id sid tid token lemma pos ajst-13403 1 1 academic academic ADJ ajst-13403 1 2 journal journal NOUN ajst-13403 1 3 of of ADP ajst-13403 1 4 science science NOUN ajst-13403 1 5 and and CCONJ ajst-13403 1 6 technology technology NOUN ajst-13403 1 7 issn issn NOUN ajst-13403 1 8 : : PUNCT ajst-13403 1 9 2771 2771 NUM ajst-13403 1 10 - - SYM ajst-13403 1 11 3032 3032 NUM ajst-13403 1 12 | | NOUN ajst-13403 1 13 vol vol NOUN ajst-13403 1 14 . . PROPN ajst-13403 2 1 7 7 NUM ajst-13403 2 2 , , PUNCT ajst-13403 2 3 no no INTJ ajst-13403 2 4 . . NOUN ajst-13403 2 5 3 3 NUM ajst-13403 2 6 , , PUNCT ajst-13403 3 1 2023 2023 NUM ajst-13403 3 2 228 228 NUM ajst-13403 3 3 simulation simulation NOUN ajst-13403 3 4 analysis analysis NOUN ajst-13403 3 5 of of ADP ajst-13403 3 6 sealing seal VERB ajst-13403 3 7 performance performance NOUN ajst-13403 3 8 of of ADP ajst-13403 3 9 rubber rubber NOUN ajst-13403 3 10 core core NOUN ajst-13403 3 11 of of ADP ajst-13403 3 12 rotary rotary ADJ ajst-13403 3 13 blowout blowout NOUN ajst-13403 3 14 preventer preventer NOUN ajst-13403 3 15 zhaoming zhaoming NOUN ajst-13403 3 16 zhou zhou PROPN ajst-13403 3 17 , , PUNCT ajst-13403 3 18 yukun yukun PROPN ajst-13403 3 19 chen chen PROPN ajst-13403 3 20 school school PROPN ajst-13403 3 21 of of ADP ajst-13403 3 22 mechanical mechanical ADJ ajst-13403 3 23 engineering engineering NOUN ajst-13403 3 24 , , PUNCT ajst-13403 3 25 southwest southwest ADJ ajst-13403 3 26 petroleum petroleum PROPN ajst-13403 3 27 university university PROPN ajst-13403 3 28 , , PUNCT ajst-13403 3 29 chengdu chengdu PROPN ajst-13403 3 30 610500 610500 NUM ajst-13403 3 31 , , PUNCT ajst-13403 3 32 china china PROPN ajst-13403 3 33 abstract abstract NOUN ajst-13403 3 34 : : PUNCT ajst-13403 3 35 the the DET ajst-13403 3 36 performance performance NOUN ajst-13403 3 37 of of ADP ajst-13403 3 38 rotary rotary ADJ ajst-13403 3 39 control control NOUN ajst-13403 3 40 head head NOUN ajst-13403 3 41 or or CCONJ ajst-13403 3 42 rotary rotary NOUN ajst-13403 3 43 blowout blowout NOUN ajst-13403 3 44 preventer preventer NOUN ajst-13403 3 45 will will AUX ajst-13403 3 46 directly directly ADV ajst-13403 3 47 affect affect VERB ajst-13403 3 48 the the DET ajst-13403 3 49 success success NOUN ajst-13403 3 50 or or CCONJ ajst-13403 3 51 failure failure NOUN ajst-13403 3 52 of of ADP ajst-13403 3 53 the the DET ajst-13403 3 54 underbalanced underbalanced ADJ ajst-13403 3 55 construction construction NOUN ajst-13403 3 56 of of ADP ajst-13403 3 57 oil oil NOUN ajst-13403 3 58 and and CCONJ ajst-13403 3 59 gas gas NOUN ajst-13403 3 60 well well ADV ajst-13403 3 61 . . PUNCT ajst-13403 4 1 once once SCONJ ajst-13403 4 2 the the DET ajst-13403 4 3 failure failure NOUN ajst-13403 4 4 occurs occur VERB ajst-13403 4 5 in in ADP ajst-13403 4 6 the the DET ajst-13403 4 7 construction construction NOUN ajst-13403 4 8 process process NOUN ajst-13403 4 9 , , PUNCT ajst-13403 4 10 there there PRON ajst-13403 4 11 may may AUX ajst-13403 4 12 be be AUX ajst-13403 4 13 blowout blowout NOUN ajst-13403 4 14 and and CCONJ ajst-13403 4 15 other other ADJ ajst-13403 4 16 big big ADJ ajst-13403 4 17 drilling drilling NOUN ajst-13403 4 18 accidents accident NOUN ajst-13403 4 19 . . PUNCT ajst-13403 5 1 based base VERB ajst-13403 5 2 on on ADP ajst-13403 5 3 the the DET ajst-13403 5 4 yeoh yeoh PROPN ajst-13403 5 5 constitutive constitutive ADJ ajst-13403 5 6 equation equation NOUN ajst-13403 5 7 , , PUNCT ajst-13403 5 8 the the DET ajst-13403 5 9 dynamic dynamic ADJ ajst-13403 5 10 sealing sealing NOUN ajst-13403 5 11 model model NOUN ajst-13403 5 12 of of ADP ajst-13403 5 13 rubber rubber NOUN ajst-13403 5 14 core core NOUN ajst-13403 5 15 is be AUX ajst-13403 5 16 established establish VERB ajst-13403 5 17 in in ADP ajst-13403 5 18 this this DET ajst-13403 5 19 paper paper NOUN ajst-13403 5 20 , , PUNCT ajst-13403 5 21 and and CCONJ ajst-13403 5 22 the the DET ajst-13403 5 23 sealing sealing NOUN ajst-13403 5 24 process process NOUN ajst-13403 5 25 of of ADP ajst-13403 5 26 rubber rubber NOUN ajst-13403 5 27 core core NOUN ajst-13403 5 28 during during ADP ajst-13403 5 29 tripping trip VERB ajst-13403 5 30 and and CCONJ ajst-13403 5 31 tripping trip VERB ajst-13403 5 32 is be AUX ajst-13403 5 33 calculated calculate VERB ajst-13403 5 34 and and CCONJ ajst-13403 5 35 analyzed analyze VERB ajst-13403 5 36 . . PUNCT ajst-13403 6 1 then then ADV ajst-13403 6 2 , , PUNCT ajst-13403 6 3 the the DET ajst-13403 6 4 effect effect NOUN ajst-13403 6 5 of of ADP ajst-13403 6 6 the the DET ajst-13403 6 7 bubble bubble NOUN ajst-13403 6 8 defect defect NOUN ajst-13403 6 9 in in ADP ajst-13403 6 10 the the DET ajst-13403 6 11 core core NOUN ajst-13403 6 12 on on ADP ajst-13403 6 13 the the DET ajst-13403 6 14 sealing sealing NOUN ajst-13403 6 15 performance performance NOUN ajst-13403 6 16 of of ADP ajst-13403 6 17 the the DET ajst-13403 6 18 core core NOUN ajst-13403 6 19 under under ADP ajst-13403 6 20 different different ADJ ajst-13403 6 21 drilling drilling NOUN ajst-13403 6 22 fluid fluid NOUN ajst-13403 6 23 pressure pressure NOUN ajst-13403 6 24 was be AUX ajst-13403 6 25 analyzed analyze VERB ajst-13403 6 26 . . PUNCT ajst-13403 7 1 finally finally ADV ajst-13403 7 2 , , PUNCT ajst-13403 7 3 the the DET ajst-13403 7 4 effect effect NOUN ajst-13403 7 5 of of ADP ajst-13403 7 6 metal metal NOUN ajst-13403 7 7 degumming degumming NOUN ajst-13403 7 8 on on ADP ajst-13403 7 9 the the DET ajst-13403 7 10 sealing sealing NOUN ajst-13403 7 11 performance performance NOUN ajst-13403 7 12 of of ADP ajst-13403 7 13 the the DET ajst-13403 7 14 core core NOUN ajst-13403 7 15 was be AUX ajst-13403 7 16 analyzed analyze VERB ajst-13403 7 17 . . PUNCT ajst-13403 8 1 the the DET ajst-13403 8 2 results result NOUN ajst-13403 8 3 showed show VERB ajst-13403 8 4 that that SCONJ ajst-13403 8 5 the the PRON ajst-13403 8 6 larger large ADJ ajst-13403 8 7 the the DET ajst-13403 8 8 initial initial ADJ ajst-13403 8 9 sealing sealing NOUN ajst-13403 8 10 pressure pressure NOUN ajst-13403 8 11 and and CCONJ ajst-13403 8 12 contact contact NOUN ajst-13403 8 13 stress stress NOUN ajst-13403 8 14 value value NOUN ajst-13403 8 15 of of ADP ajst-13403 8 16 the the DET ajst-13403 8 17 mises mises PROPN ajst-13403 8 18 core core PROPN ajst-13403 8 19 was be AUX ajst-13403 8 20 , , PUNCT ajst-13403 8 21 the the PRON ajst-13403 8 22 better well ADJ ajst-13403 8 23 the the DET ajst-13403 8 24 sealing sealing NOUN ajst-13403 8 25 effect effect NOUN ajst-13403 8 26 of of ADP ajst-13403 8 27 the the DET ajst-13403 8 28 mises mises PROPN ajst-13403 8 29 core core PROPN ajst-13403 8 30 was be AUX ajst-13403 8 31 , , PUNCT ajst-13403 8 32 while while SCONJ ajst-13403 8 33 the the PRON ajst-13403 8 34 larger large ADJ ajst-13403 8 35 the the DET ajst-13403 8 36 mises mises PROPN ajst-13403 8 37 stress stress NOUN ajst-13403 8 38 value value NOUN ajst-13403 8 39 was be AUX ajst-13403 8 40 , , PUNCT ajst-13403 8 41 the the PRON ajst-13403 8 42 more more ADV ajst-13403 8 43 likely likely ADJ ajst-13403 8 44 the the DET ajst-13403 8 45 mises mises PROPN ajst-13403 8 46 core core PROPN ajst-13403 8 47 was be AUX ajst-13403 8 48 to to PART ajst-13403 8 49 suffer suffer VERB ajst-13403 8 50 fatigue fatigue NOUN ajst-13403 8 51 failure failure NOUN ajst-13403 8 52 . . PUNCT ajst-13403 9 1 the the DET ajst-13403 9 2 drilling drilling NOUN ajst-13403 9 3 fluid fluid NOUN ajst-13403 9 4 pressure pressure NOUN ajst-13403 9 5 significantly significantly ADV ajst-13403 9 6 affects affect VERB ajst-13403 9 7 the the DET ajst-13403 9 8 maximum maximum ADJ ajst-13403 9 9 equivalent equivalent ADJ ajst-13403 9 10 stress stress NOUN ajst-13403 9 11 of of ADP ajst-13403 9 12 the the DET ajst-13403 9 13 core core NOUN ajst-13403 9 14 , , PUNCT ajst-13403 9 15 and and CCONJ ajst-13403 9 16 the the DET ajst-13403 9 17 maximum maximum ADJ ajst-13403 9 18 equivalent equivalent ADJ ajst-13403 9 19 stress stress NOUN ajst-13403 9 20 appears appear VERB ajst-13403 9 21 in in ADP ajst-13403 9 22 the the DET ajst-13403 9 23 bubble bubble NOUN ajst-13403 9 24 position position NOUN ajst-13403 9 25 inside inside ADP ajst-13403 9 26 the the DET ajst-13403 9 27 core core NOUN ajst-13403 9 28 at at ADP ajst-13403 9 29 different different ADJ ajst-13403 9 30 times time NOUN ajst-13403 9 31 and and CCONJ ajst-13403 9 32 under under ADP ajst-13403 9 33 different different ADJ ajst-13403 9 34 drilling drilling NOUN ajst-13403 9 35 fluid fluid NOUN ajst-13403 9 36 pressure pressure NOUN ajst-13403 9 37 . . PUNCT ajst-13403 10 1 the the DET ajst-13403 10 2 degumming degumming NOUN ajst-13403 10 3 position position NOUN ajst-13403 10 4 is be AUX ajst-13403 10 5 placed place VERB ajst-13403 10 6 in in ADP ajst-13403 10 7 the the DET ajst-13403 10 8 contact contact NOUN ajst-13403 10 9 position position NOUN ajst-13403 10 10 between between ADP ajst-13403 10 11 metal metal NOUN ajst-13403 10 12 and and CCONJ ajst-13403 10 13 rubber rubber NOUN ajst-13403 10 14 core core NOUN ajst-13403 10 15 . . PUNCT ajst-13403 11 1 when when SCONJ ajst-13403 11 2 the the DET ajst-13403 11 3 tensile tensile NOUN ajst-13403 11 4 stress stress NOUN ajst-13403 11 5 exceeds exceed VERB ajst-13403 11 6 the the DET ajst-13403 11 7 limit limit NOUN ajst-13403 11 8 of of ADP ajst-13403 11 9 rubber rubber NOUN ajst-13403 11 10 core core NOUN ajst-13403 11 11 material material NOUN ajst-13403 11 12 , , PUNCT ajst-13403 11 13 radial radial ADJ ajst-13403 11 14 and and CCONJ ajst-13403 11 15 circumferential circumferential ADJ ajst-13403 11 16 cracks crack NOUN ajst-13403 11 17 will will AUX ajst-13403 11 18 occur occur VERB ajst-13403 11 19 on on ADP ajst-13403 11 20 the the DET ajst-13403 11 21 upper upper ADJ ajst-13403 11 22 surface surface NOUN ajst-13403 11 23 of of ADP ajst-13403 11 24 rubber rubber NOUN ajst-13403 11 25 core core NOUN ajst-13403 11 26 . . PUNCT ajst-13403 12 1 with with ADP ajst-13403 12 2 the the DET ajst-13403 12 3 increase increase NOUN ajst-13403 12 4 of of ADP ajst-13403 12 5 drilling drilling NOUN ajst-13403 12 6 times time NOUN ajst-13403 12 7 , , PUNCT ajst-13403 12 8 rubber rubber NOUN ajst-13403 12 9 is be AUX ajst-13403 12 10 prone prone ADJ ajst-13403 12 11 to to ADP ajst-13403 12 12 fatigue fatigue NOUN ajst-13403 12 13 cracks crack NOUN ajst-13403 12 14 , , PUNCT ajst-13403 12 15 which which PRON ajst-13403 12 16 eventually eventually ADV ajst-13403 12 17 lead lead VERB ajst-13403 12 18 to to ADP ajst-13403 12 19 mutual mutual ADJ ajst-13403 12 20 tearing tearing NOUN ajst-13403 12 21 . . PUNCT ajst-13403 13 1 keywords keyword NOUN ajst-13403 13 2 : : PUNCT ajst-13403 13 3 rotate rotate VERB ajst-13403 13 4 the the DET ajst-13403 13 5 blowout blowout NOUN ajst-13403 13 6 preventer preventer NOUN ajst-13403 13 7 , , PUNCT ajst-13403 13 8 rubber rubber NOUN ajst-13403 13 9 core core NOUN ajst-13403 13 10 , , PUNCT ajst-13403 13 11 sealing seal VERB ajst-13403 13 12 performance performance NOUN ajst-13403 13 13 , , PUNCT ajst-13403 13 14 simulation simulation NOUN ajst-13403 13 15 analysis analysis NOUN ajst-13403 13 16 . . PUNCT ajst-13403 14 1 1 1 X ajst-13403 14 2 . . X ajst-13403 14 3 introduction introduction NOUN ajst-13403 14 4 rotary rotary NOUN ajst-13403 14 5 blowout blowout NOUN ajst-13403 14 6 preventer preventer NOUN ajst-13403 14 7 is be AUX ajst-13403 14 8 an an DET ajst-13403 14 9 important important ADJ ajst-13403 14 10 equipment equipment NOUN ajst-13403 14 11 in in ADP ajst-13403 14 12 wellhead wellhead NOUN ajst-13403 14 13 safety safety NOUN ajst-13403 14 14 control control NOUN ajst-13403 14 15 system system NOUN ajst-13403 14 16 , , PUNCT ajst-13403 14 17 and and CCONJ ajst-13403 14 18 it it PRON ajst-13403 14 19 is be AUX ajst-13403 14 20 also also ADV ajst-13403 14 21 one one NUM ajst-13403 14 22 of of ADP ajst-13403 14 23 the the DET ajst-13403 14 24 necessary necessary ADJ ajst-13403 14 25 equipment equipment NOUN ajst-13403 14 26 in in ADP ajst-13403 14 27 underbalanced underbalanced ADJ ajst-13403 14 28 drilling drilling NOUN ajst-13403 14 29 , , PUNCT ajst-13403 14 30 geothermal geothermal ADJ ajst-13403 14 31 drilling drilling NOUN ajst-13403 14 32 and and CCONJ ajst-13403 14 33 cbm cbm PROPN ajst-13403 14 34 drilling drilling NOUN ajst-13403 14 35 . . PUNCT ajst-13403 15 1 the the DET ajst-13403 15 2 equipment equipment NOUN ajst-13403 15 3 required require VERB ajst-13403 15 4 for for ADP ajst-13403 15 5 the the DET ajst-13403 15 6 implementation implementation NOUN ajst-13403 15 7 of of ADP ajst-13403 15 8 underbalanced underbalanced ADJ ajst-13403 15 9 drilling drilling NOUN ajst-13403 15 10 mainly mainly ADV ajst-13403 15 11 includes include VERB ajst-13403 15 12 : : PUNCT ajst-13403 15 13 wellhead wellhead NOUN ajst-13403 15 14 control control NOUN ajst-13403 15 15 equipment equipment NOUN ajst-13403 15 16 and and CCONJ ajst-13403 15 17 surface surface NOUN ajst-13403 15 18 treatment treatment NOUN ajst-13403 15 19 equipment equipment NOUN ajst-13403 15 20 . . PUNCT ajst-13403 16 1 among among ADP ajst-13403 16 2 them they PRON ajst-13403 16 3 , , PUNCT ajst-13403 16 4 the the DET ajst-13403 16 5 wellhead wellhead NOUN ajst-13403 16 6 control control NOUN ajst-13403 16 7 equipment equipment NOUN ajst-13403 16 8 mainly mainly ADV ajst-13403 16 9 refers refer VERB ajst-13403 16 10 to to ADP ajst-13403 16 11 the the DET ajst-13403 16 12 rotating rotate VERB ajst-13403 16 13 control control NOUN ajst-13403 16 14 head head NOUN ajst-13403 16 15 or or CCONJ ajst-13403 16 16 the the DET ajst-13403 16 17 rotating rotate VERB ajst-13403 16 18 blowout blowout NOUN ajst-13403 16 19 preventer preventer NOUN ajst-13403 16 20 , , PUNCT ajst-13403 16 21 which which PRON ajst-13403 16 22 together together ADV ajst-13403 16 23 with with ADP ajst-13403 16 24 the the DET ajst-13403 16 25 original original ADJ ajst-13403 16 26 ring ring NOUN ajst-13403 16 27 blowout blowout NOUN ajst-13403 16 28 preventer preventer NOUN ajst-13403 16 29 , , PUNCT ajst-13403 16 30 ram ram VERB ajst-13403 16 31 blowout blowout NOUN ajst-13403 16 32 preventer preventer NOUN ajst-13403 16 33 and and CCONJ ajst-13403 16 34 four four NUM ajst-13403 16 35 pass pass NOUN ajst-13403 16 36 constitute constitute VERB ajst-13403 16 37 the the DET ajst-13403 16 38 wellhead wellhead NOUN ajst-13403 16 39 blowout blowout NOUN ajst-13403 16 40 preventer preventer NOUN ajst-13403 16 41 group group NOUN ajst-13403 16 42 , , PUNCT ajst-13403 16 43 whose whose DET ajst-13403 16 44 function function NOUN ajst-13403 16 45 is be AUX ajst-13403 16 46 to to PART ajst-13403 16 47 implement implement VERB ajst-13403 16 48 pressure pressure NOUN ajst-13403 16 49 control control NOUN ajst-13403 16 50 for for ADP ajst-13403 16 51 oil oil NOUN ajst-13403 16 52 and and CCONJ ajst-13403 16 53 gas gas NOUN ajst-13403 16 54 wells well NOUN ajst-13403 16 55 , , PUNCT ajst-13403 16 56 prevent prevent VERB ajst-13403 16 57 and and CCONJ ajst-13403 16 58 monitor monitor VERB ajst-13403 16 59 accidents accident NOUN ajst-13403 16 60 , , PUNCT ajst-13403 16 61 and and CCONJ ajst-13403 16 62 ensure ensure VERB ajst-13403 16 63 the the DET ajst-13403 16 64 safety safety NOUN ajst-13403 16 65 of of ADP ajst-13403 16 66 drilling drilling NOUN ajst-13403 16 67 personnel personnel NOUN ajst-13403 16 68 , , PUNCT ajst-13403 16 69 drilling drilling NOUN ajst-13403 16 70 equipment equipment NOUN ajst-13403 16 71 and and CCONJ ajst-13403 16 72 oil oil NOUN ajst-13403 16 73 and and CCONJ ajst-13403 16 74 gas gas NOUN ajst-13403 16 75 wells well NOUN ajst-13403 16 76 [ [ X ajst-13403 16 77 1 1 NUM ajst-13403 16 78 ] ] PUNCT ajst-13403 16 79 . . PUNCT ajst-13403 17 1 as as ADP ajst-13403 17 2 the the DET ajst-13403 17 3 heart heart NOUN ajst-13403 17 4 of of ADP ajst-13403 17 5 the the DET ajst-13403 17 6 rotary rotary ADJ ajst-13403 17 7 blowout blowout NOUN ajst-13403 17 8 preventer preventer NOUN ajst-13403 17 9 , , PUNCT ajst-13403 17 10 the the DET ajst-13403 17 11 rubber rubber NOUN ajst-13403 17 12 core core NOUN ajst-13403 17 13 is be AUX ajst-13403 17 14 the the DET ajst-13403 17 15 guarantee guarantee NOUN ajst-13403 17 16 of of ADP ajst-13403 17 17 its its PRON ajst-13403 17 18 normal normal ADJ ajst-13403 17 19 operation operation NOUN ajst-13403 17 20 , , PUNCT ajst-13403 17 21 which which PRON ajst-13403 17 22 is be AUX ajst-13403 17 23 particularly particularly ADV ajst-13403 17 24 important important ADJ ajst-13403 17 25 in in ADP ajst-13403 17 26 the the DET ajst-13403 17 27 process process NOUN ajst-13403 17 28 of of ADP ajst-13403 17 29 development development NOUN ajst-13403 17 30 . . PUNCT ajst-13403 18 1 the the DET ajst-13403 18 2 performance performance NOUN ajst-13403 18 3 of of ADP ajst-13403 18 4 rotary rotary ADJ ajst-13403 18 5 control control NOUN ajst-13403 18 6 head head NOUN ajst-13403 18 7 or or CCONJ ajst-13403 18 8 rotary rotary NOUN ajst-13403 18 9 blowout blowout NOUN ajst-13403 18 10 preventer preventer NOUN ajst-13403 18 11 will will AUX ajst-13403 18 12 directly directly ADV ajst-13403 18 13 affect affect VERB ajst-13403 18 14 the the DET ajst-13403 18 15 success success NOUN ajst-13403 18 16 or or CCONJ ajst-13403 18 17 failure failure NOUN ajst-13403 18 18 of of ADP ajst-13403 18 19 the the DET ajst-13403 18 20 underbalanced underbalanced ADJ ajst-13403 18 21 construction construction NOUN ajst-13403 18 22 of of ADP ajst-13403 18 23 oil oil NOUN ajst-13403 18 24 and and CCONJ ajst-13403 18 25 gas gas NOUN ajst-13403 18 26 well well ADV ajst-13403 18 27 . . PUNCT ajst-13403 19 1 once once SCONJ ajst-13403 19 2 the the DET ajst-13403 19 3 failure failure NOUN ajst-13403 19 4 occurs occur VERB ajst-13403 19 5 in in ADP ajst-13403 19 6 the the DET ajst-13403 19 7 construction construction NOUN ajst-13403 19 8 process process NOUN ajst-13403 19 9 , , PUNCT ajst-13403 19 10 there there PRON ajst-13403 19 11 may may AUX ajst-13403 19 12 be be AUX ajst-13403 19 13 blowout blowout NOUN ajst-13403 19 14 and and CCONJ ajst-13403 19 15 other other ADJ ajst-13403 19 16 big big ADJ ajst-13403 19 17 drilling drilling NOUN ajst-13403 19 18 accidents accident NOUN ajst-13403 19 19 . . PUNCT ajst-13403 20 1 due due ADP ajst-13403 20 2 to to ADP ajst-13403 20 3 the the DET ajst-13403 20 4 working working NOUN ajst-13403 20 5 conditions condition NOUN ajst-13403 20 6 , , PUNCT ajst-13403 20 7 the the DET ajst-13403 20 8 rubber rubber NOUN ajst-13403 20 9 core core NOUN ajst-13403 20 10 is be AUX ajst-13403 20 11 prone prone ADJ ajst-13403 20 12 to to ADP ajst-13403 20 13 failure failure NOUN ajst-13403 20 14 in in ADP ajst-13403 20 15 the the DET ajst-13403 20 16 form form NOUN ajst-13403 20 17 of of ADP ajst-13403 20 18 root root NOUN ajst-13403 20 19 damage damage NOUN ajst-13403 20 20 , , PUNCT ajst-13403 20 21 wear wear VERB ajst-13403 20 22 in in ADP ajst-13403 20 23 the the DET ajst-13403 20 24 contact contact NOUN ajst-13403 20 25 area area NOUN ajst-13403 20 26 with with ADP ajst-13403 20 27 the the DET ajst-13403 20 28 drill drill NOUN ajst-13403 20 29 tool tool NOUN ajst-13403 20 30 , , PUNCT ajst-13403 20 31 slip slip VERB ajst-13403 20 32 damage damage NOUN ajst-13403 20 33 , , PUNCT ajst-13403 20 34 excessive excessive ADJ ajst-13403 20 35 deformation deformation NOUN ajst-13403 20 36 , , PUNCT ajst-13403 20 37 thermal thermal ADJ ajst-13403 20 38 burn burn NOUN ajst-13403 20 39 , , PUNCT ajst-13403 20 40 etc etc X ajst-13403 20 41 . . X ajst-13403 20 42 , , PUNCT ajst-13403 20 43 which which PRON ajst-13403 20 44 becomes become VERB ajst-13403 20 45 the the DET ajst-13403 20 46 main main ADJ ajst-13403 20 47 factor factor NOUN ajst-13403 20 48 affecting affect VERB ajst-13403 20 49 the the DET ajst-13403 20 50 working work VERB ajst-13403 20 51 performance performance NOUN ajst-13403 20 52 of of ADP ajst-13403 20 53 the the DET ajst-13403 20 54 rotary rotary ADJ ajst-13403 20 55 blowout blowout NOUN ajst-13403 20 56 preventer preventer NOUN ajst-13403 20 57 [ [ X ajst-13403 20 58 2 2 NUM ajst-13403 20 59 - - SYM ajst-13403 20 60 5 5 NUM ajst-13403 20 61 ] ] PUNCT ajst-13403 20 62 . . PUNCT ajst-13403 21 1 qiu qiu PROPN ajst-13403 21 2 et et PROPN ajst-13403 21 3 al al PROPN ajst-13403 21 4 . . PUNCT ajst-13403 22 1 [ [ X ajst-13403 22 2 6 6 NUM ajst-13403 22 3 ] ] PUNCT ajst-13403 22 4 summarized summarize VERB ajst-13403 22 5 the the DET ajst-13403 22 6 research research NOUN ajst-13403 22 7 status status NOUN ajst-13403 22 8 of of ADP ajst-13403 22 9 rubber rubber NOUN ajst-13403 22 10 fatigue fatigue NOUN ajst-13403 22 11 from from ADP ajst-13403 22 12 three three NUM ajst-13403 22 13 aspects aspect NOUN ajst-13403 22 14 : : PUNCT ajst-13403 22 15 research research NOUN ajst-13403 22 16 methods method NOUN ajst-13403 22 17 of of ADP ajst-13403 22 18 rubber rubber NOUN ajst-13403 22 19 fatigue fatigue NOUN ajst-13403 22 20 , , PUNCT ajst-13403 22 21 factors factor NOUN ajst-13403 22 22 affecting affect VERB ajst-13403 22 23 fatigue fatigue NOUN ajst-13403 22 24 life life NOUN ajst-13403 22 25 and and CCONJ ajst-13403 22 26 crack crack VERB ajst-13403 22 27 section section NOUN ajst-13403 22 28 . . PUNCT ajst-13403 23 1 zhang zhang PROPN ajst-13403 23 2 et et PROPN ajst-13403 23 3 al al PROPN ajst-13403 23 4 . . PUNCT ajst-13403 24 1 [ [ X ajst-13403 24 2 7 7 X ajst-13403 24 3 ] ] PUNCT ajst-13403 24 4 analyzed analyze VERB ajst-13403 24 5 the the DET ajst-13403 24 6 effects effect NOUN ajst-13403 24 7 of of ADP ajst-13403 24 8 thermal thermal ADJ ajst-13403 24 9 aging aging NOUN ajst-13403 24 10 and and CCONJ ajst-13403 24 11 fatigue fatigue NOUN ajst-13403 24 12 damage damage NOUN ajst-13403 24 13 on on ADP ajst-13403 24 14 the the DET ajst-13403 24 15 fatigue fatigue NOUN ajst-13403 24 16 life life NOUN ajst-13403 24 17 of of ADP ajst-13403 24 18 rubber rubber NOUN ajst-13403 24 19 under under ADP ajst-13403 24 20 the the DET ajst-13403 24 21 influence influence NOUN ajst-13403 24 22 of of ADP ajst-13403 24 23 temperature temperature NOUN ajst-13403 24 24 , , PUNCT ajst-13403 24 25 and and CCONJ ajst-13403 24 26 the the DET ajst-13403 24 27 proposed propose VERB ajst-13403 24 28 prediction prediction NOUN ajst-13403 24 29 model model NOUN ajst-13403 24 30 could could AUX ajst-13403 24 31 predict predict VERB ajst-13403 24 32 the the DET ajst-13403 24 33 fatigue fatigue NOUN ajst-13403 24 34 life life NOUN ajst-13403 24 35 of of ADP ajst-13403 24 36 such such ADJ ajst-13403 24 37 rubber rubber NOUN ajst-13403 24 38 samples sample NOUN ajst-13403 24 39 under under ADP ajst-13403 24 40 different different ADJ ajst-13403 24 41 temperatures temperature NOUN ajst-13403 24 42 . . PUNCT ajst-13403 25 1 wu wu PROPN ajst-13403 25 2 et et PROPN ajst-13403 25 3 al al PROPN ajst-13403 25 4 . . PUNCT ajst-13403 26 1 [ [ X ajst-13403 26 2 8 8 NUM ajst-13403 26 3 ] ] PUNCT ajst-13403 26 4 adopted adopt VERB ajst-13403 26 5 finite finite ADJ ajst-13403 26 6 element element NOUN ajst-13403 26 7 simulation simulation NOUN ajst-13403 26 8 combined combine VERB ajst-13403 26 9 with with ADP ajst-13403 26 10 experiments experiment NOUN ajst-13403 26 11 to to PART ajst-13403 26 12 optimize optimize VERB ajst-13403 26 13 the the DET ajst-13403 26 14 structure structure NOUN ajst-13403 26 15 of of ADP ajst-13403 26 16 the the DET ajst-13403 26 17 iron iron NOUN ajst-13403 26 18 core core NOUN ajst-13403 26 19 thickness thickness NOUN ajst-13403 26 20 , , PUNCT ajst-13403 26 21 fillet fillet PROPN ajst-13403 26 22 radius radius NOUN ajst-13403 26 23 and and CCONJ ajst-13403 26 24 inner inner ADJ ajst-13403 26 25 diameter diameter NOUN ajst-13403 26 26 of of ADP ajst-13403 26 27 the the DET ajst-13403 26 28 rubber rubber NOUN ajst-13403 26 29 core core NOUN ajst-13403 26 30 of of ADP ajst-13403 26 31 the the DET ajst-13403 26 32 rbop rbop NOUN ajst-13403 26 33 , , PUNCT ajst-13403 26 34 which which PRON ajst-13403 26 35 improved improve VERB ajst-13403 26 36 the the DET ajst-13403 26 37 performance performance NOUN ajst-13403 26 38 and and CCONJ ajst-13403 26 39 life life NOUN ajst-13403 26 40 of of ADP ajst-13403 26 41 the the DET ajst-13403 26 42 rubber rubber NOUN ajst-13403 26 43 core core NOUN ajst-13403 26 44 of of ADP ajst-13403 26 45 the the DET ajst-13403 26 46 rbop rbop NOUN ajst-13403 26 47 . . PUNCT ajst-13403 27 1 in in ADP ajst-13403 27 2 addition addition NOUN ajst-13403 27 3 , , PUNCT ajst-13403 27 4 many many ADJ ajst-13403 27 5 petroleum petroleum NOUN ajst-13403 27 6 scholars scholar NOUN ajst-13403 27 7 have have AUX ajst-13403 27 8 established establish VERB ajst-13403 27 9 a a DET ajst-13403 27 10 finite finite ADJ ajst-13403 27 11 element element NOUN ajst-13403 27 12 model model NOUN ajst-13403 27 13 of of ADP ajst-13403 27 14 rubber rubber NOUN ajst-13403 27 15 core core NOUN ajst-13403 27 16 seal seal NOUN ajst-13403 27 17 for for ADP ajst-13403 27 18 rotary rotary ADJ ajst-13403 27 19 blowout blowout NOUN ajst-13403 27 20 preventer preventer NOUN ajst-13403 27 21 , , PUNCT ajst-13403 27 22 and and CCONJ ajst-13403 27 23 conducted conduct VERB ajst-13403 27 24 research research NOUN ajst-13403 27 25 and and CCONJ ajst-13403 27 26 analysis analysis NOUN ajst-13403 27 27 on on ADP ajst-13403 27 28 fatigue fatigue NOUN ajst-13403 27 29 failure failure NOUN ajst-13403 27 30 of of ADP ajst-13403 27 31 rubber rubber NOUN ajst-13403 27 32 core core NOUN ajst-13403 28 1 [ [ X ajst-13403 28 2 9 9 NUM ajst-13403 28 3 - - SYM ajst-13403 28 4 13 13 NUM ajst-13403 28 5 ] ] PUNCT ajst-13403 28 6 . . PUNCT ajst-13403 29 1 many many ADJ ajst-13403 29 2 scholars scholar NOUN ajst-13403 29 3 have have AUX ajst-13403 29 4 analyzed analyze VERB ajst-13403 29 5 the the DET ajst-13403 29 6 influence influence NOUN ajst-13403 29 7 of of ADP ajst-13403 29 8 core core ADJ ajst-13403 29 9 performance performance NOUN ajst-13403 29 10 on on ADP ajst-13403 29 11 rotary rotary ADJ ajst-13403 29 12 blowout blowout NOUN ajst-13403 29 13 preventer preventer NOUN ajst-13403 29 14 mainly mainly ADV ajst-13403 29 15 in in ADP ajst-13403 29 16 core core NOUN ajst-13403 29 17 structure structure NOUN ajst-13403 29 18 , , PUNCT ajst-13403 29 19 drill drill NOUN ajst-13403 29 20 pipe pipe NOUN ajst-13403 29 21 joint joint ADJ ajst-13403 29 22 structure structure NOUN ajst-13403 29 23 , , PUNCT ajst-13403 29 24 wellhead wellhead NOUN ajst-13403 29 25 pressure pressure NOUN ajst-13403 29 26 , , PUNCT ajst-13403 29 27 trip trip NOUN ajst-13403 29 28 speed speed NOUN ajst-13403 29 29 and and CCONJ ajst-13403 29 30 core core NOUN ajst-13403 29 31 material material NOUN ajst-13403 29 32 hardness hardness NOUN ajst-13403 29 33 . . PUNCT ajst-13403 30 1 however however ADV ajst-13403 30 2 , , PUNCT ajst-13403 30 3 the the DET ajst-13403 30 4 effects effect NOUN ajst-13403 30 5 of of ADP ajst-13403 30 6 different different ADJ ajst-13403 30 7 drilling drilling NOUN ajst-13403 30 8 fluid fluid NOUN ajst-13403 30 9 pressures pressure NOUN ajst-13403 30 10 and and CCONJ ajst-13403 30 11 defects defect NOUN ajst-13403 30 12 in in ADP ajst-13403 30 13 the the DET ajst-13403 30 14 production production NOUN ajst-13403 30 15 and and CCONJ ajst-13403 30 16 operation operation NOUN ajst-13403 30 17 of of ADP ajst-13403 30 18 the the DET ajst-13403 30 19 core core NOUN ajst-13403 30 20 on on ADP ajst-13403 30 21 the the DET ajst-13403 30 22 performance performance NOUN ajst-13403 30 23 and and CCONJ ajst-13403 30 24 life life NOUN ajst-13403 30 25 of of ADP ajst-13403 30 26 the the DET ajst-13403 30 27 core core NOUN ajst-13403 30 28 were be AUX ajst-13403 30 29 not not PART ajst-13403 30 30 considered consider VERB ajst-13403 30 31 . . PUNCT ajst-13403 31 1 in in ADP ajst-13403 31 2 this this DET ajst-13403 31 3 paper paper NOUN ajst-13403 31 4 , , PUNCT ajst-13403 31 5 the the DET ajst-13403 31 6 mechanical mechanical ADJ ajst-13403 31 7 analysis analysis NOUN ajst-13403 31 8 of of ADP ajst-13403 31 9 the the DET ajst-13403 31 10 drilling drilling NOUN ajst-13403 31 11 conditions condition NOUN ajst-13403 31 12 of of ADP ajst-13403 31 13 intact intact ADJ ajst-13403 31 14 core core NOUN ajst-13403 31 15 and and CCONJ ajst-13403 31 16 defective defective ADJ ajst-13403 31 17 core core NOUN ajst-13403 31 18 is be AUX ajst-13403 31 19 carried carry VERB ajst-13403 31 20 out out ADP ajst-13403 31 21 . . PUNCT ajst-13403 32 1 the the DET ajst-13403 32 2 effects effect NOUN ajst-13403 32 3 of of ADP ajst-13403 32 4 core core ADJ ajst-13403 32 5 defects defect NOUN ajst-13403 32 6 on on ADP ajst-13403 32 7 different different ADJ ajst-13403 32 8 drilling drilling NOUN ajst-13403 32 9 fluid fluid NOUN ajst-13403 32 10 pressures pressure NOUN ajst-13403 32 11 were be AUX ajst-13403 32 12 compared compare VERB ajst-13403 32 13 and and CCONJ ajst-13403 32 14 analyzed analyze VERB ajst-13403 32 15 . . PUNCT ajst-13403 33 1 the the DET ajst-13403 33 2 effects effect NOUN ajst-13403 33 3 of of ADP ajst-13403 33 4 various various ADJ ajst-13403 33 5 types type NOUN ajst-13403 33 6 of of ADP ajst-13403 33 7 defects defect NOUN ajst-13403 33 8 on on ADP ajst-13403 33 9 the the DET ajst-13403 33 10 stress stress NOUN ajst-13403 33 11 of of ADP ajst-13403 33 12 the the DET ajst-13403 33 13 sealing seal VERB ajst-13403 33 14 surface surface NOUN ajst-13403 33 15 of of ADP ajst-13403 33 16 the the DET ajst-13403 33 17 rubber rubber NOUN ajst-13403 33 18 core core NOUN ajst-13403 33 19 were be AUX ajst-13403 33 20 summarized summarize VERB ajst-13403 33 21 in in ADP ajst-13403 33 22 order order NOUN ajst-13403 33 23 to to PART ajst-13403 33 24 provide provide VERB ajst-13403 33 25 reference reference NOUN ajst-13403 33 26 for for ADP ajst-13403 33 27 the the DET ajst-13403 33 28 defect defect NOUN ajst-13403 33 29 detection detection NOUN ajst-13403 33 30 , , PUNCT ajst-13403 33 31 sealing seal VERB ajst-13403 33 32 performance performance NOUN ajst-13403 33 33 and and CCONJ ajst-13403 33 34 service service NOUN ajst-13403 33 35 life life NOUN ajst-13403 33 36 of of ADP ajst-13403 33 37 the the DET ajst-13403 33 38 rubber rubber NOUN ajst-13403 33 39 core core NOUN ajst-13403 33 40 . . PUNCT ajst-13403 34 1 2 2 X ajst-13403 34 2 . . X ajst-13403 34 3 finite finite PROPN ajst-13403 34 4 element element PROPN ajst-13403 34 5 model model NOUN ajst-13403 34 6 of of ADP ajst-13403 34 7 rubber rubber NOUN ajst-13403 34 8 core core NOUN ajst-13403 34 9 of of ADP ajst-13403 34 10 rotary rotary ADJ ajst-13403 34 11 blowout blowout NOUN ajst-13403 34 12 preventer preventer NOUN ajst-13403 34 13 2.1 2.1 NUM ajst-13403 34 14 . . PUNCT ajst-13403 35 1 yeoh yeoh PROPN ajst-13403 35 2 model model NOUN ajst-13403 35 3 many many ADJ ajst-13403 35 4 scholars scholar NOUN ajst-13403 35 5 have have AUX ajst-13403 35 6 conducted conduct VERB ajst-13403 35 7 in in ADP ajst-13403 35 8 - - PUNCT ajst-13403 35 9 depth depth NOUN ajst-13403 35 10 research research NOUN ajst-13403 35 11 on on ADP ajst-13403 35 12 rubber rubber NOUN ajst-13403 35 13 material material NOUN ajst-13403 35 14 constitutive constitutive ADJ ajst-13403 35 15 model model NOUN ajst-13403 35 16 , , PUNCT ajst-13403 35 17 which which PRON ajst-13403 35 18 is be AUX ajst-13403 35 19 mainly mainly ADV ajst-13403 35 20 divided divide VERB ajst-13403 35 21 into into ADP ajst-13403 35 22 phenomenological phenomenological ADJ ajst-13403 35 23 model model NOUN ajst-13403 35 24 based base VERB ajst-13403 35 25 on on ADP ajst-13403 35 26 strain strain ADJ ajst-13403 35 27 energy energy NOUN ajst-13403 35 28 function function NOUN ajst-13403 35 29 and and CCONJ ajst-13403 35 30 statistical statistical ADJ ajst-13403 35 31 model model NOUN ajst-13403 35 32 based base VERB ajst-13403 35 33 on on ADP ajst-13403 35 34 molecular molecular ADJ ajst-13403 35 35 chain chain NOUN ajst-13403 35 36 network network NOUN ajst-13403 35 37 [ [ X ajst-13403 35 38 14 14 NUM ajst-13403 35 39 ] ] PUNCT ajst-13403 35 40 . . PUNCT ajst-13403 36 1 on on ADP ajst-13403 36 2 this this DET ajst-13403 36 3 basis basis NOUN ajst-13403 36 4 , , PUNCT ajst-13403 36 5 the the DET ajst-13403 36 6 arruda arruda PROPN ajst-13403 36 7 - - PUNCT ajst-13403 36 8 boyce boyce PROPN ajst-13403 36 9 , , PUNCT ajst-13403 36 10 mooney mooney PROPN ajst-13403 36 11 - - PUNCT ajst-13403 36 12 rivlin rivlin PROPN ajst-13403 36 13 , , PUNCT ajst-13403 36 14 ogden ogden PROPN ajst-13403 36 15 and and CCONJ ajst-13403 36 16 yeoh yeoh PROPN ajst-13403 36 17 models model NOUN ajst-13403 36 18 , , PUNCT ajst-13403 36 19 which which PRON ajst-13403 36 20 are be AUX ajst-13403 36 21 widely widely ADV ajst-13403 36 22 used use VERB ajst-13403 36 23 today today NOUN ajst-13403 36 24 , , PUNCT ajst-13403 36 25 were be AUX ajst-13403 36 26 formed form VERB ajst-13403 36 27 by by ADP ajst-13403 36 28 simplifying simplify VERB ajst-13403 36 29 the the DET ajst-13403 36 30 model model NOUN ajst-13403 36 31 parameters parameter NOUN ajst-13403 36 32 [ [ X ajst-13403 36 33 15 15 NUM ajst-13403 36 34 ] ] PUNCT ajst-13403 36 35 . . PUNCT ajst-13403 37 1 the the DET ajst-13403 37 2 arruda arruda PROPN ajst-13403 37 3 - - PUNCT ajst-13403 37 4 boyce boyce PROPN ajst-13403 37 5 model model NOUN ajst-13403 37 6 has have VERB ajst-13403 37 7 some some DET ajst-13403 37 8 limitations limitation NOUN ajst-13403 37 9 in in ADP ajst-13403 37 10 describing describe VERB ajst-13403 37 11 the the DET ajst-13403 37 12 behavior behavior NOUN ajst-13403 37 13 of of ADP ajst-13403 37 14 complex complex ADJ ajst-13403 37 15 rubber rubber NOUN ajst-13403 37 16 materials material NOUN ajst-13403 37 17 . . PUNCT ajst-13403 38 1 the the DET ajst-13403 38 2 mooney mooney PROPN ajst-13403 38 3 - - PUNCT ajst-13403 38 4 rivlin rivlin PROPN ajst-13403 38 5 and and CCONJ ajst-13403 38 6 ogden ogden PROPN ajst-13403 38 7 models model NOUN ajst-13403 38 8 are be AUX ajst-13403 38 9 suitable suitable ADJ ajst-13403 38 10 for for ADP ajst-13403 38 11 small small ADJ ajst-13403 38 12 and and CCONJ ajst-13403 38 13 medium medium ADJ ajst-13403 38 14 deformation deformation NOUN ajst-13403 38 15 of of ADP ajst-13403 38 16 229 229 NUM ajst-13403 38 17 rubber rubber NOUN ajst-13403 38 18 , , PUNCT ajst-13403 38 19 but but CCONJ ajst-13403 38 20 can can AUX ajst-13403 38 21 not not PART ajst-13403 38 22 accurately accurately ADV ajst-13403 38 23 simulate simulate VERB ajst-13403 38 24 carbon carbon NOUN ajst-13403 38 25 black black ADJ ajst-13403 38 26 nbr nbr ADJ ajst-13403 38 27 rubber rubber NOUN ajst-13403 38 28 . . PUNCT ajst-13403 39 1 yeoh yeoh PROPN ajst-13403 39 2 model model NOUN ajst-13403 39 3 is be AUX ajst-13403 39 4 suitable suitable ADJ ajst-13403 39 5 for for ADP ajst-13403 39 6 simulating simulate VERB ajst-13403 39 7 large large ADJ ajst-13403 39 8 deformation deformation NOUN ajst-13403 39 9 behavior behavior NOUN ajst-13403 39 10 of of ADP ajst-13403 39 11 carbon carbon NOUN ajst-13403 39 12 black black NOUN ajst-13403 39 13 - - PUNCT ajst-13403 39 14 filled fill VERB ajst-13403 39 15 nbr nbr NOUN ajst-13403 39 16 , , PUNCT ajst-13403 39 17 and and CCONJ ajst-13403 39 18 has have VERB ajst-13403 39 19 the the DET ajst-13403 39 20 ability ability NOUN ajst-13403 39 21 to to PART ajst-13403 39 22 describe describe VERB ajst-13403 39 23 the the DET ajst-13403 39 24 mechanical mechanical ADJ ajst-13403 39 25 behavior behavior NOUN ajst-13403 39 26 of of ADP ajst-13403 39 27 other other ADJ ajst-13403 39 28 deformation deformation NOUN ajst-13403 39 29 with with ADP ajst-13403 39 30 simple simple ADJ ajst-13403 39 31 uniaxial uniaxial ADJ ajst-13403 39 32 tensile tensile NOUN ajst-13403 39 33 test test NOUN ajst-13403 39 34 data datum NOUN ajst-13403 39 35 . . PUNCT ajst-13403 40 1 rubber rubber PROPN ajst-13403 40 2 is be AUX ajst-13403 40 3 assumed assume VERB ajst-13403 40 4 to to PART ajst-13403 40 5 be be AUX ajst-13403 40 6 isotropic isotropic ADJ ajst-13403 40 7 material material NOUN ajst-13403 40 8 in in ADP ajst-13403 40 9 the the DET ajst-13403 40 10 undeformed undeformed ADJ ajst-13403 40 11 state state NOUN ajst-13403 40 12 . . PUNCT ajst-13403 41 1 the the DET ajst-13403 41 2 properties property NOUN ajst-13403 41 3 of of ADP ajst-13403 41 4 rubber rubber NOUN ajst-13403 41 5 are be AUX ajst-13403 41 6 described describe VERB ajst-13403 41 7 by by ADP ajst-13403 41 8 the the DET ajst-13403 41 9 strain strain NOUN ajst-13403 41 10 energy energy NOUN ajst-13403 41 11 density density NOUN ajst-13403 41 12 per per ADP ajst-13403 41 13 unit unit NOUN ajst-13403 41 14 volume volume NOUN ajst-13403 41 15 . . PUNCT ajst-13403 42 1 π‘ˆ π‘ˆ PROPN ajst-13403 42 2 𝐢 𝐢 PROPN ajst-13403 42 3 𝐼̅ 𝐼̅ NOUN ajst-13403 42 4 3 3 NUM ajst-13403 42 5 𝐼 𝐼 ADP ajst-13403 42 6 Μ… Μ… NOUN ajst-13403 42 7 3 3 NUM ajst-13403 42 8 𝐽 𝐽 NOUN ajst-13403 42 9 1 1 NUM ajst-13403 42 10 ( ( PUNCT ajst-13403 42 11 1 1 NUM ajst-13403 42 12 ) ) PUNCT ajst-13403 42 13 where where SCONJ ajst-13403 42 14 n n PRON ajst-13403 42 15 is be AUX ajst-13403 42 16 the the DET ajst-13403 42 17 polynomial polynomial ADJ ajst-13403 42 18 order order NOUN ajst-13403 42 19 , , PUNCT ajst-13403 42 20 di di NOUN ajst-13403 42 21 parameter parameter NOUN ajst-13403 42 22 represents represent VERB ajst-13403 42 23 the the DET ajst-13403 42 24 compression compression NOUN ajst-13403 42 25 property property NOUN ajst-13403 42 26 of of ADP ajst-13403 42 27 the the DET ajst-13403 42 28 material material NOUN ajst-13403 42 29 , , PUNCT ajst-13403 42 30 and and CCONJ ajst-13403 42 31 cij cij PROPN ajst-13403 42 32 is be AUX ajst-13403 42 33 the the DET ajst-13403 42 34 parameter parameter NOUN ajst-13403 42 35 describing describe VERB ajst-13403 42 36 the the DET ajst-13403 42 37 deformation deformation NOUN ajst-13403 42 38 of of ADP ajst-13403 42 39 the the DET ajst-13403 42 40 material material NOUN ajst-13403 42 41 . . PUNCT ajst-13403 43 1 by by ADP ajst-13403 43 2 setting set VERB ajst-13403 43 3 the the DET ajst-13403 43 4 parameters parameter NOUN ajst-13403 43 5 cij cij PROPN ajst-13403 43 6 = = PROPN ajst-13403 43 7 0 0 PROPN ajst-13403 43 8 , , PUNCT ajst-13403 43 9 jβ‰ 0 jβ‰ 0 PROPN ajst-13403 43 10 , , PUNCT ajst-13403 43 11 we we PRON ajst-13403 43 12 get get VERB ajst-13403 43 13 the the DET ajst-13403 43 14 special special ADJ ajst-13403 43 15 form form NOUN ajst-13403 43 16 of of ADP ajst-13403 43 17 the the DET ajst-13403 43 18 polynomial polynomial ADJ ajst-13403 43 19 model model NOUN ajst-13403 43 20 , , PUNCT ajst-13403 43 21 and and CCONJ ajst-13403 43 22 when when SCONJ ajst-13403 43 23 n=3 n=3 VERB ajst-13403 43 24 , , PUNCT ajst-13403 43 25 we we PRON ajst-13403 43 26 get get VERB ajst-13403 43 27 the the DET ajst-13403 43 28 yeoh yeoh PROPN ajst-13403 43 29 form form NOUN ajst-13403 43 30 polynomial polynomial ADJ ajst-13403 43 31 : : PUNCT ajst-13403 44 1 π‘ˆ π‘ˆ PROPN ajst-13403 44 2 𝐢 𝐢 PROPN ajst-13403 44 3 𝑙 𝑙 PRON ajst-13403 44 4 Μ… Μ… NOUN ajst-13403 44 5 3 3 NUM ajst-13403 44 6 𝐽 𝐽 NOUN ajst-13403 44 7 1 1 NUM ajst-13403 44 8 ( ( PUNCT ajst-13403 44 9 2 2 NUM ajst-13403 44 10 ) ) PUNCT ajst-13403 44 11 as as ADP ajst-13403 44 12 the the DET ajst-13403 44 13 yeoh yeoh PROPN ajst-13403 44 14 model model PROPN ajst-13403 44 15 c10 c10 PROPN ajst-13403 44 16 , , PUNCT ajst-13403 44 17 c20 c20 PROPN ajst-13403 44 18 and and CCONJ ajst-13403 44 19 c30 c30 PROPN ajst-13403 44 20 coefficient coefficient NOUN ajst-13403 44 21 magnitude magnitude NOUN ajst-13403 44 22 relationships relationship NOUN ajst-13403 44 23 can can AUX ajst-13403 44 24 better well ADV ajst-13403 44 25 describe describe VERB ajst-13403 44 26 the the DET ajst-13403 44 27 rubber rubber NOUN ajst-13403 44 28 stress stress NOUN ajst-13403 44 29 - - PUNCT ajst-13403 44 30 strain strain NOUN ajst-13403 44 31 curve curve NOUN ajst-13403 44 32 , , PUNCT ajst-13403 44 33 when when SCONJ ajst-13403 44 34 the the DET ajst-13403 44 35 rubber rubber NOUN ajst-13403 44 36 is be AUX ajst-13403 44 37 under under ADP ajst-13403 44 38 small small ADJ ajst-13403 44 39 deformation deformation NOUN ajst-13403 44 40 , , PUNCT ajst-13403 44 41 c10 c10 PROPN ajst-13403 44 42 represents represent VERB ajst-13403 44 43 the the DET ajst-13403 44 44 initial initial ADJ ajst-13403 44 45 shear shear NOUN ajst-13403 44 46 modulus modulus NOUN ajst-13403 44 47 , , PUNCT ajst-13403 44 48 and and CCONJ ajst-13403 44 49 when when SCONJ ajst-13403 44 50 the the DET ajst-13403 44 51 rubber rubber NOUN ajst-13403 44 52 is be AUX ajst-13403 44 53 under under ADP ajst-13403 44 54 medium medium ADJ ajst-13403 44 55 deformation deformation NOUN ajst-13403 44 56 , , PUNCT ajst-13403 44 57 the the DET ajst-13403 44 58 rubber rubber NOUN ajst-13403 44 59 softens soften VERB ajst-13403 44 60 due due ADP ajst-13403 44 61 to to ADP ajst-13403 44 62 the the DET ajst-13403 44 63 c20 c20 NOUN ajst-13403 44 64 coefficient coefficient PROPN ajst-13403 44 65 relationship relationship NOUN ajst-13403 44 66 . . PUNCT ajst-13403 45 1 when when SCONJ ajst-13403 45 2 the the DET ajst-13403 45 3 rubber rubber NOUN ajst-13403 45 4 has have VERB ajst-13403 45 5 a a DET ajst-13403 45 6 large large ADJ ajst-13403 45 7 deformation deformation NOUN ajst-13403 45 8 , , PUNCT ajst-13403 45 9 the the DET ajst-13403 45 10 rubber rubber NOUN ajst-13403 45 11 hardens harden VERB ajst-13403 45 12 due due ADP ajst-13403 45 13 to to ADP ajst-13403 45 14 the the DET ajst-13403 45 15 c30 c30 PROPN ajst-13403 45 16 coefficient coefficient NOUN ajst-13403 45 17 . . PUNCT ajst-13403 46 1 the the DET ajst-13403 46 2 main main ADJ ajst-13403 46 3 feature feature NOUN ajst-13403 46 4 of of ADP ajst-13403 46 5 yeoh yeoh PROPN ajst-13403 46 6 model model NOUN ajst-13403 46 7 in in ADP ajst-13403 46 8 ansys ansys PROPN ajst-13403 46 9 software software PROPN ajst-13403 46 10 is be AUX ajst-13403 46 11 that that SCONJ ajst-13403 46 12 the the DET ajst-13403 46 13 input input NOUN ajst-13403 46 14 parameters parameter NOUN ajst-13403 46 15 are be AUX ajst-13403 46 16 few few ADJ ajst-13403 46 17 , , PUNCT ajst-13403 46 18 and and CCONJ ajst-13403 46 19 the the DET ajst-13403 46 20 input input NOUN ajst-13403 46 21 parameters parameter NOUN ajst-13403 46 22 can can AUX ajst-13403 46 23 be be AUX ajst-13403 46 24 obtained obtain VERB ajst-13403 46 25 only only ADV ajst-13403 46 26 by by ADP ajst-13403 46 27 stretching stretch VERB ajst-13403 46 28 data datum NOUN ajst-13403 46 29 . . PUNCT ajst-13403 47 1 a a DET ajst-13403 47 2 wide wide ADJ ajst-13403 47 3 range range NOUN ajst-13403 47 4 of of ADP ajst-13403 47 5 deformation deformation NOUN ajst-13403 47 6 can can AUX ajst-13403 47 7 be be AUX ajst-13403 47 8 described describe VERB ajst-13403 47 9 , , PUNCT ajst-13403 47 10 and and CCONJ ajst-13403 47 11 reasonable reasonable ADJ ajst-13403 47 12 results result NOUN ajst-13403 47 13 can can AUX ajst-13403 47 14 be be AUX ajst-13403 47 15 obtained obtain VERB ajst-13403 47 16 under under ADP ajst-13403 47 17 large large ADJ ajst-13403 47 18 uniaxial uniaxial ADJ ajst-13403 47 19 tensile tensile NOUN ajst-13403 47 20 and and CCONJ ajst-13403 47 21 simple simple ADJ ajst-13403 47 22 shear shear NOUN ajst-13403 47 23 deformation deformation NOUN ajst-13403 47 24 . . PUNCT ajst-13403 48 1 therefore therefore ADV ajst-13403 48 2 , , PUNCT ajst-13403 48 3 the the DET ajst-13403 48 4 yeoh yeoh PROPN ajst-13403 48 5 model model NOUN ajst-13403 48 6 has have VERB ajst-13403 48 7 a a DET ajst-13403 48 8 good good ADJ ajst-13403 48 9 ability ability NOUN ajst-13403 48 10 to to PART ajst-13403 48 11 fit fit VERB ajst-13403 48 12 the the DET ajst-13403 48 13 large large ADJ ajst-13403 48 14 deformation deformation NOUN ajst-13403 48 15 of of ADP ajst-13403 48 16 rubber rubber NOUN ajst-13403 48 17 , , PUNCT ajst-13403 48 18 and and CCONJ ajst-13403 48 19 is be AUX ajst-13403 48 20 particularly particularly ADV ajst-13403 48 21 suitable suitable ADJ ajst-13403 48 22 for for ADP ajst-13403 48 23 describing describe VERB ajst-13403 48 24 the the DET ajst-13403 48 25 deformation deformation NOUN ajst-13403 48 26 under under ADP ajst-13403 48 27 the the DET ajst-13403 48 28 environmental environmental ADJ ajst-13403 48 29 conditions condition NOUN ajst-13403 48 30 of of ADP ajst-13403 48 31 the the DET ajst-13403 48 32 rubber rubber NOUN ajst-13403 48 33 core core NOUN ajst-13403 48 34 of of ADP ajst-13403 48 35 the the DET ajst-13403 48 36 rotary rotary ADJ ajst-13403 48 37 blowout blowout NOUN ajst-13403 48 38 preventer preventer NOUN ajst-13403 48 39 . . PUNCT ajst-13403 49 1 2.2 2.2 NUM ajst-13403 49 2 . . PUNCT ajst-13403 49 3 rubber rubber NOUN ajst-13403 49 4 core core PROPN ajst-13403 49 5 finite finite PROPN ajst-13403 49 6 element element PROPN ajst-13403 49 7 model model NOUN ajst-13403 49 8 the the DET ajst-13403 49 9 core core NOUN ajst-13403 49 10 material material NOUN ajst-13403 49 11 of of ADP ajst-13403 49 12 the the DET ajst-13403 49 13 rotary rotary ADJ ajst-13403 49 14 blowout blowout NOUN ajst-13403 49 15 preventer preventer NOUN ajst-13403 49 16 is be AUX ajst-13403 49 17 mainly mainly ADV ajst-13403 49 18 composed compose VERB ajst-13403 49 19 of of ADP ajst-13403 49 20 nitrile nitrile ADJ ajst-13403 49 21 butadiene butadiene NOUN ajst-13403 49 22 rubber rubber NOUN ajst-13403 49 23 . . PUNCT ajst-13403 50 1 the the DET ajst-13403 50 2 core core NOUN ajst-13403 50 3 material material NOUN ajst-13403 50 4 of of ADP ajst-13403 50 5 the the DET ajst-13403 50 6 rotary rotary ADJ ajst-13403 50 7 blowout blowout NOUN ajst-13403 50 8 preventer preventer NOUN ajst-13403 50 9 is be AUX ajst-13403 50 10 prepared prepare VERB ajst-13403 50 11 into into ADP ajst-13403 50 12 dumbbell dumbbell NOUN ajst-13403 50 13 shape shape NOUN ajst-13403 50 14 and and CCONJ ajst-13403 50 15 uniaxial uniaxial ADJ ajst-13403 50 16 tensile tensile NOUN ajst-13403 50 17 test test NOUN ajst-13403 50 18 is be AUX ajst-13403 50 19 carried carry VERB ajst-13403 50 20 out out ADP ajst-13403 50 21 . . PUNCT ajst-13403 51 1 the the DET ajst-13403 51 2 data data NOUN ajst-13403 51 3 curve curve NOUN ajst-13403 51 4 was be AUX ajst-13403 51 5 fitted fit VERB ajst-13403 51 6 between between ADP ajst-13403 51 7 the the DET ajst-13403 51 8 test test NOUN ajst-13403 51 9 data datum NOUN ajst-13403 51 10 and and CCONJ ajst-13403 51 11 the the DET ajst-13403 51 12 yeoh yeoh PROPN ajst-13403 51 13 model model NOUN ajst-13403 51 14 in in ADP ajst-13403 51 15 ansys ansys PROPN ajst-13403 51 16 simulation simulation PROPN ajst-13403 51 17 software software PROPN ajst-13403 51 18 , , PUNCT ajst-13403 51 19 and and CCONJ ajst-13403 51 20 the the DET ajst-13403 51 21 fitting fitting ADJ ajst-13403 51 22 parameters parameter NOUN ajst-13403 51 23 of of ADP ajst-13403 51 24 the the DET ajst-13403 51 25 yeoh yeoh PROPN ajst-13403 51 26 model model NOUN ajst-13403 51 27 were be AUX ajst-13403 51 28 c10=1.4285mpa c10=1.4285mpa PROPN ajst-13403 51 29 , , PUNCT ajst-13403 51 30 c20=0.12011mpa c20=0.12011mpa PROPN ajst-13403 51 31 , , PUNCT ajst-13403 51 32 c30=-0.0032135mpa c30=-0.0032135mpa NOUN ajst-13403 51 33 . . PUNCT ajst-13403 52 1 in in ADP ajst-13403 52 2 the the DET ajst-13403 52 3 initial initial ADJ ajst-13403 52 4 state state NOUN ajst-13403 52 5 , , PUNCT ajst-13403 52 6 the the DET ajst-13403 52 7 drill drill NOUN ajst-13403 52 8 pipe pipe NOUN ajst-13403 52 9 is be AUX ajst-13403 52 10 inserted insert VERB ajst-13403 52 11 into into ADP ajst-13403 52 12 the the DET ajst-13403 52 13 rubber rubber NOUN ajst-13403 52 14 core core NOUN ajst-13403 52 15 in in ADP ajst-13403 52 16 a a DET ajst-13403 52 17 static static ADJ ajst-13403 52 18 state state NOUN ajst-13403 52 19 ; ; PUNCT ajst-13403 52 20 when when SCONJ ajst-13403 52 21 drilling drill VERB ajst-13403 52 22 with with ADP ajst-13403 52 23 pressure pressure NOUN ajst-13403 52 24 , , PUNCT ajst-13403 52 25 in in ADP ajst-13403 52 26 addition addition NOUN ajst-13403 52 27 to to ADP ajst-13403 52 28 the the DET ajst-13403 52 29 pre pre ADJ ajst-13403 52 30 - - ADJ ajst-13403 52 31 loading loading ADJ ajst-13403 52 32 force force NOUN ajst-13403 52 33 , , PUNCT ajst-13403 52 34 the the DET ajst-13403 52 35 outer outer ADJ ajst-13403 52 36 cone cone NOUN ajst-13403 52 37 of of ADP ajst-13403 52 38 the the DET ajst-13403 52 39 rubber rubber NOUN ajst-13403 52 40 core core NOUN ajst-13403 52 41 will will AUX ajst-13403 52 42 also also ADV ajst-13403 52 43 bear bear VERB ajst-13403 52 44 the the DET ajst-13403 52 45 pressure pressure NOUN ajst-13403 52 46 from from ADP ajst-13403 52 47 the the DET ajst-13403 52 48 drilling drilling NOUN ajst-13403 52 49 fluid fluid NOUN ajst-13403 52 50 at at ADP ajst-13403 52 51 the the DET ajst-13403 52 52 bottom bottom NOUN ajst-13403 52 53 of of ADP ajst-13403 52 54 the the DET ajst-13403 52 55 hole hole NOUN ajst-13403 52 56 . . PUNCT ajst-13403 53 1 when when SCONJ ajst-13403 53 2 the the DET ajst-13403 53 3 drill drill NOUN ajst-13403 53 4 pipe pipe NOUN ajst-13403 53 5 passes pass VERB ajst-13403 53 6 down down ADP ajst-13403 53 7 the the DET ajst-13403 53 8 rubber rubber NOUN ajst-13403 53 9 core core NOUN ajst-13403 53 10 , , PUNCT ajst-13403 53 11 it it PRON ajst-13403 53 12 will will AUX ajst-13403 53 13 exert exert VERB ajst-13403 53 14 a a DET ajst-13403 53 15 downward downward ADJ ajst-13403 53 16 friction friction NOUN ajst-13403 53 17 force force NOUN ajst-13403 53 18 on on ADP ajst-13403 53 19 the the DET ajst-13403 53 20 inner inner ADJ ajst-13403 53 21 surface surface NOUN ajst-13403 53 22 of of ADP ajst-13403 53 23 the the DET ajst-13403 53 24 rubber rubber NOUN ajst-13403 53 25 core core NOUN ajst-13403 53 26 . . PUNCT ajst-13403 54 1 when when SCONJ ajst-13403 54 2 drilling drill VERB ajst-13403 54 3 with with ADP ajst-13403 54 4 pressure pressure NOUN ajst-13403 54 5 , , PUNCT ajst-13403 54 6 in in ADP ajst-13403 54 7 addition addition NOUN ajst-13403 54 8 to to ADP ajst-13403 54 9 the the DET ajst-13403 54 10 preload preload NOUN ajst-13403 54 11 specific specific ADJ ajst-13403 54 12 pressure pressure NOUN ajst-13403 54 13 , , PUNCT ajst-13403 54 14 the the DET ajst-13403 54 15 rubber rubber NOUN ajst-13403 54 16 core core NOUN ajst-13403 54 17 will will AUX ajst-13403 54 18 also also ADV ajst-13403 54 19 withstand withstand VERB ajst-13403 54 20 the the DET ajst-13403 54 21 pressure pressure NOUN ajst-13403 54 22 from from ADP ajst-13403 54 23 the the DET ajst-13403 54 24 drilling drilling NOUN ajst-13403 54 25 fluid fluid NOUN ajst-13403 54 26 at at ADP ajst-13403 54 27 the the DET ajst-13403 54 28 bottom bottom NOUN ajst-13403 54 29 of of ADP ajst-13403 54 30 the the DET ajst-13403 54 31 hole hole NOUN ajst-13403 54 32 . . PUNCT ajst-13403 55 1 as as SCONJ ajst-13403 55 2 the the DET ajst-13403 55 3 drill drill NOUN ajst-13403 55 4 pipe pipe NOUN ajst-13403 55 5 passes pass VERB ajst-13403 55 6 upward upward ADV ajst-13403 55 7 through through ADP ajst-13403 55 8 the the DET ajst-13403 55 9 rubber rubber NOUN ajst-13403 55 10 core core NOUN ajst-13403 55 11 , , PUNCT ajst-13403 55 12 an an DET ajst-13403 55 13 upward upward ADJ ajst-13403 55 14 friction friction NOUN ajst-13403 55 15 force force NOUN ajst-13403 55 16 will will AUX ajst-13403 55 17 be be AUX ajst-13403 55 18 exerted exert VERB ajst-13403 55 19 on on ADP ajst-13403 55 20 the the DET ajst-13403 55 21 inner inner ADJ ajst-13403 55 22 surface surface NOUN ajst-13403 55 23 of of ADP ajst-13403 55 24 the the DET ajst-13403 55 25 rubber rubber NOUN ajst-13403 55 26 core core NOUN ajst-13403 55 27 . . PUNCT ajst-13403 56 1 the the DET ajst-13403 56 2 finite finite PROPN ajst-13403 56 3 element element NOUN ajst-13403 56 4 model model NOUN ajst-13403 56 5 is be AUX ajst-13403 56 6 established establish VERB ajst-13403 56 7 by by ADP ajst-13403 56 8 ansys ansys PROPN ajst-13403 56 9 software software PROPN ajst-13403 56 10 . . PUNCT ajst-13403 57 1 in in ADP ajst-13403 57 2 order order NOUN ajst-13403 57 3 to to PART ajst-13403 57 4 improve improve VERB ajst-13403 57 5 the the DET ajst-13403 57 6 calculation calculation NOUN ajst-13403 57 7 efficiency efficiency NOUN ajst-13403 57 8 of of ADP ajst-13403 57 9 the the DET ajst-13403 57 10 model model NOUN ajst-13403 57 11 , , PUNCT ajst-13403 57 12 the the DET ajst-13403 57 13 actual actual ADJ ajst-13403 57 14 structure structure NOUN ajst-13403 57 15 of of ADP ajst-13403 57 16 drill drill NOUN ajst-13403 57 17 pipe pipe NOUN ajst-13403 57 18 and and CCONJ ajst-13403 57 19 rubber rubber NOUN ajst-13403 57 20 core core NOUN ajst-13403 57 21 is be AUX ajst-13403 57 22 properly properly ADV ajst-13403 57 23 simplified simplify VERB ajst-13403 57 24 . . PUNCT ajst-13403 58 1 yeoh yeoh PROPN ajst-13403 58 2 constitutive constitutive ADJ ajst-13403 58 3 model model NOUN ajst-13403 58 4 was be AUX ajst-13403 58 5 adopted adopt VERB ajst-13403 58 6 for for ADP ajst-13403 58 7 rubber rubber NOUN ajst-13403 58 8 material material NOUN ajst-13403 58 9 parameters parameter NOUN ajst-13403 58 10 , , PUNCT ajst-13403 58 11 and and CCONJ ajst-13403 58 12 the the DET ajst-13403 58 13 stressstrain stressstrain NOUN ajst-13403 58 14 data datum NOUN ajst-13403 58 15 measured measure VERB ajst-13403 58 16 by by ADP ajst-13403 58 17 tests test NOUN ajst-13403 58 18 were be AUX ajst-13403 58 19 used use VERB ajst-13403 58 20 to to PART ajst-13403 58 21 establish establish VERB ajst-13403 58 22 the the DET ajst-13403 58 23 model model NOUN ajst-13403 58 24 . . PUNCT ajst-13403 59 1 elastic elastic ADJ ajst-13403 59 2 modulus modulus NOUN ajst-13403 59 3 of of ADP ajst-13403 59 4 drill drill NOUN ajst-13403 59 5 pipe pipe NOUN ajst-13403 59 6 material material NOUN ajst-13403 59 7 was be AUX ajst-13403 59 8 210gpa 210gpa NUM ajst-13403 59 9 , , PUNCT ajst-13403 59 10 poisson poisson PROPN ajst-13403 59 11 's 's PART ajst-13403 59 12 ratio ratio NOUN ajst-13403 59 13 was be AUX ajst-13403 59 14 0.3 0.3 NUM ajst-13403 59 15 , , PUNCT ajst-13403 59 16 and and CCONJ ajst-13403 59 17 density density NOUN ajst-13403 59 18 was be AUX ajst-13403 59 19 7.8 7.8 NUM ajst-13403 59 20 * * NOUN ajst-13403 59 21 103kg 103kg ADJ ajst-13403 59 22 / / SYM ajst-13403 59 23 m3 m3 PROPN ajst-13403 59 24 . . PUNCT ajst-13403 60 1 the the DET ajst-13403 60 2 contact contact NOUN ajst-13403 60 3 property property NOUN ajst-13403 60 4 between between ADP ajst-13403 60 5 rubber rubber NOUN ajst-13403 60 6 core core NOUN ajst-13403 60 7 and and CCONJ ajst-13403 60 8 drill drill NOUN ajst-13403 60 9 pipe pipe NOUN ajst-13403 60 10 , , PUNCT ajst-13403 60 11 rubber rubber NOUN ajst-13403 60 12 core core NOUN ajst-13403 60 13 body body NOUN ajst-13403 60 14 and and CCONJ ajst-13403 60 15 iron iron NOUN ajst-13403 60 16 core core NOUN ajst-13403 60 17 is be AUX ajst-13403 60 18 defined define VERB ajst-13403 60 19 as as ADP ajst-13403 60 20 limited limited ADJ ajst-13403 60 21 slip slip NOUN ajst-13403 60 22 . . PUNCT ajst-13403 61 1 figure figure NOUN ajst-13403 61 2 1 1 NUM ajst-13403 61 3 shows show VERB ajst-13403 61 4 the the DET ajst-13403 61 5 real real ADJ ajst-13403 61 6 rubber rubber NOUN ajst-13403 61 7 core core NOUN ajst-13403 61 8 of of ADP ajst-13403 61 9 the the DET ajst-13403 61 10 rotary rotary ADJ ajst-13403 61 11 blowout blowout NOUN ajst-13403 61 12 preventer preventer NOUN ajst-13403 61 13 , , PUNCT ajst-13403 61 14 and and CCONJ ajst-13403 61 15 the the DET ajst-13403 61 16 finite finite PROPN ajst-13403 61 17 element element PROPN ajst-13403 61 18 calculation calculation NOUN ajst-13403 61 19 model model NOUN ajst-13403 61 20 . . PUNCT ajst-13403 62 1 figure figure NOUN ajst-13403 62 2 1 1 NUM ajst-13403 62 3 . . PUNCT ajst-13403 62 4 rubber rubber NOUN ajst-13403 62 5 core core NOUN ajst-13403 62 6 and and CCONJ ajst-13403 62 7 finite finite PROPN ajst-13403 62 8 element element NOUN ajst-13403 62 9 calculation calculation NOUN ajst-13403 62 10 model model NOUN ajst-13403 62 11 of of ADP ajst-13403 62 12 rotary rotary ADJ ajst-13403 62 13 blowout blowout NOUN ajst-13403 62 14 preventer preventer NOUN ajst-13403 62 15 3 3 NUM ajst-13403 62 16 . . PUNCT ajst-13403 62 17 simulation simulation NOUN ajst-13403 62 18 analysis analysis NOUN ajst-13403 62 19 of of ADP ajst-13403 62 20 sealing seal VERB ajst-13403 62 21 performance performance NOUN ajst-13403 62 22 of of ADP ajst-13403 62 23 rubber rubber NOUN ajst-13403 62 24 core core NOUN ajst-13403 62 25 in in ADP ajst-13403 62 26 environmental environmental ADJ ajst-13403 62 27 conditions condition NOUN ajst-13403 62 28 , , PUNCT ajst-13403 62 29 the the DET ajst-13403 62 30 drill drill NOUN ajst-13403 62 31 pipe pipe NOUN ajst-13403 62 32 will will AUX ajst-13403 62 33 usually usually ADV ajst-13403 62 34 run run VERB ajst-13403 62 35 in in ADP ajst-13403 62 36 reciprocating reciprocate VERB ajst-13403 62 37 trips trip NOUN ajst-13403 62 38 . . PUNCT ajst-13403 63 1 when when SCONJ ajst-13403 63 2 the the DET ajst-13403 63 3 drill drill NOUN ajst-13403 63 4 pipe pipe NOUN ajst-13403 63 5 joint joint NOUN ajst-13403 63 6 passes pass VERB ajst-13403 63 7 the the DET ajst-13403 63 8 rubber rubber NOUN ajst-13403 63 9 core core NOUN ajst-13403 63 10 sealing seal VERB ajst-13403 63 11 surface surface NOUN ajst-13403 63 12 , , PUNCT ajst-13403 63 13 the the DET ajst-13403 63 14 rubber rubber NOUN ajst-13403 63 15 core core NOUN ajst-13403 63 16 will will AUX ajst-13403 63 17 be be AUX ajst-13403 63 18 squeezed squeeze VERB ajst-13403 63 19 and and CCONJ ajst-13403 63 20 expanded expand VERB ajst-13403 63 21 , , PUNCT ajst-13403 63 22 and and CCONJ ajst-13403 63 23 the the DET ajst-13403 63 24 contraction contraction NOUN ajst-13403 63 25 will will AUX ajst-13403 63 26 recover recover VERB ajst-13403 63 27 after after ADP ajst-13403 63 28 passing pass VERB ajst-13403 63 29 due due ADP ajst-13403 63 30 to to ADP ajst-13403 63 31 the the DET ajst-13403 63 32 elastic elastic ADJ ajst-13403 63 33 properties property NOUN ajst-13403 63 34 of of ADP ajst-13403 63 35 the the DET ajst-13403 63 36 rubber rubber NOUN ajst-13403 63 37 material material NOUN ajst-13403 63 38 . . PUNCT ajst-13403 64 1 at at ADP ajst-13403 64 2 this this DET ajst-13403 64 3 stage stage NOUN ajst-13403 64 4 , , PUNCT ajst-13403 64 5 the the DET ajst-13403 64 6 alternating alternate VERB ajst-13403 64 7 cycle cycle NOUN ajst-13403 64 8 load load NOUN ajst-13403 64 9 makes make VERB ajst-13403 64 10 the the DET ajst-13403 64 11 rubber rubber NOUN ajst-13403 64 12 core core NOUN ajst-13403 64 13 easy easy ADJ ajst-13403 64 14 to to ADP ajst-13403 64 15 fatigue fatigue NOUN ajst-13403 64 16 failure failure NOUN ajst-13403 64 17 . . PUNCT ajst-13403 65 1 ansys ansys PROPN ajst-13403 65 2 software software PROPN ajst-13403 65 3 is be AUX ajst-13403 65 4 used use VERB ajst-13403 65 5 to to PART ajst-13403 65 6 simulate simulate VERB ajst-13403 65 7 the the DET ajst-13403 65 8 process process NOUN ajst-13403 65 9 . . PUNCT ajst-13403 66 1 figure figure NOUN ajst-13403 66 2 2 2 NUM ajst-13403 66 3 reflects reflect VERB ajst-13403 66 4 the the DET ajst-13403 66 5 extrusion extrusion ADJ ajst-13403 66 6 expansion expansion NOUN ajst-13403 66 7 and and CCONJ ajst-13403 66 8 contraction contraction NOUN ajst-13403 66 9 deformation deformation NOUN ajst-13403 66 10 of of ADP ajst-13403 66 11 the the DET ajst-13403 66 12 elastomaterials elastomaterial NOUN ajst-13403 66 13 in in ADP ajst-13403 66 14 the the DET ajst-13403 66 15 trip trip NOUN ajst-13403 66 16 operation operation NOUN ajst-13403 66 17 . . PUNCT ajst-13403 67 1 figure figure NOUN ajst-13403 67 2 2 2 NUM ajst-13403 67 3 ( ( PUNCT ajst-13403 67 4 a a NOUN ajst-13403 67 5 ) ) PUNCT ajst-13403 67 6 and and CCONJ ajst-13403 67 7 figure figure VERB ajst-13403 67 8 2 2 NUM ajst-13403 67 9 ( ( PUNCT ajst-13403 67 10 b b NOUN ajst-13403 67 11 ) ) PUNCT ajst-13403 67 12 show show VERB ajst-13403 67 13 the the DET ajst-13403 67 14 change change NOUN ajst-13403 67 15 of of ADP ajst-13403 67 16 the the DET ajst-13403 67 17 overall overall ADJ ajst-13403 67 18 force force NOUN ajst-13403 67 19 on on ADP ajst-13403 67 20 the the DET ajst-13403 67 21 rubber rubber NOUN ajst-13403 67 22 core core NOUN ajst-13403 67 23 during during ADP ajst-13403 67 24 the the DET ajst-13403 67 25 trip trip NOUN ajst-13403 67 26 operation operation NOUN ajst-13403 67 27 . . PUNCT ajst-13403 68 1 at at ADP ajst-13403 68 2 t1 t1 NOUN ajst-13403 68 3 , , PUNCT ajst-13403 68 4 the the DET ajst-13403 68 5 drill drill NOUN ajst-13403 68 6 rod rod NOUN ajst-13403 68 7 body body NOUN ajst-13403 68 8 passes pass VERB ajst-13403 68 9 through through ADP ajst-13403 68 10 the the DET ajst-13403 68 11 rubber rubber NOUN ajst-13403 68 12 core core NOUN ajst-13403 68 13 , , PUNCT ajst-13403 68 14 the the DET ajst-13403 68 15 deformation deformation NOUN ajst-13403 68 16 of of ADP ajst-13403 68 17 the the DET ajst-13403 68 18 rubber rubber NOUN ajst-13403 68 19 core core NOUN ajst-13403 68 20 is be AUX ajst-13403 68 21 small small ADJ ajst-13403 68 22 , , PUNCT ajst-13403 68 23 and and CCONJ ajst-13403 68 24 the the DET ajst-13403 68 25 maximum maximum ADJ ajst-13403 68 26 equivalent equivalent ADJ ajst-13403 68 27 stress stress NOUN ajst-13403 68 28 of of ADP ajst-13403 68 29 1.65mpa 1.65mpa NUM ajst-13403 68 30 is be AUX ajst-13403 68 31 concentrated concentrate VERB ajst-13403 68 32 at at ADP ajst-13403 68 33 the the DET ajst-13403 68 34 outer outer ADJ ajst-13403 68 35 bottom bottom NOUN ajst-13403 68 36 of of ADP ajst-13403 68 37 the the DET ajst-13403 68 38 rubber rubber NOUN ajst-13403 68 39 core core NOUN ajst-13403 68 40 . . PUNCT ajst-13403 69 1 at at ADP ajst-13403 69 2 t2 t2 PROPN ajst-13403 69 3 , , PUNCT ajst-13403 69 4 the the DET ajst-13403 69 5 drill drill NOUN ajst-13403 69 6 pipe pipe NOUN ajst-13403 69 7 joint joint NOUN ajst-13403 69 8 began begin VERB ajst-13403 69 9 to to PART ajst-13403 69 10 pass pass VERB ajst-13403 69 11 through through ADP ajst-13403 69 12 the the DET ajst-13403 69 13 rubber rubber NOUN ajst-13403 69 14 core core NOUN ajst-13403 69 15 sealing seal VERB ajst-13403 69 16 surface surface NOUN ajst-13403 69 17 , , PUNCT ajst-13403 69 18 the the DET ajst-13403 69 19 rubber rubber NOUN ajst-13403 69 20 core core NOUN ajst-13403 69 21 deformation deformation NOUN ajst-13403 69 22 began begin VERB ajst-13403 69 23 to to PART ajst-13403 69 24 increase increase VERB ajst-13403 69 25 , , PUNCT ajst-13403 69 26 the the DET ajst-13403 69 27 mises mise NOUN ajst-13403 69 28 stress stress VERB ajst-13403 69 29 on on ADP ajst-13403 69 30 the the DET ajst-13403 69 31 contact contact NOUN ajst-13403 69 32 surface surface NOUN ajst-13403 69 33 of of ADP ajst-13403 69 34 the the DET ajst-13403 69 35 rubber rubber NOUN ajst-13403 69 36 core core NOUN ajst-13403 69 37 seal seal NOUN ajst-13403 69 38 began begin VERB ajst-13403 69 39 to to PART ajst-13403 69 40 increase increase VERB ajst-13403 69 41 , , PUNCT ajst-13403 69 42 and and CCONJ ajst-13403 69 43 the the DET ajst-13403 69 44 maximum maximum ADJ ajst-13403 69 45 equivalent equivalent ADJ ajst-13403 69 46 stress stress NOUN ajst-13403 69 47 was be AUX ajst-13403 69 48 19.66mpa 19.66mpa NUM ajst-13403 69 49 concentrated concentrate VERB ajst-13403 69 50 in in ADP ajst-13403 69 51 the the DET ajst-13403 69 52 sealing sealing NOUN ajst-13403 69 53 surface surface NOUN ajst-13403 69 54 . . PUNCT ajst-13403 70 1 when when SCONJ ajst-13403 70 2 the the DET ajst-13403 70 3 drill drill NOUN ajst-13403 70 4 pipe pipe NOUN ajst-13403 70 5 joint joint NOUN ajst-13403 70 6 passes pass VERB ajst-13403 70 7 through through ADP ajst-13403 70 8 the the DET ajst-13403 70 9 contact contact NOUN ajst-13403 70 10 surface surface NOUN ajst-13403 70 11 of of ADP ajst-13403 70 12 the the DET ajst-13403 70 13 rubber rubber NOUN ajst-13403 70 14 core core NOUN ajst-13403 70 15 at at ADP ajst-13403 70 16 t3 t3 PROPN ajst-13403 70 17 , , PUNCT ajst-13403 70 18 the the DET ajst-13403 70 19 rubber rubber NOUN ajst-13403 70 20 core core NOUN ajst-13403 70 21 continues continue VERB ajst-13403 70 22 to to PART ajst-13403 70 23 maintain maintain VERB ajst-13403 70 24 the the DET ajst-13403 70 25 maximum maximum ADJ ajst-13403 70 26 expansion expansion NOUN ajst-13403 70 27 by by ADP ajst-13403 70 28 the the DET ajst-13403 70 29 drill drill NOUN ajst-13403 70 30 pipe pipe NOUN ajst-13403 70 31 extrusion extrusion NOUN ajst-13403 70 32 , , PUNCT ajst-13403 70 33 and and CCONJ ajst-13403 70 34 the the DET ajst-13403 70 35 maximum maximum ADJ ajst-13403 70 36 equivalent equivalent ADJ ajst-13403 70 37 stress stress NOUN ajst-13403 70 38 19.11 19.11 NUM ajst-13403 70 39 is be AUX ajst-13403 70 40 concentrated concentrate VERB ajst-13403 70 41 in in ADP ajst-13403 70 42 the the DET ajst-13403 70 43 sealing seal VERB ajst-13403 70 44 surface surface NOUN ajst-13403 70 45 of of ADP ajst-13403 70 46 the the DET ajst-13403 70 47 rubber rubber NOUN ajst-13403 70 48 core core NOUN ajst-13403 70 49 ; ; PUNCT ajst-13403 70 50 the the DET ajst-13403 70 51 mises mise NOUN ajst-13403 70 52 stress stress VERB ajst-13403 70 53 at at ADP ajst-13403 70 54 t4 t4 PROPN ajst-13403 70 55 was be AUX ajst-13403 70 56 higher high ADJ ajst-13403 70 57 than than ADP ajst-13403 70 58 the the DET ajst-13403 70 59 mises mises PROPN ajst-13403 70 60 contact contact PROPN ajst-13403 70 61 surface surface NOUN ajst-13403 70 62 , , PUNCT ajst-13403 70 63 230 230 NUM ajst-13403 70 64 and and CCONJ ajst-13403 70 65 the the DET ajst-13403 70 66 mises mise NOUN ajst-13403 70 67 stress stress VERB ajst-13403 70 68 at at ADP ajst-13403 70 69 the the DET ajst-13403 70 70 contact contact NOUN ajst-13403 70 71 surface surface NOUN ajst-13403 70 72 was be AUX ajst-13403 70 73 23.56mpa 23.56mpa PROPN ajst-13403 70 74 at at ADV ajst-13403 70 75 most most ADV ajst-13403 70 76 during during ADP ajst-13403 70 77 the the DET ajst-13403 70 78 whole whole ADJ ajst-13403 70 79 process process NOUN ajst-13403 70 80 . . PUNCT ajst-13403 71 1 when when SCONJ ajst-13403 71 2 the the DET ajst-13403 71 3 drill drill NOUN ajst-13403 71 4 pipe pipe NOUN ajst-13403 71 5 joint joint NOUN ajst-13403 71 6 passes pass VERB ajst-13403 71 7 through through ADP ajst-13403 71 8 the the DET ajst-13403 71 9 contact contact NOUN ajst-13403 71 10 surface surface NOUN ajst-13403 71 11 of of ADP ajst-13403 71 12 the the DET ajst-13403 71 13 rubber rubber NOUN ajst-13403 71 14 core core NOUN ajst-13403 71 15 at at ADP ajst-13403 71 16 t5 t5 PROPN ajst-13403 71 17 , , PUNCT ajst-13403 71 18 the the DET ajst-13403 71 19 rubber rubber NOUN ajst-13403 71 20 core core NOUN ajst-13403 71 21 recovers recover NOUN ajst-13403 71 22 due due ADP ajst-13403 71 23 to to ADP ajst-13403 71 24 rubber rubber NOUN ajst-13403 71 25 characteristics characteristic NOUN ajst-13403 71 26 , , PUNCT ajst-13403 71 27 but but CCONJ ajst-13403 71 28 the the DET ajst-13403 71 29 overall overall ADJ ajst-13403 71 30 stress stress NOUN ajst-13403 71 31 distribution distribution NOUN ajst-13403 71 32 changes change NOUN ajst-13403 71 33 differently differently ADV ajst-13403 71 34 from from ADP ajst-13403 71 35 that that PRON ajst-13403 71 36 at at ADP ajst-13403 71 37 t1 t1 NOUN ajst-13403 71 38 , , PUNCT ajst-13403 71 39 and and CCONJ ajst-13403 71 40 its its PRON ajst-13403 71 41 maximum maximum ADJ ajst-13403 71 42 equivalent equivalent ADJ ajst-13403 71 43 stress stress NOUN ajst-13403 71 44 is be AUX ajst-13403 71 45 5.37mpa 5.37mpa NOUN ajst-13403 71 46 , , PUNCT ajst-13403 71 47 slightly slightly ADV ajst-13403 71 48 greater great ADJ ajst-13403 71 49 than than ADP ajst-13403 71 50 the the DET ajst-13403 71 51 maximum maximum ADJ ajst-13403 71 52 equivalent equivalent ADJ ajst-13403 71 53 stress stress NOUN ajst-13403 71 54 at at ADP ajst-13403 71 55 t1 t1 PROPN ajst-13403 71 56 . . PUNCT ajst-13403 72 1 figure figure NOUN ajst-13403 72 2 2 2 NUM ajst-13403 72 3 ( ( PUNCT ajst-13403 72 4 a a X ajst-13403 72 5 ) ) PUNCT ajst-13403 72 6 the the DET ajst-13403 72 7 trip trip NOUN ajst-13403 72 8 calculation calculation NOUN ajst-13403 72 9 process process NOUN ajst-13403 72 10 figure figure NOUN ajst-13403 72 11 2 2 NUM ajst-13403 72 12 ( ( PUNCT ajst-13403 72 13 b b NOUN ajst-13403 72 14 ) ) PUNCT ajst-13403 72 15 contact contact NOUN ajst-13403 72 16 stress stress NOUN ajst-13403 72 17 between between ADP ajst-13403 72 18 sealing seal VERB ajst-13403 72 19 surface surface NOUN ajst-13403 72 20 and and CCONJ ajst-13403 72 21 drill drill NOUN ajst-13403 72 22 pipe pipe NOUN ajst-13403 72 23 figure figure NOUN ajst-13403 72 24 2 2 NUM ajst-13403 72 25 . . PUNCT ajst-13403 72 26 force force NOUN ajst-13403 72 27 analysis analysis NOUN ajst-13403 72 28 of of ADP ajst-13403 72 29 rubber rubber NOUN ajst-13403 72 30 core core NOUN ajst-13403 72 31 in in ADP ajst-13403 72 32 trip trip NOUN ajst-13403 72 33 mises mises PROPN ajst-13403 72 34 stress stress NOUN ajst-13403 72 35 curves curve NOUN ajst-13403 72 36 were be AUX ajst-13403 72 37 obtained obtain VERB ajst-13403 72 38 when when SCONJ ajst-13403 72 39 the the DET ajst-13403 72 40 mises mises PROPN ajst-13403 72 41 stress stress NOUN ajst-13403 72 42 surface surface NOUN ajst-13403 72 43 was be AUX ajst-13403 72 44 in in ADP ajst-13403 72 45 contact contact NOUN ajst-13403 72 46 with with ADP ajst-13403 72 47 the the DET ajst-13403 72 48 drill drill NOUN ajst-13403 72 49 pipe pipe NOUN ajst-13403 72 50 at at ADP ajst-13403 72 51 different different ADJ ajst-13403 72 52 positions position NOUN ajst-13403 72 53 during during ADP ajst-13403 72 54 trip trip NOUN ajst-13403 72 55 out out ADP ajst-13403 72 56 , , PUNCT ajst-13403 72 57 as as SCONJ ajst-13403 72 58 shown show VERB ajst-13403 72 59 in in ADP ajst-13403 72 60 figure figure NOUN ajst-13403 72 61 2 2 NUM ajst-13403 72 62 ( ( PUNCT ajst-13403 72 63 b b NOUN ajst-13403 72 64 ) ) PUNCT ajst-13403 72 65 , , PUNCT ajst-13403 72 66 when when SCONJ ajst-13403 72 67 the the DET ajst-13403 72 68 drill drill NOUN ajst-13403 72 69 pipe pipe NOUN ajst-13403 72 70 joint joint NOUN ajst-13403 72 71 did do AUX ajst-13403 72 72 not not PART ajst-13403 72 73 touch touch VERB ajst-13403 72 74 the the DET ajst-13403 72 75 drill drill NOUN ajst-13403 72 76 pipe pipe NOUN ajst-13403 72 77 surface surface NOUN ajst-13403 72 78 , , PUNCT ajst-13403 72 79 the the DET ajst-13403 72 80 mises mise NOUN ajst-13403 72 81 stress stress NOUN ajst-13403 72 82 was be AUX ajst-13403 72 83 only only ADV ajst-13403 72 84 affected affect VERB ajst-13403 72 85 by by ADP ajst-13403 72 86 the the DET ajst-13403 72 87 preloading preloading NOUN ajst-13403 72 88 force force NOUN ajst-13403 72 89 . . PUNCT ajst-13403 73 1 mises mise NOUN ajst-13403 73 2 stress stress VERB ajst-13403 73 3 on on ADP ajst-13403 73 4 the the DET ajst-13403 73 5 sealing seal VERB ajst-13403 73 6 surface surface NOUN ajst-13403 73 7 changed change VERB ajst-13403 73 8 little little ADJ ajst-13403 73 9 . . PUNCT ajst-13403 74 1 when when SCONJ ajst-13403 74 2 the the DET ajst-13403 74 3 beveled bevel VERB ajst-13403 74 4 edge edge NOUN ajst-13403 74 5 of of ADP ajst-13403 74 6 the the DET ajst-13403 74 7 drill drill NOUN ajst-13403 74 8 pipe pipe NOUN ajst-13403 74 9 joint joint ADJ ajst-13403 74 10 first first ADJ ajst-13403 74 11 contacts contact NOUN ajst-13403 74 12 the the DET ajst-13403 74 13 mises mise NOUN ajst-13403 74 14 stress stress VERB ajst-13403 74 15 on on ADP ajst-13403 74 16 the the DET ajst-13403 74 17 seal seal NOUN ajst-13403 74 18 surface surface NOUN ajst-13403 74 19 , , PUNCT ajst-13403 74 20 the the DET ajst-13403 74 21 mises mise NOUN ajst-13403 74 22 stress stress VERB ajst-13403 74 23 change change NOUN ajst-13403 74 24 increases increase NOUN ajst-13403 74 25 significantly significantly ADV ajst-13403 74 26 , , PUNCT ajst-13403 74 27 and and CCONJ ajst-13403 74 28 the the DET ajst-13403 74 29 mises mise NOUN ajst-13403 74 30 stress stress NOUN ajst-13403 74 31 peak peak NOUN ajst-13403 74 32 value value NOUN ajst-13403 74 33 is be AUX ajst-13403 74 34 relatively relatively ADV ajst-13403 74 35 large large ADJ ajst-13403 74 36 when when SCONJ ajst-13403 74 37 the the DET ajst-13403 74 38 drill drill NOUN ajst-13403 74 39 pipe pipe NOUN ajst-13403 74 40 joint joint ADJ ajst-13403 74 41 rod rod NOUN ajst-13403 74 42 body body NOUN ajst-13403 74 43 passes pass VERB ajst-13403 74 44 through through ADP ajst-13403 74 45 the the DET ajst-13403 74 46 rubber rubber NOUN ajst-13403 74 47 core core NOUN ajst-13403 74 48 seal seal NOUN ajst-13403 74 49 surface surface NOUN ajst-13403 74 50 . . PUNCT ajst-13403 75 1 the the DET ajst-13403 75 2 beveled bevel VERB ajst-13403 75 3 edge edge NOUN ajst-13403 75 4 of of ADP ajst-13403 75 5 the the DET ajst-13403 75 6 drill drill NOUN ajst-13403 75 7 pipe pipe NOUN ajst-13403 75 8 joint joint NOUN ajst-13403 75 9 passes pass VERB ajst-13403 75 10 through through ADP ajst-13403 75 11 the the DET ajst-13403 75 12 rubber rubber NOUN ajst-13403 75 13 core core NOUN ajst-13403 75 14 sealing seal VERB ajst-13403 75 15 surface surface NOUN ajst-13403 75 16 twice twice ADV ajst-13403 75 17 , , PUNCT ajst-13403 75 18 and and CCONJ ajst-13403 75 19 the the DET ajst-13403 75 20 mises mise NOUN ajst-13403 75 21 stress stress NOUN ajst-13403 75 22 peak peak NOUN ajst-13403 75 23 value value NOUN ajst-13403 75 24 is be AUX ajst-13403 75 25 the the DET ajst-13403 75 26 largest large ADJ ajst-13403 75 27 when when SCONJ ajst-13403 75 28 the the DET ajst-13403 75 29 rubber rubber NOUN ajst-13403 75 30 core core NOUN ajst-13403 75 31 begins begin VERB ajst-13403 75 32 to to PART ajst-13403 75 33 shrink shrink VERB ajst-13403 75 34 and and CCONJ ajst-13403 75 35 recover recover VERB ajst-13403 75 36 . . PUNCT ajst-13403 76 1 the the DET ajst-13403 76 2 mises mises PROPN ajst-13403 76 3 stress stress NOUN ajst-13403 76 4 increased increase VERB ajst-13403 76 5 to to ADP ajst-13403 76 6 the the DET ajst-13403 76 7 peak peak NOUN ajst-13403 76 8 value value NOUN ajst-13403 76 9 and and CCONJ ajst-13403 76 10 then then ADV ajst-13403 76 11 decreased decrease VERB ajst-13403 76 12 when when SCONJ ajst-13403 76 13 the the DET ajst-13403 76 14 bevel bevel NOUN ajst-13403 76 15 edge edge NOUN ajst-13403 76 16 of of ADP ajst-13403 76 17 the the DET ajst-13403 76 18 drill drill NOUN ajst-13403 76 19 pipe pipe NOUN ajst-13403 76 20 joint joint NOUN ajst-13403 76 21 passed pass VERB ajst-13403 76 22 through through ADP ajst-13403 76 23 the the DET ajst-13403 76 24 rubber rubber NOUN ajst-13403 76 25 core core NOUN ajst-13403 76 26 sealing seal VERB ajst-13403 76 27 surface surface NOUN ajst-13403 76 28 . . PUNCT ajst-13403 77 1 the the DET ajst-13403 77 2 stress stress NOUN ajst-13403 77 3 change change NOUN ajst-13403 77 4 of of ADP ajst-13403 77 5 the the DET ajst-13403 77 6 sealing seal VERB ajst-13403 77 7 surface surface NOUN ajst-13403 77 8 of of ADP ajst-13403 77 9 the the DET ajst-13403 77 10 rubber rubber NOUN ajst-13403 77 11 core core NOUN ajst-13403 77 12 is be AUX ajst-13403 77 13 mainly mainly ADV ajst-13403 77 14 concentrated concentrate VERB ajst-13403 77 15 at at ADP ajst-13403 77 16 the the DET ajst-13403 77 17 bottom bottom NOUN ajst-13403 77 18 of of ADP ajst-13403 77 19 the the DET ajst-13403 77 20 rubber rubber NOUN ajst-13403 77 21 core core NOUN ajst-13403 77 22 during during ADP ajst-13403 77 23 tripping trip VERB ajst-13403 77 24 . . PUNCT ajst-13403 78 1 the the DET ajst-13403 78 2 stress stress NOUN ajst-13403 78 3 amplitude amplitude NOUN ajst-13403 78 4 is be AUX ajst-13403 78 5 an an DET ajst-13403 78 6 important important ADJ ajst-13403 78 7 factor factor NOUN ajst-13403 78 8 that that PRON ajst-13403 78 9 reflects reflect VERB ajst-13403 78 10 the the DET ajst-13403 78 11 fatigue fatigue NOUN ajst-13403 78 12 failure failure NOUN ajst-13403 78 13 of of ADP ajst-13403 78 14 the the DET ajst-13403 78 15 rubber rubber NOUN ajst-13403 78 16 core core NOUN ajst-13403 78 17 , , PUNCT ajst-13403 78 18 so so SCONJ ajst-13403 78 19 the the DET ajst-13403 78 20 stress stress NOUN ajst-13403 78 21 changes change NOUN ajst-13403 78 22 near near ADP ajst-13403 78 23 the the DET ajst-13403 78 24 bottom bottom NOUN ajst-13403 78 25 of of ADP ajst-13403 78 26 the the DET ajst-13403 78 27 rubber rubber NOUN ajst-13403 78 28 core core NOUN ajst-13403 78 29 sealing seal VERB ajst-13403 78 30 surface surface NOUN ajst-13403 78 31 , , PUNCT ajst-13403 78 32 and and CCONJ ajst-13403 78 33 the the DET ajst-13403 78 34 fatigue fatigue NOUN ajst-13403 78 35 failure failure NOUN ajst-13403 78 36 of of ADP ajst-13403 78 37 the the DET ajst-13403 78 38 rubber rubber NOUN ajst-13403 78 39 core core NOUN ajst-13403 78 40 is be AUX ajst-13403 78 41 easy easy ADJ ajst-13403 78 42 to to PART ajst-13403 78 43 be be AUX ajst-13403 78 44 caused cause VERB ajst-13403 78 45 when when SCONJ ajst-13403 78 46 the the DET ajst-13403 78 47 hypotenuse hypotenuse NOUN ajst-13403 78 48 of of ADP ajst-13403 78 49 the the DET ajst-13403 78 50 drill drill NOUN ajst-13403 78 51 pipe pipe NOUN ajst-13403 78 52 joint joint NOUN ajst-13403 78 53 touches touch VERB ajst-13403 78 54 the the DET ajst-13403 78 55 two two NUM ajst-13403 78 56 stages stage NOUN ajst-13403 78 57 of of ADP ajst-13403 78 58 the the DET ajst-13403 78 59 rubber rubber NOUN ajst-13403 78 60 core core NOUN ajst-13403 78 61 sealing seal VERB ajst-13403 78 62 surface surface NOUN ajst-13403 78 63 . . PUNCT ajst-13403 79 1 4 4 X ajst-13403 79 2 . . X ajst-13403 79 3 the the DET ajst-13403 79 4 effect effect NOUN ajst-13403 79 5 of of ADP ajst-13403 79 6 stomatal stomatal ADJ ajst-13403 79 7 defects defect NOUN ajst-13403 79 8 and and CCONJ ajst-13403 79 9 metal metal NOUN ajst-13403 79 10 degumming degumme VERB ajst-13403 79 11 4.1 4.1 NUM ajst-13403 79 12 . . PUNCT ajst-13403 80 1 effect effect NOUN ajst-13403 80 2 of of ADP ajst-13403 80 3 bubble bubble NOUN ajst-13403 80 4 defects defect NOUN ajst-13403 80 5 under under ADP ajst-13403 80 6 different different ADJ ajst-13403 80 7 drilling drilling NOUN ajst-13403 80 8 fluid fluid NOUN ajst-13403 80 9 pressures pressure NOUN ajst-13403 80 10 according accord VERB ajst-13403 80 11 to to ADP ajst-13403 80 12 the the DET ajst-13403 80 13 above above ADJ ajst-13403 80 14 force force NOUN ajst-13403 80 15 analysis analysis NOUN ajst-13403 80 16 , , PUNCT ajst-13403 80 17 the the DET ajst-13403 80 18 sealing seal VERB ajst-13403 80 19 surface surface NOUN ajst-13403 80 20 of of ADP ajst-13403 80 21 the the DET ajst-13403 80 22 rubber rubber NOUN ajst-13403 80 23 core core NOUN ajst-13403 80 24 will will AUX ajst-13403 80 25 show show VERB ajst-13403 80 26 transverse transverse NOUN ajst-13403 80 27 stretching stretch VERB ajst-13403 80 28 deformation deformation NOUN ajst-13403 80 29 during during ADP ajst-13403 80 30 the the DET ajst-13403 80 31 process process NOUN ajst-13403 80 32 of of ADP ajst-13403 80 33 drilling drill VERB ajst-13403 80 34 with with ADP ajst-13403 80 35 pressure pressure NOUN ajst-13403 80 36 , , PUNCT ajst-13403 80 37 and and CCONJ ajst-13403 80 38 the the DET ajst-13403 80 39 rubber rubber NOUN ajst-13403 80 40 core core NOUN ajst-13403 80 41 will will AUX ajst-13403 80 42 show show VERB ajst-13403 80 43 upward upward ADJ ajst-13403 80 44 compression compression NOUN ajst-13403 80 45 during during ADP ajst-13403 80 46 the the DET ajst-13403 80 47 process process NOUN ajst-13403 80 48 of of ADP ajst-13403 80 49 drilling drilling NOUN ajst-13403 80 50 . . PUNCT ajst-13403 81 1 it it PRON ajst-13403 81 2 can can AUX ajst-13403 81 3 be be AUX ajst-13403 81 4 seen see VERB ajst-13403 81 5 from from ADP ajst-13403 81 6 figure figure NOUN ajst-13403 81 7 3 3 NUM ajst-13403 81 8 that that SCONJ ajst-13403 81 9 the the DET ajst-13403 81 10 contact contact NOUN ajst-13403 81 11 stress stress NOUN ajst-13403 81 12 of of ADP ajst-13403 81 13 the the DET ajst-13403 81 14 rubber rubber NOUN ajst-13403 81 15 core core NOUN ajst-13403 81 16 is be AUX ajst-13403 81 17 basically basically ADV ajst-13403 81 18 the the DET ajst-13403 81 19 same same ADJ ajst-13403 81 20 during during ADP ajst-13403 81 21 drilling drilling NOUN ajst-13403 81 22 . . PUNCT ajst-13403 82 1 in in ADP ajst-13403 82 2 the the DET ajst-13403 82 3 231 231 NUM ajst-13403 82 4 process process NOUN ajst-13403 82 5 of of ADP ajst-13403 82 6 drilling drilling NOUN ajst-13403 82 7 , , PUNCT ajst-13403 82 8 the the DET ajst-13403 82 9 contact contact NOUN ajst-13403 82 10 stress stress NOUN ajst-13403 82 11 at at ADP ajst-13403 82 12 the the DET ajst-13403 82 13 sealing sealing NOUN ajst-13403 82 14 surface surface NOUN ajst-13403 82 15 is be AUX ajst-13403 82 16 greater great ADJ ajst-13403 82 17 than than ADP ajst-13403 82 18 10mpa 10mpa NOUN ajst-13403 82 19 ( ( PUNCT ajst-13403 82 20 24.649mpa 24.649mpa NOUN ajst-13403 82 21 , , PUNCT ajst-13403 82 22 17.829mpa 17.829mpa PROPN ajst-13403 82 23 , , PUNCT ajst-13403 82 24 26.487mpa 26.487mpa NOUN ajst-13403 82 25 , , PUNCT ajst-13403 82 26 respectively respectively ADV ajst-13403 82 27 ) ) PUNCT ajst-13403 82 28 , , PUNCT ajst-13403 82 29 and and CCONJ ajst-13403 82 30 the the DET ajst-13403 82 31 sealing sealing NOUN ajst-13403 82 32 effect effect NOUN ajst-13403 82 33 of of ADP ajst-13403 82 34 rubber rubber NOUN ajst-13403 82 35 core core NOUN ajst-13403 82 36 is be AUX ajst-13403 82 37 good good ADJ ajst-13403 82 38 . . PUNCT ajst-13403 83 1 therefore therefore ADV ajst-13403 83 2 , , PUNCT ajst-13403 83 3 the the DET ajst-13403 83 4 contact contact NOUN ajst-13403 83 5 stress stress NOUN ajst-13403 83 6 and and CCONJ ajst-13403 83 7 contact contact NOUN ajst-13403 83 8 area area NOUN ajst-13403 83 9 of of ADP ajst-13403 83 10 the the DET ajst-13403 83 11 rubber rubber NOUN ajst-13403 83 12 core core NOUN ajst-13403 83 13 when when SCONJ ajst-13403 83 14 it it PRON ajst-13403 83 15 passes pass VERB ajst-13403 83 16 through through ADP ajst-13403 83 17 the the DET ajst-13403 83 18 joint joint NOUN ajst-13403 83 19 of of ADP ajst-13403 83 20 the the DET ajst-13403 83 21 drill drill NOUN ajst-13403 83 22 pipe pipe NOUN ajst-13403 83 23 are be AUX ajst-13403 83 24 greater great ADJ ajst-13403 83 25 than than ADP ajst-13403 83 26 that that PRON ajst-13403 83 27 when when SCONJ ajst-13403 83 28 it it PRON ajst-13403 83 29 passes pass VERB ajst-13403 83 30 through through ADP ajst-13403 83 31 the the DET ajst-13403 83 32 body body NOUN ajst-13403 83 33 of of ADP ajst-13403 83 34 the the DET ajst-13403 83 35 drill drill NOUN ajst-13403 83 36 pipe pipe NOUN ajst-13403 83 37 . . PUNCT ajst-13403 84 1 generally generally ADV ajst-13403 84 2 speaking speak VERB ajst-13403 84 3 , , PUNCT ajst-13403 84 4 the the DET ajst-13403 84 5 drilling drilling NOUN ajst-13403 84 6 conditions condition NOUN ajst-13403 84 7 have have VERB ajst-13403 84 8 great great ADJ ajst-13403 84 9 influence influence NOUN ajst-13403 84 10 on on ADP ajst-13403 84 11 the the DET ajst-13403 84 12 sealing sealing NOUN ajst-13403 84 13 performance performance NOUN ajst-13403 84 14 of of ADP ajst-13403 84 15 rubber rubber NOUN ajst-13403 84 16 core core NOUN ajst-13403 84 17 . . PUNCT ajst-13403 85 1 it it PRON ajst-13403 85 2 can can AUX ajst-13403 85 3 be be AUX ajst-13403 85 4 seen see VERB ajst-13403 85 5 from from ADP ajst-13403 85 6 figure figure NOUN ajst-13403 85 7 4 4 NUM ajst-13403 85 8 and and CCONJ ajst-13403 85 9 figure figure VERB ajst-13403 85 10 5 5 NUM ajst-13403 85 11 that that SCONJ ajst-13403 85 12 the the DET ajst-13403 85 13 maximum maximum ADJ ajst-13403 85 14 contact contact NOUN ajst-13403 85 15 pressure pressure NOUN ajst-13403 85 16 still still ADV ajst-13403 85 17 occurs occur VERB ajst-13403 85 18 at at ADP ajst-13403 85 19 the the DET ajst-13403 85 20 junction junction NOUN ajst-13403 85 21 between between ADP ajst-13403 85 22 the the DET ajst-13403 85 23 inner inner ADJ ajst-13403 85 24 cone cone NOUN ajst-13403 85 25 and and CCONJ ajst-13403 85 26 the the DET ajst-13403 85 27 main main ADJ ajst-13403 85 28 sealing sealing NOUN ajst-13403 85 29 surface surface NOUN ajst-13403 85 30 before before ADP ajst-13403 85 31 the the DET ajst-13403 85 32 core core NOUN ajst-13403 85 33 deformation deformation NOUN ajst-13403 85 34 . . PUNCT ajst-13403 86 1 under under ADP ajst-13403 86 2 different different ADJ ajst-13403 86 3 drilling drilling NOUN ajst-13403 86 4 fluid fluid NOUN ajst-13403 86 5 pressures pressure NOUN ajst-13403 86 6 , , PUNCT ajst-13403 86 7 as as SCONJ ajst-13403 86 8 the the DET ajst-13403 86 9 pressure pressure NOUN ajst-13403 86 10 increases increase NOUN ajst-13403 86 11 , , PUNCT ajst-13403 86 12 the the DET ajst-13403 86 13 drilling drilling NOUN ajst-13403 86 14 fluid fluid NOUN ajst-13403 86 15 pressure pressure NOUN ajst-13403 86 16 increases increase NOUN ajst-13403 86 17 and and CCONJ ajst-13403 86 18 the the DET ajst-13403 86 19 peak peak NOUN ajst-13403 86 20 pressure pressure NOUN ajst-13403 86 21 increases increase VERB ajst-13403 86 22 gradually gradually ADV ajst-13403 86 23 at at ADP ajst-13403 86 24 the the DET ajst-13403 86 25 same same ADJ ajst-13403 86 26 drilling drilling NOUN ajst-13403 86 27 time time NOUN ajst-13403 86 28 . . PUNCT ajst-13403 87 1 it it PRON ajst-13403 87 2 can can AUX ajst-13403 87 3 be be AUX ajst-13403 87 4 found find VERB ajst-13403 87 5 that that SCONJ ajst-13403 87 6 with with ADP ajst-13403 87 7 the the DET ajst-13403 87 8 increase increase NOUN ajst-13403 87 9 of of ADP ajst-13403 87 10 wellhead wellhead NOUN ajst-13403 87 11 pressure pressure NOUN ajst-13403 87 12 , , PUNCT ajst-13403 87 13 the the DET ajst-13403 87 14 deformation deformation NOUN ajst-13403 87 15 of of ADP ajst-13403 87 16 the the DET ajst-13403 87 17 rubber rubber NOUN ajst-13403 87 18 core core NOUN ajst-13403 87 19 increases increase NOUN ajst-13403 87 20 , , PUNCT ajst-13403 87 21 and and CCONJ ajst-13403 87 22 the the DET ajst-13403 87 23 contact contact NOUN ajst-13403 87 24 length length NOUN ajst-13403 87 25 between between ADP ajst-13403 87 26 the the DET ajst-13403 87 27 inner inner ADJ ajst-13403 87 28 cone cone NOUN ajst-13403 87 29 of of ADP ajst-13403 87 30 the the DET ajst-13403 87 31 rubber rubber NOUN ajst-13403 87 32 core core NOUN ajst-13403 87 33 and and CCONJ ajst-13403 87 34 the the DET ajst-13403 87 35 drill drill NOUN ajst-13403 87 36 pipe pipe NOUN ajst-13403 87 37 increases increase NOUN ajst-13403 87 38 . . PUNCT ajst-13403 88 1 the the DET ajst-13403 88 2 contact contact NOUN ajst-13403 88 3 pressure pressure NOUN ajst-13403 88 4 of of ADP ajst-13403 88 5 the the DET ajst-13403 88 6 main main ADJ ajst-13403 88 7 sealing sealing NOUN ajst-13403 88 8 section section NOUN ajst-13403 88 9 is be AUX ajst-13403 88 10 greater great ADJ ajst-13403 88 11 than than ADP ajst-13403 88 12 the the DET ajst-13403 88 13 corresponding corresponding ADJ ajst-13403 88 14 wellhead wellhead NOUN ajst-13403 88 15 pressure pressure NOUN ajst-13403 88 16 , , PUNCT ajst-13403 88 17 which which PRON ajst-13403 88 18 can can AUX ajst-13403 88 19 form form VERB ajst-13403 88 20 a a DET ajst-13403 88 21 good good ADJ ajst-13403 88 22 seal seal NOUN ajst-13403 88 23 , , PUNCT ajst-13403 88 24 reflecting reflect VERB ajst-13403 88 25 the the DET ajst-13403 88 26 self self NOUN ajst-13403 88 27 - - PUNCT ajst-13403 88 28 sealing seal VERB ajst-13403 88 29 performance performance NOUN ajst-13403 88 30 of of ADP ajst-13403 88 31 the the DET ajst-13403 88 32 conical conical ADJ ajst-13403 88 33 rubber rubber NOUN ajst-13403 88 34 core core NOUN ajst-13403 88 35 . . PUNCT ajst-13403 89 1 the the DET ajst-13403 89 2 contact contact NOUN ajst-13403 89 3 pressure pressure NOUN ajst-13403 89 4 of of ADP ajst-13403 89 5 some some DET ajst-13403 89 6 nodes node NOUN ajst-13403 89 7 in in ADP ajst-13403 89 8 the the DET ajst-13403 89 9 horn horn NOUN ajst-13403 89 10 of of ADP ajst-13403 89 11 the the DET ajst-13403 89 12 inner inner ADJ ajst-13403 89 13 cone cone NOUN ajst-13403 89 14 is be AUX ajst-13403 89 15 greater great ADJ ajst-13403 89 16 than than ADP ajst-13403 89 17 the the DET ajst-13403 89 18 corresponding corresponding ADJ ajst-13403 89 19 wellhead wellhead NOUN ajst-13403 89 20 pressure pressure NOUN ajst-13403 89 21 , , PUNCT ajst-13403 89 22 which which PRON ajst-13403 89 23 also also ADV ajst-13403 89 24 plays play VERB ajst-13403 89 25 a a DET ajst-13403 89 26 certain certain ADJ ajst-13403 89 27 role role NOUN ajst-13403 89 28 in in ADP ajst-13403 89 29 auxiliary auxiliary ADJ ajst-13403 89 30 sealing sealing NOUN ajst-13403 89 31 . . PUNCT ajst-13403 90 1 the the DET ajst-13403 90 2 contact contact NOUN ajst-13403 90 3 area area NOUN ajst-13403 90 4 between between ADP ajst-13403 90 5 the the DET ajst-13403 90 6 core core NOUN ajst-13403 90 7 and and CCONJ ajst-13403 90 8 the the DET ajst-13403 90 9 drill drill NOUN ajst-13403 90 10 pipe pipe NOUN ajst-13403 90 11 increases increase VERB ajst-13403 90 12 with with ADP ajst-13403 90 13 the the DET ajst-13403 90 14 increase increase NOUN ajst-13403 90 15 of of ADP ajst-13403 90 16 pressure pressure NOUN ajst-13403 90 17 , , PUNCT ajst-13403 90 18 which which PRON ajst-13403 90 19 can can AUX ajst-13403 90 20 increase increase VERB ajst-13403 90 21 the the DET ajst-13403 90 22 wear wear NOUN ajst-13403 90 23 resistance resistance NOUN ajst-13403 90 24 of of ADP ajst-13403 90 25 the the DET ajst-13403 90 26 core core NOUN ajst-13403 90 27 and and CCONJ ajst-13403 90 28 increase increase VERB ajst-13403 90 29 the the DET ajst-13403 90 30 service service NOUN ajst-13403 90 31 life life NOUN ajst-13403 90 32 of of ADP ajst-13403 90 33 the the DET ajst-13403 90 34 core core NOUN ajst-13403 90 35 . . PUNCT ajst-13403 91 1 however however ADV ajst-13403 91 2 , , PUNCT ajst-13403 91 3 the the DET ajst-13403 91 4 size size NOUN ajst-13403 91 5 of of ADP ajst-13403 91 6 drilling drilling NOUN ajst-13403 91 7 fluid fluid NOUN ajst-13403 91 8 pressure pressure NOUN ajst-13403 91 9 can can AUX ajst-13403 91 10 not not PART ajst-13403 91 11 be be AUX ajst-13403 91 12 infinite infinite ADJ ajst-13403 91 13 increase increase NOUN ajst-13403 91 14 , , PUNCT ajst-13403 91 15 because because SCONJ ajst-13403 91 16 under under ADP ajst-13403 91 17 a a DET ajst-13403 91 18 certain certain ADJ ajst-13403 91 19 drill drill NOUN ajst-13403 91 20 pipe pipe NOUN ajst-13403 91 21 equipment equipment NOUN ajst-13403 91 22 , , PUNCT ajst-13403 91 23 the the PRON ajst-13403 91 24 greater great ADJ ajst-13403 91 25 the the DET ajst-13403 91 26 pressure pressure NOUN ajst-13403 91 27 , , PUNCT ajst-13403 91 28 the the PRON ajst-13403 91 29 greater great ADJ ajst-13403 91 30 the the DET ajst-13403 91 31 contact contact NOUN ajst-13403 91 32 pressure pressure NOUN ajst-13403 91 33 of of ADP ajst-13403 91 34 the the DET ajst-13403 91 35 rubber rubber NOUN ajst-13403 91 36 core core NOUN ajst-13403 91 37 to to ADP ajst-13403 91 38 the the DET ajst-13403 91 39 drill drill NOUN ajst-13403 91 40 pipe pipe NOUN ajst-13403 91 41 , , PUNCT ajst-13403 91 42 so so CCONJ ajst-13403 91 43 the the DET ajst-13403 91 44 reasonable reasonable ADJ ajst-13403 91 45 determination determination NOUN ajst-13403 91 46 of of ADP ajst-13403 91 47 the the DET ajst-13403 91 48 size size NOUN ajst-13403 91 49 of of ADP ajst-13403 91 50 drilling drilling NOUN ajst-13403 91 51 fluid fluid NOUN ajst-13403 91 52 pressure pressure NOUN ajst-13403 91 53 is be AUX ajst-13403 91 54 very very ADV ajst-13403 91 55 important important ADJ ajst-13403 91 56 to to PART ajst-13403 91 57 improve improve VERB ajst-13403 91 58 the the DET ajst-13403 91 59 life life NOUN ajst-13403 91 60 of of ADP ajst-13403 91 61 the the DET ajst-13403 91 62 rubber rubber NOUN ajst-13403 91 63 core core NOUN ajst-13403 91 64 . . PUNCT ajst-13403 92 1 figure figure NOUN ajst-13403 92 2 3 3 NUM ajst-13403 92 3 . . PUNCT ajst-13403 92 4 drilling drill VERB ajst-13403 92 5 fluid fluid NOUN ajst-13403 92 6 pressure pressure NOUN ajst-13403 92 7 1mpa 1mpa NUM ajst-13403 92 8 figure figure NOUN ajst-13403 92 9 4 4 NUM ajst-13403 92 10 . . PUNCT ajst-13403 93 1 drilling drill VERB ajst-13403 93 2 fluid fluid NOUN ajst-13403 93 3 pressure pressure NOUN ajst-13403 93 4 2.5mpa 2.5mpa NUM ajst-13403 93 5 232 232 NUM ajst-13403 93 6 figure figure NOUN ajst-13403 93 7 5 5 NUM ajst-13403 93 8 . . PUNCT ajst-13403 93 9 drilling drill VERB ajst-13403 93 10 fluid fluid NOUN ajst-13403 93 11 pressure pressure NOUN ajst-13403 93 12 4mpa 4mpa NOUN ajst-13403 93 13 table table NOUN ajst-13403 93 14 1 1 NUM ajst-13403 93 15 shows show VERB ajst-13403 93 16 the the DET ajst-13403 93 17 comparative comparative ADJ ajst-13403 93 18 analysis analysis NOUN ajst-13403 93 19 of of ADP ajst-13403 93 20 the the DET ajst-13403 93 21 maximum maximum ADJ ajst-13403 93 22 equivalent equivalent ADJ ajst-13403 93 23 stress stress NOUN ajst-13403 93 24 of of ADP ajst-13403 93 25 the the DET ajst-13403 93 26 inner inner ADJ ajst-13403 93 27 bubble bubble NOUN ajst-13403 93 28 defect defect NOUN ajst-13403 93 29 core core NOUN ajst-13403 93 30 under under ADP ajst-13403 93 31 different different ADJ ajst-13403 93 32 drilling drilling NOUN ajst-13403 93 33 fluid fluid NOUN ajst-13403 93 34 pressures pressure NOUN ajst-13403 93 35 . . PUNCT ajst-13403 94 1 at at ADP ajst-13403 94 2 0.21 0.21 NUM ajst-13403 94 3 - - PUNCT ajst-13403 94 4 1.1194s 1.1194s NUM ajst-13403 94 5 , , PUNCT ajst-13403 94 6 the the DET ajst-13403 94 7 maximum maximum ADJ ajst-13403 94 8 equivalent equivalent ADJ ajst-13403 94 9 stress stress NOUN ajst-13403 94 10 of of ADP ajst-13403 94 11 the the DET ajst-13403 94 12 core core NOUN ajst-13403 94 13 showed show VERB ajst-13403 94 14 a a DET ajst-13403 94 15 slow slow ADJ ajst-13403 94 16 growth growth NOUN ajst-13403 94 17 trend trend NOUN ajst-13403 94 18 with with ADP ajst-13403 94 19 the the DET ajst-13403 94 20 increase increase NOUN ajst-13403 94 21 of of ADP ajst-13403 94 22 drilling drill VERB ajst-13403 94 23 fluid fluid ADJ ajst-13403 94 24 pressure pressure NOUN ajst-13403 94 25 during during ADP ajst-13403 94 26 this this DET ajst-13403 94 27 period period NOUN ajst-13403 94 28 . . PUNCT ajst-13403 95 1 at at ADP ajst-13403 95 2 1.1194 1.1194 NUM ajst-13403 95 3 - - SYM ajst-13403 95 4 1.2561s 1.2561s NUM ajst-13403 95 5 , , PUNCT ajst-13403 95 6 during during ADP ajst-13403 95 7 this this DET ajst-13403 95 8 period period NOUN ajst-13403 95 9 of of ADP ajst-13403 95 10 time time NOUN ajst-13403 95 11 , , PUNCT ajst-13403 95 12 the the DET ajst-13403 95 13 core core NOUN ajst-13403 95 14 was be AUX ajst-13403 95 15 squeezed squeeze VERB ajst-13403 95 16 by by ADP ajst-13403 95 17 the the DET ajst-13403 95 18 drill drill NOUN ajst-13403 95 19 pipe pipe NOUN ajst-13403 95 20 , , PUNCT ajst-13403 95 21 and and CCONJ ajst-13403 95 22 the the DET ajst-13403 95 23 maximum maximum ADJ ajst-13403 95 24 equivalent equivalent ADJ ajst-13403 95 25 stress stress NOUN ajst-13403 95 26 increased increase VERB ajst-13403 95 27 rapidly rapidly ADV ajst-13403 95 28 , , PUNCT ajst-13403 95 29 and and CCONJ ajst-13403 95 30 began begin VERB ajst-13403 95 31 to to PART ajst-13403 95 32 change change VERB ajst-13403 95 33 significantly significantly ADV ajst-13403 95 34 with with ADP ajst-13403 95 35 the the DET ajst-13403 95 36 increase increase NOUN ajst-13403 95 37 of of ADP ajst-13403 95 38 drilling drill VERB ajst-13403 95 39 fluid fluid ADJ ajst-13403 95 40 pressure pressure NOUN ajst-13403 95 41 . . PUNCT ajst-13403 96 1 at at ADP ajst-13403 96 2 1.2561 1.2561 NUM ajst-13403 96 3 - - SYM ajst-13403 96 4 1.8603s 1.8603s NUM ajst-13403 96 5 , , PUNCT ajst-13403 96 6 the the DET ajst-13403 96 7 maximum maximum ADJ ajst-13403 96 8 equivalent equivalent ADJ ajst-13403 96 9 stress stress NOUN ajst-13403 96 10 tends tend VERB ajst-13403 96 11 to to PART ajst-13403 96 12 be be AUX ajst-13403 96 13 stable stable ADJ ajst-13403 96 14 . . PUNCT ajst-13403 97 1 at at ADP ajst-13403 97 2 1.86032.4468s 1.86032.4468s NUM ajst-13403 97 3 , , PUNCT ajst-13403 97 4 because because SCONJ ajst-13403 97 5 the the DET ajst-13403 97 6 drill drill NOUN ajst-13403 97 7 pipe pipe NOUN ajst-13403 97 8 size size NOUN ajst-13403 97 9 began begin VERB ajst-13403 97 10 to to PART ajst-13403 97 11 decrease decrease VERB ajst-13403 97 12 and and CCONJ ajst-13403 97 13 the the DET ajst-13403 97 14 rubber rubber NOUN ajst-13403 97 15 core core NOUN ajst-13403 97 16 began begin VERB ajst-13403 97 17 to to PART ajst-13403 97 18 shrink shrink VERB ajst-13403 97 19 , , PUNCT ajst-13403 97 20 the the DET ajst-13403 97 21 maximum maximum ADJ ajst-13403 97 22 equivalent equivalent ADJ ajst-13403 97 23 stress stress NOUN ajst-13403 97 24 continued continue VERB ajst-13403 97 25 to to PART ajst-13403 97 26 increase increase VERB ajst-13403 97 27 significantly significantly ADV ajst-13403 97 28 during during ADP ajst-13403 97 29 this this DET ajst-13403 97 30 period period NOUN ajst-13403 97 31 , , PUNCT ajst-13403 97 32 and and CCONJ ajst-13403 97 33 the the PRON ajst-13403 97 34 greater great ADJ ajst-13403 97 35 the the DET ajst-13403 97 36 drilling drilling NOUN ajst-13403 97 37 fluid fluid NOUN ajst-13403 97 38 pressure pressure NOUN ajst-13403 97 39 was be AUX ajst-13403 97 40 , , PUNCT ajst-13403 97 41 the the DET ajst-13403 97 42 maximum maximum ADJ ajst-13403 97 43 equivalent equivalent ADJ ajst-13403 97 44 stress stress NOUN ajst-13403 97 45 mutation mutation NOUN ajst-13403 97 46 was be AUX ajst-13403 97 47 also also ADV ajst-13403 97 48 the the DET ajst-13403 97 49 largest large ADJ ajst-13403 97 50 . . PUNCT ajst-13403 98 1 after after ADP ajst-13403 98 2 that that PRON ajst-13403 98 3 , , PUNCT ajst-13403 98 4 the the DET ajst-13403 98 5 equivalent equivalent ADJ ajst-13403 98 6 stress stress NOUN ajst-13403 98 7 of of ADP ajst-13403 98 8 the the DET ajst-13403 98 9 core core NOUN ajst-13403 98 10 began begin VERB ajst-13403 98 11 to to PART ajst-13403 98 12 decrease decrease VERB ajst-13403 98 13 sharply sharply ADV ajst-13403 98 14 with with ADP ajst-13403 98 15 time time NOUN ajst-13403 98 16 , , PUNCT ajst-13403 98 17 but but CCONJ ajst-13403 98 18 the the DET ajst-13403 98 19 greater great ADJ ajst-13403 98 20 the the DET ajst-13403 98 21 drilling drilling NOUN ajst-13403 98 22 fluid fluid NOUN ajst-13403 98 23 pressure pressure NOUN ajst-13403 98 24 , , PUNCT ajst-13403 98 25 the the DET ajst-13403 98 26 equivalent equivalent ADJ ajst-13403 98 27 stress stress NOUN ajst-13403 98 28 of of ADP ajst-13403 98 29 the the DET ajst-13403 98 30 core core NOUN ajst-13403 98 31 was be AUX ajst-13403 98 32 still still ADV ajst-13403 98 33 the the DET ajst-13403 98 34 maximum maximum NOUN ajst-13403 98 35 . . PUNCT ajst-13403 99 1 therefore therefore ADV ajst-13403 99 2 , , PUNCT ajst-13403 99 3 the the DET ajst-13403 99 4 drilling drilling NOUN ajst-13403 99 5 fluid fluid NOUN ajst-13403 99 6 pressure pressure NOUN ajst-13403 99 7 significantly significantly ADV ajst-13403 99 8 affects affect VERB ajst-13403 99 9 the the DET ajst-13403 99 10 maximum maximum ADJ ajst-13403 99 11 equivalent equivalent ADJ ajst-13403 99 12 stress stress NOUN ajst-13403 99 13 of of ADP ajst-13403 99 14 the the DET ajst-13403 99 15 core core NOUN ajst-13403 99 16 , , PUNCT ajst-13403 99 17 and and CCONJ ajst-13403 99 18 the the DET ajst-13403 99 19 maximum maximum ADJ ajst-13403 99 20 equivalent equivalent ADJ ajst-13403 99 21 stress stress NOUN ajst-13403 99 22 appears appear VERB ajst-13403 99 23 in in ADP ajst-13403 99 24 the the DET ajst-13403 99 25 bubble bubble NOUN ajst-13403 99 26 position position NOUN ajst-13403 99 27 inside inside ADP ajst-13403 99 28 the the DET ajst-13403 99 29 core core NOUN ajst-13403 99 30 at at ADP ajst-13403 99 31 different different ADJ ajst-13403 99 32 times time NOUN ajst-13403 99 33 and and CCONJ ajst-13403 99 34 under under ADP ajst-13403 99 35 different different ADJ ajst-13403 99 36 drilling drilling NOUN ajst-13403 99 37 fluid fluid NOUN ajst-13403 99 38 pressures pressure NOUN ajst-13403 99 39 . . PUNCT ajst-13403 100 1 table table NOUN ajst-13403 100 2 1 1 NUM ajst-13403 100 3 . . PUNCT ajst-13403 100 4 comparative comparative ADJ ajst-13403 100 5 analysis analysis NOUN ajst-13403 100 6 of of ADP ajst-13403 100 7 the the DET ajst-13403 100 8 maximum maximum ADJ ajst-13403 100 9 equivalent equivalent ADJ ajst-13403 100 10 stress stress NOUN ajst-13403 100 11 of of ADP ajst-13403 100 12 the the DET ajst-13403 100 13 inner inner ADJ ajst-13403 100 14 bubble bubble NOUN ajst-13403 100 15 defect defect NOUN ajst-13403 100 16 core core NOUN ajst-13403 100 17 under under ADP ajst-13403 100 18 different different ADJ ajst-13403 100 19 drilling drilling NOUN ajst-13403 100 20 fluid fluid NOUN ajst-13403 100 21 pressures pressure NOUN ajst-13403 100 22 time time VERB ajst-13403 100 23 / / SYM ajst-13403 100 24 s s VERB ajst-13403 100 25 drilling drilling NOUN ajst-13403 100 26 fluid fluid NOUN ajst-13403 100 27 pressure pressure NOUN ajst-13403 100 28 1mpa 1mpa NUM ajst-13403 100 29 drilling drilling NOUN ajst-13403 100 30 fluid fluid NOUN ajst-13403 100 31 pressure pressure NOUN ajst-13403 100 32 2.5mpa 2.5mpa NUM ajst-13403 100 33 drilling drilling NOUN ajst-13403 100 34 fluid fluid NOUN ajst-13403 100 35 pressure pressure NOUN ajst-13403 100 36 4mpa 4mpa NUM ajst-13403 100 37 maximum maximum ADV ajst-13403 100 38 equivalent equivalent ADJ ajst-13403 100 39 stress stress NOUN ajst-13403 100 40 position position NOUN ajst-13403 100 41 0.21 0.21 NUM ajst-13403 100 42 0.4073 0.4073 NUM ajst-13403 100 43 0.79486 0.79486 NUM ajst-13403 100 44 1.1841 1.1841 NUM ajst-13403 100 45 inner inner ADJ ajst-13403 100 46 bubble bubble NOUN ajst-13403 100 47 1.1194 1.1194 NUM ajst-13403 100 48 1.5901 1.5901 NUM ajst-13403 100 49 2.6999 2.6999 NUM ajst-13403 100 50 3.3457 3.3457 NUM ajst-13403 100 51 inner inner ADJ ajst-13403 100 52 bubble bubble NOUN ajst-13403 100 53 1.2561 1.2561 NUM ajst-13403 100 54 24.649 24.649 NUM ajst-13403 100 55 25.03 25.03 NUM ajst-13403 100 56 26.835 26.835 NUM ajst-13403 100 57 inner inner ADJ ajst-13403 100 58 bubble bubble NOUN ajst-13403 100 59 1.8603 1.8603 NUM ajst-13403 100 60 17.829 17.829 NUM ajst-13403 100 61 20.576 20.576 NUM ajst-13403 100 62 19.181 19.181 NUM ajst-13403 100 63 inner inner ADJ ajst-13403 100 64 bubble bubble NOUN ajst-13403 100 65 2.4468 2.4468 NUM ajst-13403 100 66 26.487 26.487 NUM ajst-13403 100 67 31.787 31.787 NUM ajst-13403 100 68 47.836 47.836 NUM ajst-13403 100 69 inner inner ADJ ajst-13403 100 70 bubble bubble NOUN ajst-13403 100 71 3 3 NUM ajst-13403 100 72 5.1153 5.1153 NUM ajst-13403 100 73 9.4532 9.4532 NUM ajst-13403 100 74 14.666 14.666 NUM ajst-13403 100 75 inner inner ADJ ajst-13403 100 76 bubble bubble NOUN ajst-13403 100 77 4.2 4.2 NUM ajst-13403 100 78 . . PUNCT ajst-13403 101 1 analysis analysis NOUN ajst-13403 101 2 of of ADP ajst-13403 101 3 degumming degumme VERB ajst-13403 101 4 law law NOUN ajst-13403 101 5 of of ADP ajst-13403 101 6 metal metal NOUN ajst-13403 101 7 in in ADP ajst-13403 101 8 rubber rubber NOUN ajst-13403 101 9 core core NOUN ajst-13403 101 10 there there PRON ajst-13403 101 11 is be VERB ajst-13403 101 12 a a DET ajst-13403 101 13 fixed fix VERB ajst-13403 101 14 metal metal NOUN ajst-13403 101 15 plate plate NOUN ajst-13403 101 16 inside inside ADP ajst-13403 101 17 the the DET ajst-13403 101 18 rubber rubber NOUN ajst-13403 101 19 core core NOUN ajst-13403 101 20 of of ADP ajst-13403 101 21 rotary rotary ADJ ajst-13403 101 22 blowout blowout NOUN ajst-13403 101 23 preventer preventer NOUN ajst-13403 101 24 , , PUNCT ajst-13403 101 25 which which PRON ajst-13403 101 26 is be AUX ajst-13403 101 27 prone prone ADJ ajst-13403 101 28 to to ADP ajst-13403 101 29 metal metal NOUN ajst-13403 101 30 degumming degumming NOUN ajst-13403 101 31 in in ADP ajst-13403 101 32 the the DET ajst-13403 101 33 process process NOUN ajst-13403 101 34 of of ADP ajst-13403 101 35 rubber rubber NOUN ajst-13403 101 36 and and CCONJ ajst-13403 101 37 metal metal NOUN ajst-13403 101 38 vulcanization vulcanization NOUN ajst-13403 101 39 , , PUNCT ajst-13403 101 40 which which PRON ajst-13403 101 41 affects affect VERB ajst-13403 101 42 the the DET ajst-13403 101 43 safety safety NOUN ajst-13403 101 44 of of ADP ajst-13403 101 45 the the DET ajst-13403 101 46 rubber rubber NOUN ajst-13403 101 47 core core NOUN ajst-13403 101 48 . . PUNCT ajst-13403 102 1 as as SCONJ ajst-13403 102 2 shown show VERB ajst-13403 102 3 in in ADP ajst-13403 102 4 figure figure NOUN ajst-13403 102 5 6 6 NUM ajst-13403 102 6 , , PUNCT ajst-13403 102 7 label label NOUN ajst-13403 102 8 1 1 NUM ajst-13403 102 9 is be AUX ajst-13403 102 10 the the DET ajst-13403 102 11 degumming degumming NOUN ajst-13403 102 12 of of ADP ajst-13403 102 13 the the DET ajst-13403 102 14 right right ADJ ajst-13403 102 15 wall wall NOUN ajst-13403 102 16 of of ADP ajst-13403 102 17 the the DET ajst-13403 102 18 metal metal NOUN ajst-13403 102 19 ; ; PUNCT ajst-13403 102 20 label label NOUN ajst-13403 102 21 2 2 NUM ajst-13403 102 22 is be AUX ajst-13403 102 23 degumming degumme VERB ajst-13403 102 24 of of ADP ajst-13403 102 25 the the DET ajst-13403 102 26 underside underside NOUN ajst-13403 102 27 of of ADP ajst-13403 102 28 the the DET ajst-13403 102 29 metal metal NOUN ajst-13403 102 30 . . PUNCT ajst-13403 103 1 through through ADP ajst-13403 103 2 ansys ansys PROPN ajst-13403 103 3 simulation simulation PROPN ajst-13403 103 4 calculation calculation NOUN ajst-13403 103 5 , , PUNCT ajst-13403 103 6 the the DET ajst-13403 103 7 influence influence NOUN ajst-13403 103 8 of of ADP ajst-13403 103 9 metal metal NOUN ajst-13403 103 10 degumming degumming NOUN ajst-13403 103 11 at at ADP ajst-13403 103 12 different different ADJ ajst-13403 103 13 positions position NOUN ajst-13403 103 14 on on ADP ajst-13403 103 15 rubber rubber NOUN ajst-13403 103 16 core core NOUN ajst-13403 103 17 was be AUX ajst-13403 103 18 analyzed analyze VERB ajst-13403 103 19 . . PUNCT ajst-13403 104 1 figure figure NOUN ajst-13403 104 2 6 6 NUM ajst-13403 104 3 . . PUNCT ajst-13403 104 4 metal metal NOUN ajst-13403 104 5 degumming degumming NOUN ajst-13403 104 6 in in ADP ajst-13403 104 7 the the DET ajst-13403 104 8 core core NOUN ajst-13403 104 9 233 233 NUM ajst-13403 104 10 figure figure NOUN ajst-13403 104 11 7 7 NUM ajst-13403 104 12 . . PUNCT ajst-13403 104 13 undegummed undegumme VERB ajst-13403 104 14 core core NOUN ajst-13403 104 15 figure figure NOUN ajst-13403 104 16 7 7 NUM ajst-13403 104 17 shows show VERB ajst-13403 104 18 the the DET ajst-13403 104 19 calculation calculation NOUN ajst-13403 104 20 results result NOUN ajst-13403 104 21 of of ADP ajst-13403 104 22 no no DET ajst-13403 104 23 metal metal NOUN ajst-13403 104 24 degumming degumming NOUN ajst-13403 104 25 of of ADP ajst-13403 104 26 the the DET ajst-13403 104 27 rubber rubber NOUN ajst-13403 104 28 core core NOUN ajst-13403 104 29 . . PUNCT ajst-13403 105 1 at at ADP ajst-13403 105 2 different different ADJ ajst-13403 105 3 positions position NOUN ajst-13403 105 4 where where SCONJ ajst-13403 105 5 the the DET ajst-13403 105 6 rubber rubber NOUN ajst-13403 105 7 core core NOUN ajst-13403 105 8 contacts contact NOUN ajst-13403 105 9 the the DET ajst-13403 105 10 drill drill NOUN ajst-13403 105 11 pipe pipe NOUN ajst-13403 105 12 , , PUNCT ajst-13403 105 13 the the DET ajst-13403 105 14 maximum maximum ADJ ajst-13403 105 15 equivalent equivalent ADJ ajst-13403 105 16 stress stress NOUN ajst-13403 105 17 of of ADP ajst-13403 105 18 the the DET ajst-13403 105 19 rubber rubber NOUN ajst-13403 105 20 core core NOUN ajst-13403 105 21 is be AUX ajst-13403 105 22 in in ADP ajst-13403 105 23 the the DET ajst-13403 105 24 middle middle NOUN ajst-13403 105 25 of of ADP ajst-13403 105 26 the the DET ajst-13403 105 27 metal metal NOUN ajst-13403 105 28 , , PUNCT ajst-13403 105 29 and and CCONJ ajst-13403 105 30 the the DET ajst-13403 105 31 intact intact ADJ ajst-13403 105 32 state state NOUN ajst-13403 105 33 of of ADP ajst-13403 105 34 the the DET ajst-13403 105 35 rubber rubber NOUN ajst-13403 105 36 core core NOUN ajst-13403 105 37 changes change NOUN ajst-13403 105 38 under under ADP ajst-13403 105 39 environmental environmental ADJ ajst-13403 105 40 conditions condition NOUN ajst-13403 105 41 . . PUNCT ajst-13403 106 1 mainly mainly ADV ajst-13403 106 2 due due ADP ajst-13403 106 3 to to ADP ajst-13403 106 4 the the DET ajst-13403 106 5 rubber rubber NOUN ajst-13403 106 6 core core NOUN ajst-13403 106 7 rubber rubber NOUN ajst-13403 106 8 material material NOUN ajst-13403 106 9 is be AUX ajst-13403 106 10 squeezed squeeze VERB ajst-13403 106 11 and and CCONJ ajst-13403 106 12 expanded expand VERB ajst-13403 106 13 , , PUNCT ajst-13403 106 14 its its PRON ajst-13403 106 15 sealing sealing NOUN ajst-13403 106 16 effect effect NOUN ajst-13403 106 17 is be AUX ajst-13403 106 18 mainly mainly ADV ajst-13403 106 19 at at ADP ajst-13403 106 20 the the DET ajst-13403 106 21 bottom bottom NOUN ajst-13403 106 22 of of ADP ajst-13403 106 23 the the DET ajst-13403 106 24 rubber rubber NOUN ajst-13403 106 25 core core NOUN ajst-13403 106 26 , , PUNCT ajst-13403 106 27 and and CCONJ ajst-13403 106 28 the the DET ajst-13403 106 29 force force NOUN ajst-13403 106 30 on on ADP ajst-13403 106 31 the the DET ajst-13403 106 32 top top NOUN ajst-13403 106 33 of of ADP ajst-13403 106 34 the the DET ajst-13403 106 35 rubber rubber NOUN ajst-13403 106 36 core core NOUN ajst-13403 106 37 is be AUX ajst-13403 106 38 less less ADJ ajst-13403 106 39 . . PUNCT ajst-13403 107 1 figure figure VERB ajst-13403 107 2 8 8 NUM ajst-13403 107 3 . . PUNCT ajst-13403 108 1 metal metal NOUN ajst-13403 108 2 degumming degumming NOUN ajst-13403 108 3 on on ADP ajst-13403 108 4 the the DET ajst-13403 108 5 right right ADJ ajst-13403 108 6 side side NOUN ajst-13403 108 7 of of ADP ajst-13403 108 8 the the DET ajst-13403 108 9 rubber rubber NOUN ajst-13403 108 10 core core NOUN ajst-13403 108 11 figure figure NOUN ajst-13403 108 12 8 8 NUM ajst-13403 108 13 shows show VERB ajst-13403 108 14 the the DET ajst-13403 108 15 calculation calculation NOUN ajst-13403 108 16 results result NOUN ajst-13403 108 17 of of ADP ajst-13403 108 18 metal metal NOUN ajst-13403 108 19 degumming degumming NOUN ajst-13403 108 20 on on ADP ajst-13403 108 21 the the DET ajst-13403 108 22 right right ADJ ajst-13403 108 23 side side NOUN ajst-13403 108 24 of of ADP ajst-13403 108 25 the the DET ajst-13403 108 26 rubber rubber NOUN ajst-13403 108 27 core core NOUN ajst-13403 108 28 . . PUNCT ajst-13403 109 1 at at ADP ajst-13403 109 2 different different ADJ ajst-13403 109 3 positions position NOUN ajst-13403 109 4 where where SCONJ ajst-13403 109 5 the the DET ajst-13403 109 6 rubber rubber NOUN ajst-13403 109 7 core core NOUN ajst-13403 109 8 and and CCONJ ajst-13403 109 9 drill drill NOUN ajst-13403 109 10 pipe pipe NOUN ajst-13403 109 11 contact contact NOUN ajst-13403 109 12 , , PUNCT ajst-13403 109 13 the the DET ajst-13403 109 14 maximum maximum ADJ ajst-13403 109 15 equivalent equivalent ADJ ajst-13403 109 16 stress stress NOUN ajst-13403 109 17 of of ADP ajst-13403 109 18 the the DET ajst-13403 109 19 rubber rubber NOUN ajst-13403 109 20 core core NOUN ajst-13403 109 21 changes change NOUN ajst-13403 109 22 and and CCONJ ajst-13403 109 23 is be AUX ajst-13403 109 24 not not PART ajst-13403 109 25 concentrated concentrate VERB ajst-13403 109 26 in in ADP ajst-13403 109 27 the the DET ajst-13403 109 28 middle middle ADJ ajst-13403 109 29 part part NOUN ajst-13403 109 30 of of ADP ajst-13403 109 31 the the DET ajst-13403 109 32 metal metal NOUN ajst-13403 109 33 . . PUNCT ajst-13403 110 1 due due ADP ajst-13403 110 2 to to ADP ajst-13403 110 3 the the DET ajst-13403 110 4 degumming degumming NOUN ajst-13403 110 5 on on ADP ajst-13403 110 6 the the DET ajst-13403 110 7 right right ADJ ajst-13403 110 8 side side NOUN ajst-13403 110 9 of of ADP ajst-13403 110 10 the the DET ajst-13403 110 11 rubber rubber NOUN ajst-13403 110 12 core core NOUN ajst-13403 110 13 , , PUNCT ajst-13403 110 14 the the DET ajst-13403 110 15 metal metal NOUN ajst-13403 110 16 begins begin VERB ajst-13403 110 17 to to PART ajst-13403 110 18 squeeze squeeze VERB ajst-13403 110 19 the the DET ajst-13403 110 20 rubber rubber NOUN ajst-13403 110 21 core core NOUN ajst-13403 110 22 , , PUNCT ajst-13403 110 23 resulting result VERB ajst-13403 110 24 in in ADP ajst-13403 110 25 stress stress ADJ ajst-13403 110 26 concentration concentration NOUN ajst-13403 110 27 on on ADP ajst-13403 110 28 the the DET ajst-13403 110 29 left left ADJ ajst-13403 110 30 side side NOUN ajst-13403 110 31 of of ADP ajst-13403 110 32 the the DET ajst-13403 110 33 rubber rubber NOUN ajst-13403 110 34 core core NOUN ajst-13403 110 35 , , PUNCT ajst-13403 110 36 and and CCONJ ajst-13403 110 37 the the DET ajst-13403 110 38 gap gap NOUN ajst-13403 110 39 between between ADP ajst-13403 110 40 the the DET ajst-13403 110 41 rubber rubber NOUN ajst-13403 110 42 core core NOUN ajst-13403 110 43 and and CCONJ ajst-13403 110 44 the the DET ajst-13403 110 45 metal metal NOUN ajst-13403 110 46 is be AUX ajst-13403 110 47 obviously obviously ADV ajst-13403 110 48 seen see VERB ajst-13403 110 49 on on ADP ajst-13403 110 50 the the DET ajst-13403 110 51 right right ADJ ajst-13403 110 52 side side NOUN ajst-13403 110 53 . . PUNCT ajst-13403 111 1 figure figure NOUN ajst-13403 111 2 9 9 NUM ajst-13403 111 3 . . PUNCT ajst-13403 112 1 degumming degumme VERB ajst-13403 112 2 of of ADP ajst-13403 112 3 metal metal NOUN ajst-13403 112 4 on on ADP ajst-13403 112 5 the the DET ajst-13403 112 6 lower low ADJ ajst-13403 112 7 side side NOUN ajst-13403 112 8 of of ADP ajst-13403 112 9 rubber rubber NOUN ajst-13403 112 10 core core NOUN ajst-13403 112 11 figure figure NOUN ajst-13403 112 12 9 9 NUM ajst-13403 112 13 shows show VERB ajst-13403 112 14 the the DET ajst-13403 112 15 calculation calculation NOUN ajst-13403 112 16 results result NOUN ajst-13403 112 17 of of ADP ajst-13403 112 18 metal metal NOUN ajst-13403 112 19 degumming degumming NOUN ajst-13403 112 20 on on ADP ajst-13403 112 21 the the DET ajst-13403 112 22 lower low ADJ ajst-13403 112 23 side side NOUN ajst-13403 112 24 of of ADP ajst-13403 112 25 the the DET ajst-13403 112 26 rubber rubber NOUN ajst-13403 112 27 core core NOUN ajst-13403 112 28 . . PUNCT ajst-13403 113 1 at at ADP ajst-13403 113 2 different different ADJ ajst-13403 113 3 positions position NOUN ajst-13403 113 4 where where SCONJ ajst-13403 113 5 the the DET ajst-13403 113 6 rubber rubber NOUN ajst-13403 113 7 core core NOUN ajst-13403 113 8 and and CCONJ ajst-13403 113 9 the the DET ajst-13403 113 10 drill drill NOUN ajst-13403 113 11 pipe pipe NOUN ajst-13403 113 12 contact contact NOUN ajst-13403 113 13 , , PUNCT ajst-13403 113 14 the the DET ajst-13403 113 15 maximum maximum ADJ ajst-13403 113 16 equivalent equivalent ADJ ajst-13403 113 17 stress stress NOUN ajst-13403 113 18 of of ADP ajst-13403 113 19 the the DET ajst-13403 113 20 rubber rubber NOUN ajst-13403 113 21 core core NOUN ajst-13403 113 22 changes change NOUN ajst-13403 113 23 and and CCONJ ajst-13403 113 24 is be AUX ajst-13403 113 25 not not PART ajst-13403 113 26 concentrated concentrate VERB ajst-13403 113 27 in in ADP ajst-13403 113 28 the the DET ajst-13403 113 29 middle middle ADJ ajst-13403 113 30 part part NOUN ajst-13403 113 31 of of ADP ajst-13403 113 32 the the DET ajst-13403 113 33 metal metal NOUN ajst-13403 113 34 . . PUNCT ajst-13403 114 1 due due ADP ajst-13403 114 2 to to ADP ajst-13403 114 3 the the DET ajst-13403 114 4 degumming degumming NOUN ajst-13403 114 5 on on ADP ajst-13403 114 6 the the DET ajst-13403 114 7 lower low ADJ ajst-13403 114 8 side side NOUN ajst-13403 114 9 of of ADP ajst-13403 114 10 the the DET ajst-13403 114 11 rubber rubber NOUN ajst-13403 114 12 core core NOUN ajst-13403 114 13 , , PUNCT ajst-13403 114 14 the the DET ajst-13403 114 15 metal metal NOUN ajst-13403 114 16 234 234 NUM ajst-13403 114 17 begins begin VERB ajst-13403 114 18 to to PART ajst-13403 114 19 squeeze squeeze VERB ajst-13403 114 20 the the DET ajst-13403 114 21 rubber rubber NOUN ajst-13403 114 22 core core NOUN ajst-13403 114 23 , , PUNCT ajst-13403 114 24 resulting result VERB ajst-13403 114 25 in in ADP ajst-13403 114 26 stress stress ADJ ajst-13403 114 27 concentration concentration NOUN ajst-13403 114 28 on on ADP ajst-13403 114 29 the the DET ajst-13403 114 30 left left ADJ ajst-13403 114 31 side side NOUN ajst-13403 114 32 of of ADP ajst-13403 114 33 the the DET ajst-13403 114 34 rubber rubber NOUN ajst-13403 114 35 core core NOUN ajst-13403 114 36 , , PUNCT ajst-13403 114 37 and and CCONJ ajst-13403 114 38 the the DET ajst-13403 114 39 gap gap NOUN ajst-13403 114 40 between between ADP ajst-13403 114 41 the the DET ajst-13403 114 42 rubber rubber NOUN ajst-13403 114 43 core core NOUN ajst-13403 114 44 and and CCONJ ajst-13403 114 45 the the DET ajst-13403 114 46 metal metal NOUN ajst-13403 114 47 is be AUX ajst-13403 114 48 obviously obviously ADV ajst-13403 114 49 seen see VERB ajst-13403 114 50 on on ADP ajst-13403 114 51 the the DET ajst-13403 114 52 lower low ADJ ajst-13403 114 53 side side NOUN ajst-13403 114 54 . . PUNCT ajst-13403 115 1 figure figure NOUN ajst-13403 115 2 . . PUNCT ajst-13403 116 1 8 8 NUM ajst-13403 116 2 and and CCONJ ajst-13403 116 3 figure figure NOUN ajst-13403 116 4 . . PUNCT ajst-13403 117 1 9 9 NUM ajst-13403 117 2 are be AUX ajst-13403 117 3 the the DET ajst-13403 117 4 calculation calculation NOUN ajst-13403 117 5 results result NOUN ajst-13403 117 6 of of ADP ajst-13403 117 7 the the DET ajst-13403 117 8 degumming degumming NOUN ajst-13403 117 9 of of ADP ajst-13403 117 10 the the DET ajst-13403 117 11 core core NOUN ajst-13403 117 12 of of ADP ajst-13403 117 13 the the DET ajst-13403 117 14 rotary rotary ADJ ajst-13403 117 15 blowout blowout NOUN ajst-13403 117 16 preventer preventer NOUN ajst-13403 117 17 . . PUNCT ajst-13403 118 1 it it PRON ajst-13403 118 2 can can AUX ajst-13403 118 3 be be AUX ajst-13403 118 4 seen see VERB ajst-13403 118 5 that that SCONJ ajst-13403 118 6 the the DET ajst-13403 118 7 degumming degumming NOUN ajst-13403 118 8 positions position NOUN ajst-13403 118 9 are be AUX ajst-13403 118 10 placed place VERB ajst-13403 118 11 in in ADP ajst-13403 118 12 the the DET ajst-13403 118 13 contact contact NOUN ajst-13403 118 14 position position NOUN ajst-13403 118 15 between between ADP ajst-13403 118 16 the the DET ajst-13403 118 17 metal metal NOUN ajst-13403 118 18 and and CCONJ ajst-13403 118 19 the the DET ajst-13403 118 20 core core NOUN ajst-13403 118 21 . . PUNCT ajst-13403 119 1 this this PRON ajst-13403 119 2 is be AUX ajst-13403 119 3 because because SCONJ ajst-13403 119 4 the the DET ajst-13403 119 5 bottom bottom NOUN ajst-13403 119 6 of of ADP ajst-13403 119 7 the the DET ajst-13403 119 8 rubber rubber NOUN ajst-13403 119 9 core core NOUN ajst-13403 119 10 is be AUX ajst-13403 119 11 subject subject ADJ ajst-13403 119 12 to to ADP ajst-13403 119 13 the the DET ajst-13403 119 14 upward upward ADJ ajst-13403 119 15 translation translation NOUN ajst-13403 119 16 driving driving NOUN ajst-13403 119 17 force force NOUN ajst-13403 119 18 of of ADP ajst-13403 119 19 the the DET ajst-13403 119 20 piston piston NOUN ajst-13403 119 21 , , PUNCT ajst-13403 119 22 the the DET ajst-13403 119 23 inner inner ADJ ajst-13403 119 24 surface surface NOUN ajst-13403 119 25 of of ADP ajst-13403 119 26 the the DET ajst-13403 119 27 top top ADJ ajst-13403 119 28 cover cover NOUN ajst-13403 119 29 exerts exert VERB ajst-13403 119 30 a a DET ajst-13403 119 31 pressure pressure NOUN ajst-13403 119 32 on on ADP ajst-13403 119 33 the the DET ajst-13403 119 34 rubber rubber NOUN ajst-13403 119 35 core core NOUN ajst-13403 119 36 pointing pointing NOUN ajst-13403 119 37 to to ADP ajst-13403 119 38 the the DET ajst-13403 119 39 center center NOUN ajst-13403 119 40 of of ADP ajst-13403 119 41 the the DET ajst-13403 119 42 sphere sphere NOUN ajst-13403 119 43 and and CCONJ ajst-13403 119 44 the the DET ajst-13403 119 45 friction friction NOUN ajst-13403 119 46 force force NOUN ajst-13403 119 47 along along ADP ajst-13403 119 48 the the DET ajst-13403 119 49 tangent tangent ADJ ajst-13403 119 50 line line NOUN ajst-13403 119 51 of of ADP ajst-13403 119 52 the the DET ajst-13403 119 53 sphere sphere NOUN ajst-13403 119 54 . . PUNCT ajst-13403 120 1 when when SCONJ ajst-13403 120 2 the the DET ajst-13403 120 3 rubber rubber NOUN ajst-13403 120 4 core core NOUN ajst-13403 120 5 is be AUX ajst-13403 120 6 in in ADP ajst-13403 120 7 contact contact NOUN ajst-13403 120 8 with with ADP ajst-13403 120 9 the the DET ajst-13403 120 10 drilling drilling NOUN ajst-13403 120 11 tool tool NOUN ajst-13403 120 12 , , PUNCT ajst-13403 120 13 the the DET ajst-13403 120 14 inner inner ADJ ajst-13403 120 15 surface surface NOUN ajst-13403 120 16 of of ADP ajst-13403 120 17 the the DET ajst-13403 120 18 rubber rubber NOUN ajst-13403 120 19 core core NOUN ajst-13403 120 20 produces produce VERB ajst-13403 120 21 contact contact NOUN ajst-13403 120 22 pressure pressure NOUN ajst-13403 120 23 , , PUNCT ajst-13403 120 24 which which PRON ajst-13403 120 25 plays play VERB ajst-13403 120 26 a a DET ajst-13403 120 27 role role NOUN ajst-13403 120 28 of of ADP ajst-13403 120 29 sealing sealing NOUN ajst-13403 120 30 or or CCONJ ajst-13403 120 31 self self NOUN ajst-13403 120 32 - - PUNCT ajst-13403 120 33 sealing sealing NOUN ajst-13403 120 34 . . PUNCT ajst-13403 121 1 under under ADP ajst-13403 121 2 the the DET ajst-13403 121 3 action action NOUN ajst-13403 121 4 of of ADP ajst-13403 121 5 the the DET ajst-13403 121 6 above above ADJ ajst-13403 121 7 forces force NOUN ajst-13403 121 8 , , PUNCT ajst-13403 121 9 the the DET ajst-13403 121 10 inner inner ADJ ajst-13403 121 11 surface surface NOUN ajst-13403 121 12 of of ADP ajst-13403 121 13 the the DET ajst-13403 121 14 rubber rubber NOUN ajst-13403 121 15 core core NOUN ajst-13403 121 16 will will AUX ajst-13403 121 17 shrink shrink VERB ajst-13403 121 18 and and CCONJ ajst-13403 121 19 deform deform VERB ajst-13403 121 20 , , PUNCT ajst-13403 121 21 and and CCONJ ajst-13403 121 22 the the DET ajst-13403 121 23 upper upper ADJ ajst-13403 121 24 surface surface NOUN ajst-13403 121 25 of of ADP ajst-13403 121 26 the the DET ajst-13403 121 27 rubber rubber NOUN ajst-13403 121 28 core core NOUN ajst-13403 121 29 will will AUX ajst-13403 121 30 show show VERB ajst-13403 121 31 a a DET ajst-13403 121 32 bulge bulge NOUN ajst-13403 121 33 shape shape NOUN ajst-13403 121 34 , , PUNCT ajst-13403 121 35 and and CCONJ ajst-13403 121 36 the the DET ajst-13403 121 37 farther far ADV ajst-13403 121 38 away away ADV ajst-13403 121 39 from from ADP ajst-13403 121 40 the the DET ajst-13403 121 41 support support NOUN ajst-13403 121 42 reinforcement reinforcement NOUN ajst-13403 121 43 , , PUNCT ajst-13403 121 44 the the PRON ajst-13403 121 45 larger large ADJ ajst-13403 121 46 the the DET ajst-13403 121 47 bulge bulge NOUN ajst-13403 121 48 deformation deformation NOUN ajst-13403 121 49 will will AUX ajst-13403 121 50 be be AUX ajst-13403 121 51 . . PUNCT ajst-13403 122 1 due due ADP ajst-13403 122 2 to to ADP ajst-13403 122 3 the the DET ajst-13403 122 4 influence influence NOUN ajst-13403 122 5 of of ADP ajst-13403 122 6 the the DET ajst-13403 122 7 support support NOUN ajst-13403 122 8 reinforcement reinforcement NOUN ajst-13403 122 9 , , PUNCT ajst-13403 122 10 the the DET ajst-13403 122 11 tensile tensile NOUN ajst-13403 122 12 stress stress NOUN ajst-13403 122 13 at at ADP ajst-13403 122 14 the the DET ajst-13403 122 15 junction junction NOUN ajst-13403 122 16 of of ADP ajst-13403 122 17 the the DET ajst-13403 122 18 upper upper ADJ ajst-13403 122 19 surface surface NOUN ajst-13403 122 20 of of ADP ajst-13403 122 21 the the DET ajst-13403 122 22 rubber rubber NOUN ajst-13403 122 23 core core NOUN ajst-13403 122 24 and and CCONJ ajst-13403 122 25 the the DET ajst-13403 122 26 inner inner ADJ ajst-13403 122 27 surface surface NOUN ajst-13403 122 28 of of ADP ajst-13403 122 29 the the DET ajst-13403 122 30 cylinder cylinder NOUN ajst-13403 122 31 is be AUX ajst-13403 122 32 the the DET ajst-13403 122 33 largest large ADJ ajst-13403 122 34 . . PUNCT ajst-13403 123 1 when when SCONJ ajst-13403 123 2 the the DET ajst-13403 123 3 tensile tensile NOUN ajst-13403 123 4 stress stress NOUN ajst-13403 123 5 exceeds exceed VERB ajst-13403 123 6 the the DET ajst-13403 123 7 limit limit NOUN ajst-13403 123 8 of of ADP ajst-13403 123 9 the the DET ajst-13403 123 10 core core NOUN ajst-13403 123 11 material material NOUN ajst-13403 123 12 , , PUNCT ajst-13403 123 13 the the DET ajst-13403 123 14 upper upper ADJ ajst-13403 123 15 surface surface NOUN ajst-13403 123 16 of of ADP ajst-13403 123 17 the the DET ajst-13403 123 18 rubber rubber NOUN ajst-13403 123 19 core core NOUN ajst-13403 123 20 will will AUX ajst-13403 123 21 produce produce VERB ajst-13403 123 22 radial radial ADJ ajst-13403 123 23 cracks crack NOUN ajst-13403 123 24 and and CCONJ ajst-13403 123 25 circumferential circumferential ADJ ajst-13403 123 26 cracks crack NOUN ajst-13403 123 27 . . PUNCT ajst-13403 124 1 in in ADP ajst-13403 124 2 addition addition NOUN ajst-13403 124 3 , , PUNCT ajst-13403 124 4 the the DET ajst-13403 124 5 part part NOUN ajst-13403 124 6 of of ADP ajst-13403 124 7 the the DET ajst-13403 124 8 rubber rubber NOUN ajst-13403 124 9 core core NOUN ajst-13403 124 10 and and CCONJ ajst-13403 124 11 the the DET ajst-13403 124 12 support support NOUN ajst-13403 124 13 bar bar NOUN ajst-13403 124 14 contact contact NOUN ajst-13403 124 15 with with ADP ajst-13403 124 16 the the DET ajst-13403 124 17 piston piston NOUN ajst-13403 124 18 ring ring NOUN ajst-13403 124 19 , , PUNCT ajst-13403 124 20 due due ADP ajst-13403 124 21 to to ADP ajst-13403 124 22 the the DET ajst-13403 124 23 sudden sudden ADJ ajst-13403 124 24 change change NOUN ajst-13403 124 25 of of ADP ajst-13403 124 26 material material NOUN ajst-13403 124 27 properties property NOUN ajst-13403 124 28 , , PUNCT ajst-13403 124 29 will will AUX ajst-13403 124 30 produce produce VERB ajst-13403 124 31 stress stress NOUN ajst-13403 124 32 concentration concentration NOUN ajst-13403 124 33 and and CCONJ ajst-13403 124 34 large large ADJ ajst-13403 124 35 shear shear NOUN ajst-13403 124 36 stress stress NOUN ajst-13403 124 37 . . PUNCT ajst-13403 125 1 when when SCONJ ajst-13403 125 2 drilling drilling NOUN ajst-13403 125 3 , , PUNCT ajst-13403 125 4 an an DET ajst-13403 125 5 upward upward ADJ ajst-13403 125 6 friction friction NOUN ajst-13403 125 7 force force NOUN ajst-13403 125 8 is be AUX ajst-13403 125 9 added add VERB ajst-13403 125 10 to to ADP ajst-13403 125 11 the the DET ajst-13403 125 12 inner inner ADJ ajst-13403 125 13 surface surface NOUN ajst-13403 125 14 of of ADP ajst-13403 125 15 the the DET ajst-13403 125 16 rubber rubber NOUN ajst-13403 125 17 core core NOUN ajst-13403 125 18 . . PUNCT ajst-13403 126 1 in in ADP ajst-13403 126 2 this this DET ajst-13403 126 3 state state NOUN ajst-13403 126 4 , , PUNCT ajst-13403 126 5 when when SCONJ ajst-13403 126 6 the the DET ajst-13403 126 7 friction friction NOUN ajst-13403 126 8 is be AUX ajst-13403 126 9 large large ADJ ajst-13403 126 10 , , PUNCT ajst-13403 126 11 there there PRON ajst-13403 126 12 will will AUX ajst-13403 126 13 be be AUX ajst-13403 126 14 large large ADJ ajst-13403 126 15 shear shear NOUN ajst-13403 126 16 stress stress NOUN ajst-13403 126 17 or or CCONJ ajst-13403 126 18 friction friction NOUN ajst-13403 126 19 and and CCONJ ajst-13403 126 20 wear wear VERB ajst-13403 126 21 phenomenon phenomenon NOUN ajst-13403 126 22 on on ADP ajst-13403 126 23 the the DET ajst-13403 126 24 rubber rubber NOUN ajst-13403 126 25 core core NOUN ajst-13403 126 26 . . PUNCT ajst-13403 127 1 if if SCONJ ajst-13403 127 2 the the DET ajst-13403 127 3 drilling drilling NOUN ajst-13403 127 4 operation operation NOUN ajst-13403 127 5 is be AUX ajst-13403 127 6 repeated repeat VERB ajst-13403 127 7 , , PUNCT ajst-13403 127 8 the the DET ajst-13403 127 9 rubber rubber NOUN ajst-13403 127 10 core core NOUN ajst-13403 127 11 will will AUX ajst-13403 127 12 also also ADV ajst-13403 127 13 appear appear VERB ajst-13403 127 14 fatigue fatigue NOUN ajst-13403 127 15 alternating alternate VERB ajst-13403 127 16 stress stress NOUN ajst-13403 127 17 . . PUNCT ajst-13403 128 1 due due ADP ajst-13403 128 2 to to ADP ajst-13403 128 3 the the DET ajst-13403 128 4 sudden sudden ADJ ajst-13403 128 5 change change NOUN ajst-13403 128 6 of of ADP ajst-13403 128 7 material material NOUN ajst-13403 128 8 properties property NOUN ajst-13403 128 9 at at ADP ajst-13403 128 10 the the DET ajst-13403 128 11 contact contact NOUN ajst-13403 128 12 point point NOUN ajst-13403 128 13 between between ADP ajst-13403 128 14 the the DET ajst-13403 128 15 rubber rubber NOUN ajst-13403 128 16 core core NOUN ajst-13403 128 17 and and CCONJ ajst-13403 128 18 the the DET ajst-13403 128 19 metal metal NOUN ajst-13403 128 20 , , PUNCT ajst-13403 128 21 there there PRON ajst-13403 128 22 is be VERB ajst-13403 128 23 an an DET ajst-13403 128 24 obvious obvious ADJ ajst-13403 128 25 stress stress NOUN ajst-13403 128 26 concentration concentration NOUN ajst-13403 128 27 in in ADP ajst-13403 128 28 the the DET ajst-13403 128 29 rubber rubber NOUN ajst-13403 128 30 core core NOUN ajst-13403 128 31 . . PUNCT ajst-13403 129 1 when when SCONJ ajst-13403 129 2 the the DET ajst-13403 129 3 stress stress NOUN ajst-13403 129 4 exceeds exceed VERB ajst-13403 129 5 the the DET ajst-13403 129 6 ultimate ultimate ADJ ajst-13403 129 7 stress stress NOUN ajst-13403 129 8 of of ADP ajst-13403 129 9 the the DET ajst-13403 129 10 rubber rubber NOUN ajst-13403 129 11 material material NOUN ajst-13403 129 12 , , PUNCT ajst-13403 129 13 the the DET ajst-13403 129 14 rubber rubber NOUN ajst-13403 129 15 core core NOUN ajst-13403 129 16 degumming degumme VERB ajst-13403 129 17 cracking cracking NOUN ajst-13403 129 18 will will AUX ajst-13403 129 19 occur occur VERB ajst-13403 129 20 . . PUNCT ajst-13403 130 1 the the DET ajst-13403 130 2 rubber rubber NOUN ajst-13403 130 3 is be AUX ajst-13403 130 4 extruded extrude VERB ajst-13403 130 5 from from ADP ajst-13403 130 6 the the DET ajst-13403 130 7 skeleton skeleton NOUN ajst-13403 130 8 , , PUNCT ajst-13403 130 9 and and CCONJ ajst-13403 130 10 there there PRON ajst-13403 130 11 is be VERB ajst-13403 130 12 a a DET ajst-13403 130 13 binding bind VERB ajst-13403 130 14 effect effect NOUN ajst-13403 130 15 of of ADP ajst-13403 130 16 tearing tear VERB ajst-13403 130 17 each each DET ajst-13403 130 18 other other ADJ ajst-13403 130 19 inside inside ADV ajst-13403 130 20 . . PUNCT ajst-13403 131 1 with with ADP ajst-13403 131 2 the the DET ajst-13403 131 3 increase increase NOUN ajst-13403 131 4 of of ADP ajst-13403 131 5 sealing seal VERB ajst-13403 131 6 times time NOUN ajst-13403 131 7 , , PUNCT ajst-13403 131 8 the the DET ajst-13403 131 9 rubber rubber NOUN ajst-13403 131 10 is be AUX ajst-13403 131 11 prone prone ADJ ajst-13403 131 12 to to ADP ajst-13403 131 13 fatigue fatigue NOUN ajst-13403 131 14 cracks crack NOUN ajst-13403 131 15 . . PUNCT ajst-13403 132 1 eventually eventually ADV ajst-13403 132 2 they they PRON ajst-13403 132 3 tear tear VERB ajst-13403 132 4 each each DET ajst-13403 132 5 other other ADJ ajst-13403 132 6 apart apart ADV ajst-13403 132 7 . . PUNCT ajst-13403 133 1 in in ADP ajst-13403 133 2 the the DET ajst-13403 133 3 process process NOUN ajst-13403 133 4 of of ADP ajst-13403 133 5 high high ADJ ajst-13403 133 6 temperature temperature NOUN ajst-13403 133 7 rotation rotation NOUN ajst-13403 133 8 , , PUNCT ajst-13403 133 9 rubber rubber NOUN ajst-13403 133 10 expands expand VERB ajst-13403 133 11 when when SCONJ ajst-13403 133 12 heated heat VERB ajst-13403 133 13 . . PUNCT ajst-13403 134 1 due due ADP ajst-13403 134 2 to to ADP ajst-13403 134 3 the the DET ajst-13403 134 4 high high ADJ ajst-13403 134 5 temperature temperature NOUN ajst-13403 134 6 aging aging NOUN ajst-13403 134 7 of of ADP ajst-13403 134 8 rubber rubber NOUN ajst-13403 134 9 core core NOUN ajst-13403 134 10 material material NOUN ajst-13403 134 11 , , PUNCT ajst-13403 134 12 its its PRON ajst-13403 134 13 high high ADJ ajst-13403 134 14 elastic elastic ADJ ajst-13403 134 15 properties property NOUN ajst-13403 134 16 and and CCONJ ajst-13403 134 17 mechanical mechanical ADJ ajst-13403 134 18 properties property NOUN ajst-13403 134 19 are be AUX ajst-13403 134 20 changed change VERB ajst-13403 134 21 , , PUNCT ajst-13403 134 22 resulting result VERB ajst-13403 134 23 in in ADP ajst-13403 134 24 cracking cracking NOUN ajst-13403 134 25 , , PUNCT ajst-13403 134 26 embrittlement embrittlement NOUN ajst-13403 134 27 and and CCONJ ajst-13403 134 28 damage damage NOUN ajst-13403 134 29 at at ADP ajst-13403 134 30 the the DET ajst-13403 134 31 contact contact NOUN ajst-13403 134 32 position position NOUN ajst-13403 134 33 between between ADP ajst-13403 134 34 rubber rubber NOUN ajst-13403 134 35 core core NOUN ajst-13403 134 36 and and CCONJ ajst-13403 134 37 metal metal NOUN ajst-13403 134 38 . . PUNCT ajst-13403 135 1 due due ADP ajst-13403 135 2 to to ADP ajst-13403 135 3 the the DET ajst-13403 135 4 excessive excessive ADJ ajst-13403 135 5 permanent permanent ADJ ajst-13403 135 6 deformation deformation NOUN ajst-13403 135 7 and and CCONJ ajst-13403 135 8 serious serious ADJ ajst-13403 135 9 elastic elastic ADJ ajst-13403 135 10 hysteresis hysteresis NOUN ajst-13403 135 11 of of ADP ajst-13403 135 12 the the DET ajst-13403 135 13 rubber rubber NOUN ajst-13403 135 14 core core NOUN ajst-13403 135 15 , , PUNCT ajst-13403 135 16 the the DET ajst-13403 135 17 initial initial ADJ ajst-13403 135 18 sealing sealing NOUN ajst-13403 135 19 pressure pressure NOUN ajst-13403 135 20 of of ADP ajst-13403 135 21 the the DET ajst-13403 135 22 rubber rubber NOUN ajst-13403 135 23 core core NOUN ajst-13403 135 24 is be AUX ajst-13403 135 25 too too ADV ajst-13403 135 26 low low ADJ ajst-13403 135 27 , , PUNCT ajst-13403 135 28 and and CCONJ ajst-13403 135 29 then then ADV ajst-13403 135 30 the the DET ajst-13403 135 31 failure failure NOUN ajst-13403 135 32 occurs occur VERB ajst-13403 135 33 . . PUNCT ajst-13403 136 1 due due ADP ajst-13403 136 2 to to ADP ajst-13403 136 3 the the DET ajst-13403 136 4 absence absence NOUN ajst-13403 136 5 of of ADP ajst-13403 136 6 lubricants lubricant NOUN ajst-13403 136 7 or or CCONJ ajst-13403 136 8 poor poor ADJ ajst-13403 136 9 lubrication lubrication NOUN ajst-13403 136 10 conditions condition NOUN ajst-13403 136 11 , , PUNCT ajst-13403 136 12 there there PRON ajst-13403 136 13 will will AUX ajst-13403 136 14 be be AUX ajst-13403 136 15 a a DET ajst-13403 136 16 very very ADV ajst-13403 136 17 serious serious ADJ ajst-13403 136 18 friction friction NOUN ajst-13403 136 19 heat heat NOUN ajst-13403 136 20 generation generation NOUN ajst-13403 136 21 phenomenon phenomenon NOUN ajst-13403 136 22 between between ADP ajst-13403 136 23 the the DET ajst-13403 136 24 rubber rubber NOUN ajst-13403 136 25 core core NOUN ajst-13403 136 26 and and CCONJ ajst-13403 136 27 the the DET ajst-13403 136 28 drilling drilling NOUN ajst-13403 136 29 tool tool NOUN ajst-13403 136 30 , , PUNCT ajst-13403 136 31 resulting result VERB ajst-13403 136 32 in in ADP ajst-13403 136 33 local local ADJ ajst-13403 136 34 overheating overheating NOUN ajst-13403 136 35 of of ADP ajst-13403 136 36 the the DET ajst-13403 136 37 inner inner ADJ ajst-13403 136 38 surface surface NOUN ajst-13403 136 39 of of ADP ajst-13403 136 40 the the DET ajst-13403 136 41 rubber rubber NOUN ajst-13403 136 42 core core NOUN ajst-13403 136 43 , , PUNCT ajst-13403 136 44 changing change VERB ajst-13403 136 45 the the DET ajst-13403 136 46 high high ADJ ajst-13403 136 47 elastic elastic ADJ ajst-13403 136 48 properties property NOUN ajst-13403 136 49 of of ADP ajst-13403 136 50 the the DET ajst-13403 136 51 rubber rubber NOUN ajst-13403 136 52 material material NOUN ajst-13403 136 53 , , PUNCT ajst-13403 136 54 the the DET ajst-13403 136 55 rubber rubber NOUN ajst-13403 136 56 core core NOUN ajst-13403 136 57 will will AUX ajst-13403 136 58 become become VERB ajst-13403 136 59 soft soft ADJ ajst-13403 136 60 ( ( PUNCT ajst-13403 136 61 that that PRON ajst-13403 136 62 is is ADV ajst-13403 136 63 , , PUNCT ajst-13403 136 64 viscidity viscidity NOUN ajst-13403 136 65 ) ) PUNCT ajst-13403 136 66 , , PUNCT ajst-13403 136 67 and and CCONJ ajst-13403 136 68 even even ADV ajst-13403 136 69 carbonization carbonization NOUN ajst-13403 136 70 , , PUNCT ajst-13403 136 71 resulting result VERB ajst-13403 136 72 in in ADP ajst-13403 136 73 the the DET ajst-13403 136 74 sealing sealing NOUN ajst-13403 136 75 performance performance NOUN ajst-13403 136 76 of of ADP ajst-13403 136 77 the the DET ajst-13403 136 78 rubber rubber NOUN ajst-13403 136 79 core core NOUN ajst-13403 136 80 is be AUX ajst-13403 136 81 reduced reduce VERB ajst-13403 136 82 , , PUNCT ajst-13403 136 83 and and CCONJ ajst-13403 136 84 finally finally ADV ajst-13403 136 85 high high ADJ ajst-13403 136 86 temperature temperature NOUN ajst-13403 136 87 failure failure NOUN ajst-13403 136 88 . . PUNCT ajst-13403 137 1 5 5 X ajst-13403 137 2 . . X ajst-13403 137 3 conclusion conclusion NOUN ajst-13403 137 4 this this DET ajst-13403 137 5 paper paper NOUN ajst-13403 137 6 analyzes analyze VERB ajst-13403 137 7 the the DET ajst-13403 137 8 sealing sealing NOUN ajst-13403 137 9 process process NOUN ajst-13403 137 10 of of ADP ajst-13403 137 11 rubber rubber NOUN ajst-13403 137 12 core core NOUN ajst-13403 137 13 and and CCONJ ajst-13403 137 14 the the DET ajst-13403 137 15 effect effect NOUN ajst-13403 137 16 of of ADP ajst-13403 137 17 bubble bubble NOUN ajst-13403 137 18 defect defect NOUN ajst-13403 137 19 in in ADP ajst-13403 137 20 rubber rubber NOUN ajst-13403 137 21 core core NOUN ajst-13403 137 22 on on ADP ajst-13403 137 23 the the DET ajst-13403 137 24 safety safety NOUN ajst-13403 137 25 performance performance NOUN ajst-13403 137 26 of of ADP ajst-13403 137 27 rubber rubber NOUN ajst-13403 137 28 core core NOUN ajst-13403 137 29 under under ADP ajst-13403 137 30 different different ADJ ajst-13403 137 31 drilling drilling NOUN ajst-13403 137 32 fluid fluid NOUN ajst-13403 137 33 pressures pressure NOUN ajst-13403 137 34 . . PUNCT ajst-13403 138 1 finally finally ADV ajst-13403 138 2 , , PUNCT ajst-13403 138 3 the the DET ajst-13403 138 4 influence influence NOUN ajst-13403 138 5 of of ADP ajst-13403 138 6 metal metal NOUN ajst-13403 138 7 degumming degumming NOUN ajst-13403 138 8 in in ADP ajst-13403 138 9 different different ADJ ajst-13403 138 10 positions position NOUN ajst-13403 138 11 of of ADP ajst-13403 138 12 the the DET ajst-13403 138 13 core core NOUN ajst-13403 138 14 on on ADP ajst-13403 138 15 the the DET ajst-13403 138 16 safety safety NOUN ajst-13403 138 17 performance performance NOUN ajst-13403 138 18 of of ADP ajst-13403 138 19 the the DET ajst-13403 138 20 core core NOUN ajst-13403 138 21 was be AUX ajst-13403 138 22 analyzed analyze VERB ajst-13403 138 23 . . PUNCT ajst-13403 139 1 the the DET ajst-13403 139 2 results result NOUN ajst-13403 139 3 show show VERB ajst-13403 139 4 that that SCONJ ajst-13403 139 5 : : PUNCT ajst-13403 140 1 1 1 X ajst-13403 140 2 . . X ajst-13403 140 3 the the PRON ajst-13403 140 4 larger large ADJ ajst-13403 140 5 the the DET ajst-13403 140 6 initial initial ADJ ajst-13403 140 7 sealing sealing NOUN ajst-13403 140 8 pressure pressure NOUN ajst-13403 140 9 and and CCONJ ajst-13403 140 10 contact contact NOUN ajst-13403 140 11 stress stress NOUN ajst-13403 140 12 value value NOUN ajst-13403 140 13 of of ADP ajst-13403 140 14 the the DET ajst-13403 140 15 rubber rubber NOUN ajst-13403 140 16 core core NOUN ajst-13403 140 17 on on ADP ajst-13403 140 18 the the DET ajst-13403 140 19 drill drill NOUN ajst-13403 140 20 pipe pipe NOUN ajst-13403 140 21 , , PUNCT ajst-13403 140 22 the the PRON ajst-13403 140 23 better well ADJ ajst-13403 140 24 the the DET ajst-13403 140 25 sealing sealing NOUN ajst-13403 140 26 effect effect NOUN ajst-13403 140 27 of of ADP ajst-13403 140 28 the the DET ajst-13403 140 29 rubber rubber NOUN ajst-13403 140 30 core core NOUN ajst-13403 140 31 on on ADP ajst-13403 140 32 the the DET ajst-13403 140 33 drill drill NOUN ajst-13403 140 34 pipe pipe NOUN ajst-13403 140 35 , , PUNCT ajst-13403 140 36 and and CCONJ ajst-13403 140 37 the the PRON ajst-13403 140 38 larger large ADJ ajst-13403 140 39 the the DET ajst-13403 140 40 mises mises PROPN ajst-13403 140 41 stress stress NOUN ajst-13403 140 42 value value NOUN ajst-13403 140 43 , , PUNCT ajst-13403 140 44 the the PRON ajst-13403 140 45 more more ADV ajst-13403 140 46 likely likely ADJ ajst-13403 140 47 the the DET ajst-13403 140 48 fatigue fatigue NOUN ajst-13403 140 49 failure failure NOUN ajst-13403 140 50 of of ADP ajst-13403 140 51 the the DET ajst-13403 140 52 rubber rubber NOUN ajst-13403 140 53 core core NOUN ajst-13403 140 54 will will AUX ajst-13403 140 55 occur occur VERB ajst-13403 140 56 . . PUNCT ajst-13403 141 1 2 2 X ajst-13403 141 2 . . X ajst-13403 141 3 the the DET ajst-13403 141 4 contact contact NOUN ajst-13403 141 5 stress stress NOUN ajst-13403 141 6 of of ADP ajst-13403 141 7 the the DET ajst-13403 141 8 rubber rubber NOUN ajst-13403 141 9 core core NOUN ajst-13403 141 10 is be AUX ajst-13403 141 11 basically basically ADV ajst-13403 141 12 the the DET ajst-13403 141 13 same same ADJ ajst-13403 141 14 during during ADP ajst-13403 141 15 drilling drilling NOUN ajst-13403 141 16 ; ; PUNCT ajst-13403 141 17 in in ADP ajst-13403 141 18 the the DET ajst-13403 141 19 process process NOUN ajst-13403 141 20 of of ADP ajst-13403 141 21 drilling drilling NOUN ajst-13403 141 22 , , PUNCT ajst-13403 141 23 the the DET ajst-13403 141 24 contact contact NOUN ajst-13403 141 25 stress stress NOUN ajst-13403 141 26 at at ADP ajst-13403 141 27 the the DET ajst-13403 141 28 sealing sealing NOUN ajst-13403 141 29 surface surface NOUN ajst-13403 141 30 is be AUX ajst-13403 141 31 greater great ADJ ajst-13403 141 32 than than ADP ajst-13403 141 33 10mpa 10mpa NOUN ajst-13403 141 34 , , PUNCT ajst-13403 141 35 and and CCONJ ajst-13403 141 36 the the DET ajst-13403 141 37 sealing sealing NOUN ajst-13403 141 38 effect effect NOUN ajst-13403 141 39 of of ADP ajst-13403 141 40 rubber rubber NOUN ajst-13403 141 41 core core NOUN ajst-13403 141 42 is be AUX ajst-13403 141 43 good good ADJ ajst-13403 141 44 . . PUNCT ajst-13403 142 1 therefore therefore ADV ajst-13403 142 2 , , PUNCT ajst-13403 142 3 the the DET ajst-13403 142 4 contact contact NOUN ajst-13403 142 5 stress stress NOUN ajst-13403 142 6 and and CCONJ ajst-13403 142 7 contact contact NOUN ajst-13403 142 8 area area NOUN ajst-13403 142 9 of of ADP ajst-13403 142 10 the the DET ajst-13403 142 11 rubber rubber NOUN ajst-13403 142 12 core core NOUN ajst-13403 142 13 when when SCONJ ajst-13403 142 14 it it PRON ajst-13403 142 15 passes pass VERB ajst-13403 142 16 through through ADP ajst-13403 142 17 the the DET ajst-13403 142 18 joint joint NOUN ajst-13403 142 19 of of ADP ajst-13403 142 20 the the DET ajst-13403 142 21 drill drill NOUN ajst-13403 142 22 pipe pipe NOUN ajst-13403 142 23 are be AUX ajst-13403 142 24 greater great ADJ ajst-13403 142 25 than than ADP ajst-13403 142 26 that that PRON ajst-13403 142 27 when when SCONJ ajst-13403 142 28 it it PRON ajst-13403 142 29 passes pass VERB ajst-13403 142 30 through through ADP ajst-13403 142 31 the the DET ajst-13403 142 32 body body NOUN ajst-13403 142 33 of of ADP ajst-13403 142 34 the the DET ajst-13403 142 35 drill drill NOUN ajst-13403 142 36 pipe pipe NOUN ajst-13403 142 37 . . PUNCT ajst-13403 143 1 generally generally ADV ajst-13403 143 2 speaking speak VERB ajst-13403 143 3 , , PUNCT ajst-13403 143 4 the the DET ajst-13403 143 5 drilling drilling NOUN ajst-13403 143 6 conditions condition NOUN ajst-13403 143 7 have have VERB ajst-13403 143 8 great great ADJ ajst-13403 143 9 influence influence NOUN ajst-13403 143 10 on on ADP ajst-13403 143 11 the the DET ajst-13403 143 12 sealing sealing NOUN ajst-13403 143 13 performance performance NOUN ajst-13403 143 14 of of ADP ajst-13403 143 15 rubber rubber NOUN ajst-13403 143 16 core core NOUN ajst-13403 143 17 . . PUNCT ajst-13403 144 1 3 3 X ajst-13403 144 2 . . X ajst-13403 144 3 under under ADP ajst-13403 144 4 different different ADJ ajst-13403 144 5 drilling drilling NOUN ajst-13403 144 6 fluid fluid NOUN ajst-13403 144 7 pressures pressure NOUN ajst-13403 144 8 , , PUNCT ajst-13403 144 9 with with ADP ajst-13403 144 10 the the DET ajst-13403 144 11 increase increase NOUN ajst-13403 144 12 of of ADP ajst-13403 144 13 pressure pressure NOUN ajst-13403 144 14 , , PUNCT ajst-13403 144 15 the the PRON ajst-13403 144 16 greater great ADJ ajst-13403 144 17 the the DET ajst-13403 144 18 drilling drilling NOUN ajst-13403 144 19 fluid fluid NOUN ajst-13403 144 20 pressure pressure NOUN ajst-13403 144 21 at at ADP ajst-13403 144 22 the the DET ajst-13403 144 23 same same ADJ ajst-13403 144 24 drilling drilling NOUN ajst-13403 144 25 moment moment NOUN ajst-13403 144 26 , , PUNCT ajst-13403 144 27 the the DET ajst-13403 144 28 peak peak NOUN ajst-13403 144 29 pressure pressure NOUN ajst-13403 144 30 will will AUX ajst-13403 144 31 gradually gradually ADV ajst-13403 144 32 increase increase VERB ajst-13403 144 33 . . PUNCT ajst-13403 145 1 it it PRON ajst-13403 145 2 can can AUX ajst-13403 145 3 be be AUX ajst-13403 145 4 found find VERB ajst-13403 145 5 that that SCONJ ajst-13403 145 6 with with ADP ajst-13403 145 7 the the DET ajst-13403 145 8 increase increase NOUN ajst-13403 145 9 of of ADP ajst-13403 145 10 wellhead wellhead NOUN ajst-13403 145 11 pressure pressure NOUN ajst-13403 145 12 , , PUNCT ajst-13403 145 13 the the DET ajst-13403 145 14 deformation deformation NOUN ajst-13403 145 15 of of ADP ajst-13403 145 16 the the DET ajst-13403 145 17 rubber rubber NOUN ajst-13403 145 18 core core NOUN ajst-13403 145 19 increases increase NOUN ajst-13403 145 20 , , PUNCT ajst-13403 145 21 and and CCONJ ajst-13403 145 22 the the DET ajst-13403 145 23 contact contact NOUN ajst-13403 145 24 length length NOUN ajst-13403 145 25 between between ADP ajst-13403 145 26 the the DET ajst-13403 145 27 inner inner ADJ ajst-13403 145 28 cone cone NOUN ajst-13403 145 29 of of ADP ajst-13403 145 30 the the DET ajst-13403 145 31 rubber rubber NOUN ajst-13403 145 32 core core NOUN ajst-13403 145 33 and and CCONJ ajst-13403 145 34 the the DET ajst-13403 145 35 drill drill NOUN ajst-13403 145 36 pipe pipe NOUN ajst-13403 145 37 increases increase NOUN ajst-13403 145 38 . . PUNCT ajst-13403 146 1 the the DET ajst-13403 146 2 contact contact NOUN ajst-13403 146 3 pressure pressure NOUN ajst-13403 146 4 of of ADP ajst-13403 146 5 the the DET ajst-13403 146 6 main main ADJ ajst-13403 146 7 sealing sealing NOUN ajst-13403 146 8 section section NOUN ajst-13403 146 9 is be AUX ajst-13403 146 10 greater great ADJ ajst-13403 146 11 than than ADP ajst-13403 146 12 the the DET ajst-13403 146 13 corresponding corresponding ADJ ajst-13403 146 14 wellhead wellhead NOUN ajst-13403 146 15 pressure pressure NOUN ajst-13403 146 16 , , PUNCT ajst-13403 146 17 which which PRON ajst-13403 146 18 can can AUX ajst-13403 146 19 form form VERB ajst-13403 146 20 a a DET ajst-13403 146 21 good good ADJ ajst-13403 146 22 seal seal NOUN ajst-13403 146 23 , , PUNCT ajst-13403 146 24 reflecting reflect VERB ajst-13403 146 25 the the DET ajst-13403 146 26 self self NOUN ajst-13403 146 27 - - PUNCT ajst-13403 146 28 sealing seal VERB ajst-13403 146 29 performance performance NOUN ajst-13403 146 30 of of ADP ajst-13403 146 31 the the DET ajst-13403 146 32 conical conical ADJ ajst-13403 146 33 rubber rubber NOUN ajst-13403 146 34 core core NOUN ajst-13403 146 35 . . PUNCT ajst-13403 147 1 the the DET ajst-13403 147 2 contact contact NOUN ajst-13403 147 3 pressure pressure NOUN ajst-13403 147 4 of of ADP ajst-13403 147 5 some some DET ajst-13403 147 6 nodes node NOUN ajst-13403 147 7 in in ADP ajst-13403 147 8 the the DET ajst-13403 147 9 horn horn NOUN ajst-13403 147 10 of of ADP ajst-13403 147 11 the the DET ajst-13403 147 12 inner inner ADJ ajst-13403 147 13 cone cone NOUN ajst-13403 147 14 is be AUX ajst-13403 147 15 greater great ADJ ajst-13403 147 16 than than ADP ajst-13403 147 17 the the DET ajst-13403 147 18 corresponding corresponding ADJ ajst-13403 147 19 wellhead wellhead NOUN ajst-13403 147 20 pressure pressure NOUN ajst-13403 147 21 , , PUNCT ajst-13403 147 22 which which PRON ajst-13403 147 23 also also ADV ajst-13403 147 24 plays play VERB ajst-13403 147 25 a a DET ajst-13403 147 26 certain certain ADJ ajst-13403 147 27 role role NOUN ajst-13403 147 28 in in ADP ajst-13403 147 29 auxiliary auxiliary ADJ ajst-13403 147 30 sealing sealing NOUN ajst-13403 147 31 . . PUNCT ajst-13403 148 1 the the DET ajst-13403 148 2 drilling drilling NOUN ajst-13403 148 3 fluid fluid NOUN ajst-13403 148 4 pressure pressure NOUN ajst-13403 148 5 significantly significantly ADV ajst-13403 148 6 affects affect VERB ajst-13403 148 7 the the DET ajst-13403 148 8 maximum maximum ADJ ajst-13403 148 9 equivalent equivalent ADJ ajst-13403 148 10 stress stress NOUN ajst-13403 148 11 of of ADP ajst-13403 148 12 the the DET ajst-13403 148 13 core core NOUN ajst-13403 148 14 , , PUNCT ajst-13403 148 15 and and CCONJ ajst-13403 148 16 the the DET ajst-13403 148 17 maximum maximum ADJ ajst-13403 148 18 equivalent equivalent ADJ ajst-13403 148 19 stress stress NOUN ajst-13403 148 20 appears appear VERB ajst-13403 148 21 in in ADP ajst-13403 148 22 the the DET ajst-13403 148 23 bubble bubble NOUN ajst-13403 148 24 position position NOUN ajst-13403 148 25 inside inside ADP ajst-13403 148 26 the the DET ajst-13403 148 27 core core NOUN ajst-13403 148 28 at at ADP ajst-13403 148 29 different different ADJ ajst-13403 148 30 times time NOUN ajst-13403 148 31 and and CCONJ ajst-13403 148 32 under under ADP ajst-13403 148 33 different different ADJ ajst-13403 148 34 drilling drilling NOUN ajst-13403 148 35 fluid fluid NOUN ajst-13403 148 36 pressure pressure NOUN ajst-13403 148 37 . . PUNCT ajst-13403 149 1 4 4 X ajst-13403 149 2 . . X ajst-13403 149 3 the the DET ajst-13403 149 4 degumming degumming NOUN ajst-13403 149 5 position position NOUN ajst-13403 149 6 is be AUX ajst-13403 149 7 placed place VERB ajst-13403 149 8 in in ADP ajst-13403 149 9 the the DET ajst-13403 149 10 contact contact NOUN ajst-13403 149 11 position position NOUN ajst-13403 149 12 between between ADP ajst-13403 149 13 the the DET ajst-13403 149 14 metal metal NOUN ajst-13403 149 15 and and CCONJ ajst-13403 149 16 the the DET ajst-13403 149 17 rubber rubber NOUN ajst-13403 149 18 core core NOUN ajst-13403 149 19 . . PUNCT ajst-13403 150 1 when when SCONJ ajst-13403 150 2 the the DET ajst-13403 150 3 tensile tensile NOUN ajst-13403 150 4 stress stress NOUN ajst-13403 150 5 exceeds exceed VERB ajst-13403 150 6 the the DET ajst-13403 150 7 limit limit NOUN ajst-13403 150 8 of of ADP ajst-13403 150 9 the the DET ajst-13403 150 10 rubber rubber NOUN ajst-13403 150 11 core core NOUN ajst-13403 150 12 material material NOUN ajst-13403 150 13 , , PUNCT ajst-13403 150 14 radial radial ADJ ajst-13403 150 15 cracks crack NOUN ajst-13403 150 16 and and CCONJ ajst-13403 150 17 circumferential circumferential ADJ ajst-13403 150 18 cracks crack NOUN ajst-13403 150 19 will will AUX ajst-13403 150 20 occur occur VERB ajst-13403 150 21 on on ADP ajst-13403 150 22 the the DET ajst-13403 150 23 upper upper ADJ ajst-13403 150 24 surface surface NOUN ajst-13403 150 25 of of ADP ajst-13403 150 26 the the DET ajst-13403 150 27 rubber rubber NOUN ajst-13403 150 28 core core NOUN ajst-13403 150 29 . . PUNCT ajst-13403 151 1 if if SCONJ ajst-13403 151 2 multiple multiple ADJ ajst-13403 151 3 trips trip NOUN ajst-13403 151 4 are be AUX ajst-13403 151 5 made make VERB ajst-13403 151 6 , , PUNCT ajst-13403 151 7 the the DET ajst-13403 151 8 core core NOUN ajst-13403 151 9 will will AUX ajst-13403 151 10 suffer suffer VERB ajst-13403 151 11 from from ADP ajst-13403 151 12 fatigue fatigue NOUN ajst-13403 151 13 alternating alternate VERB ajst-13403 151 14 stress stress NOUN ajst-13403 151 15 . . PUNCT ajst-13403 152 1 the the DET ajst-13403 152 2 sudden sudden ADJ ajst-13403 152 3 change change NOUN ajst-13403 152 4 of of ADP ajst-13403 152 5 material material NOUN ajst-13403 152 6 properties property NOUN ajst-13403 152 7 at at ADP ajst-13403 152 8 the the DET ajst-13403 152 9 contact contact NOUN ajst-13403 152 10 point point NOUN ajst-13403 152 11 between between ADP ajst-13403 152 12 the the DET ajst-13403 152 13 rubber rubber NOUN ajst-13403 152 14 core core NOUN ajst-13403 152 15 and and CCONJ ajst-13403 152 16 the the DET ajst-13403 152 17 metal metal NOUN ajst-13403 152 18 leads lead VERB ajst-13403 152 19 to to ADP ajst-13403 152 20 obvious obvious ADJ ajst-13403 152 21 stress stress NOUN ajst-13403 152 22 concentration concentration NOUN ajst-13403 152 23 in in ADP ajst-13403 152 24 the the DET ajst-13403 152 25 rubber rubber NOUN ajst-13403 152 26 core core NOUN ajst-13403 152 27 . . PUNCT ajst-13403 153 1 when when SCONJ ajst-13403 153 2 the the DET ajst-13403 153 3 stress stress NOUN ajst-13403 153 4 exceeds exceed VERB ajst-13403 153 5 the the DET ajst-13403 153 6 ultimate ultimate ADJ ajst-13403 153 7 stress stress NOUN ajst-13403 153 8 of of ADP ajst-13403 153 9 the the DET ajst-13403 153 10 rubber rubber NOUN ajst-13403 153 11 material material NOUN ajst-13403 153 12 , , PUNCT ajst-13403 153 13 the the DET ajst-13403 153 14 rubber rubber NOUN ajst-13403 153 15 core core NOUN ajst-13403 153 16 degumming degumme VERB ajst-13403 153 17 cracking cracking NOUN ajst-13403 153 18 will will AUX ajst-13403 153 19 occur occur VERB ajst-13403 153 20 . . PUNCT ajst-13403 154 1 with with ADP ajst-13403 154 2 the the DET ajst-13403 154 3 increase increase NOUN ajst-13403 154 4 of of ADP ajst-13403 154 5 drilling drilling NOUN ajst-13403 154 6 times time NOUN ajst-13403 154 7 , , PUNCT ajst-13403 154 8 rubber rubber NOUN ajst-13403 154 9 is be AUX ajst-13403 154 10 prone prone ADJ ajst-13403 154 11 to to ADP ajst-13403 154 12 fatigue fatigue NOUN ajst-13403 154 13 cracks crack NOUN ajst-13403 154 14 . . PUNCT ajst-13403 155 1 eventually eventually ADV ajst-13403 155 2 they they PRON ajst-13403 155 3 tear tear VERB ajst-13403 155 4 each each DET ajst-13403 155 5 other other ADJ ajst-13403 155 6 apart apart ADV ajst-13403 155 7 . . PUNCT ajst-13403 156 1 references reference NOUN ajst-13403 156 2 [ [ X ajst-13403 156 3 1 1 X ajst-13403 156 4 ] ] PUNCT ajst-13403 156 5 vujasinovic vujasinovic ADP ajst-13403 156 6 a a DET ajst-13403 156 7 n. n. NOUN ajst-13403 156 8 how how SCONJ ajst-13403 156 9 blowout blowout NOUN ajst-13403 156 10 preventers preventer NOUN ajst-13403 156 11 work[j work[j VERB ajst-13403 156 12 ] ] PUNCT ajst-13403 156 13 . . PUNCT ajst-13403 157 1 journal journal PROPN ajst-13403 157 2 of of ADP ajst-13403 157 3 petroleum petroleum NOUN ajst-13403 157 4 technology technology NOUN ajst-13403 157 5 , , PUNCT ajst-13403 157 6 1986 1986 NUM ajst-13403 157 7 , , PUNCT ajst-13403 157 8 38(09 38(09 NUM ajst-13403 157 9 ): ): PUNCT ajst-13403 157 10 935 935 NUM ajst-13403 157 11 - - SYM ajst-13403 157 12 937 937 NUM ajst-13403 157 13 . . PUNCT ajst-13403 158 1 [ [ X ajst-13403 158 2 2 2 NUM ajst-13403 158 3 ] ] PUNCT ajst-13403 158 4 behroozinia behroozinia NOUN ajst-13403 159 1 p. p. NOUN ajst-13403 159 2 a a DET ajst-13403 159 3 review review NOUN ajst-13403 159 4 of of ADP ajst-13403 159 5 fatigue fatigue NOUN ajst-13403 159 6 and and CCONJ ajst-13403 159 7 fracture fracture NOUN ajst-13403 159 8 mechanics mechanic NOUN ajst-13403 159 9 with with ADP ajst-13403 159 10 a a DET ajst-13403 159 11 focus focus NOUN ajst-13403 159 12 on on ADP ajst-13403 159 13 rubber rubber NOUN ajst-13403 159 14 - - PUNCT ajst-13403 159 15 based base VERB ajst-13403 159 16 materials material NOUN ajst-13403 159 17 . . PUNCT ajst-13403 160 1 proceedings proceeding NOUN ajst-13403 160 2 of of ADP ajst-13403 160 3 the the DET ajst-13403 160 4 institution institution NOUN ajst-13403 160 5 of of ADP ajst-13403 160 6 mechanical mechanical ADJ ajst-13403 160 7 engineers engineer NOUN ajst-13403 160 8 , , PUNCT ajst-13403 160 9 part part NOUN ajst-13403 160 10 l l NOUN ajst-13403 160 11 : : PUNCT ajst-13403 160 12 journal journal NOUN ajst-13403 160 13 of of ADP ajst-13403 160 14 materials material NOUN ajst-13403 160 15 : : PUNCT ajst-13403 160 16 design design NOUN ajst-13403 160 17 and and CCONJ ajst-13403 160 18 applications application NOUN ajst-13403 160 19 . . PUNCT ajst-13403 161 1 2019 2019 NUM ajst-13403 161 2 ; ; PUNCT ajst-13403 161 3 vol vol NOUN ajst-13403 161 4 . . PUNCT ajst-13403 162 1 233(no.5 233(no.5 NUM ajst-13403 162 2 ): ): PUNCT ajst-13403 162 3 1005 1005 NUM ajst-13403 162 4 - - SYM ajst-13403 162 5 19 19 NUM ajst-13403 162 6 . . PUNCT ajst-13403 163 1 [ [ X ajst-13403 163 2 3 3 NUM ajst-13403 163 3 ] ] SYM ajst-13403 163 4 hu hu PROPN ajst-13403 163 5 g g PROPN ajst-13403 163 6 , , PUNCT ajst-13403 163 7 wang wang PROPN ajst-13403 163 8 m m PROPN ajst-13403 163 9 , , PUNCT ajst-13403 163 10 wang wang PROPN ajst-13403 163 11 g g PROPN ajst-13403 163 12 , , PUNCT ajst-13403 163 13 et et PROPN ajst-13403 163 14 al al PROPN ajst-13403 163 15 . . PUNCT ajst-13403 164 1 sealing seal VERB ajst-13403 164 2 performance performance NOUN ajst-13403 164 3 and and CCONJ ajst-13403 164 4 failure failure NOUN ajst-13403 164 5 mechanism mechanism NOUN ajst-13403 164 6 analysis analysis NOUN ajst-13403 164 7 of of ADP ajst-13403 164 8 packing pack VERB ajst-13403 164 9 unit unit NOUN ajst-13403 164 10 used use VERB ajst-13403 164 11 in in ADP ajst-13403 164 12 rotary rotary ADJ ajst-13403 164 13 blowout blowout NOUN ajst-13403 164 14 preventer preventer NOUN ajst-13403 164 15 for for ADP ajst-13403 164 16 under under ADV ajst-13403 164 17 - - PUNCT ajst-13403 164 18 balanced balanced ADJ ajst-13403 164 19 drilling[j drilling[j NOUN ajst-13403 164 20 ] ] PUNCT ajst-13403 164 21 . . PUNCT ajst-13403 165 1 engineering engineering NOUN ajst-13403 165 2 failure failure NOUN ajst-13403 165 3 analysis analysis NOUN ajst-13403 165 4 , , PUNCT ajst-13403 165 5 2021 2021 NUM ajst-13403 165 6 , , PUNCT ajst-13403 165 7 129 129 NUM ajst-13403 165 8 : : SYM ajst-13403 165 9 105654 105654 NUM ajst-13403 165 10 . . PUNCT ajst-13403 166 1 [ [ X ajst-13403 166 2 4 4 NUM ajst-13403 166 3 ] ] X ajst-13403 166 4 xiao xiao PROPN ajst-13403 166 5 - - PUNCT ajst-13403 166 6 dong dong PROPN ajst-13403 166 7 z z PROPN ajst-13403 166 8 , , PUNCT ajst-13403 166 9 long long ADJ ajst-13403 166 10 c. c. NOUN ajst-13403 166 11 effect effect NOUN ajst-13403 166 12 of of ADP ajst-13403 166 13 the the DET ajst-13403 166 14 spool spool ADJ ajst-13403 166 15 cone cone NOUN ajst-13403 166 16 angle angle NOUN ajst-13403 166 17 on on ADP ajst-13403 166 18 the the DET ajst-13403 166 19 erosion erosion NOUN ajst-13403 166 20 of of ADP ajst-13403 166 21 a a DET ajst-13403 166 22 novel novel ADJ ajst-13403 166 23 inner inner ADJ ajst-13403 166 24 blowout blowout NOUN ajst-13403 166 25 preventer[j preventer[j NOUN ajst-13403 166 26 ] ] PUNCT ajst-13403 166 27 . . PUNCT ajst-13403 167 1 journal journal PROPN ajst-13403 167 2 of of ADP ajst-13403 167 3 failure failure NOUN ajst-13403 167 4 analysis analysis NOUN ajst-13403 167 5 and and CCONJ ajst-13403 167 6 prevention prevention NOUN ajst-13403 167 7 , , PUNCT ajst-13403 167 8 2019 2019 NUM ajst-13403 167 9 , , PUNCT ajst-13403 167 10 19 19 NUM ajst-13403 167 11 : : SYM ajst-13403 167 12 279 279 NUM ajst-13403 167 13 - - SYM ajst-13403 167 14 290 290 NUM ajst-13403 167 15 . . PUNCT ajst-13403 167 16 235 235 NUM ajst-13403 168 1 [ [ SYM ajst-13403 168 2 5 5 NUM ajst-13403 168 3 ] ] SYM ajst-13403 168 4 li li PROPN ajst-13403 168 5 t t PROPN ajst-13403 168 6 , , PUNCT ajst-13403 168 7 jiang jiang PROPN ajst-13403 168 8 d d PROPN ajst-13403 168 9 , , PUNCT ajst-13403 168 10 liu liu PROPN ajst-13403 168 11 b b PROPN ajst-13403 168 12 , , PUNCT ajst-13403 168 13 et et PROPN ajst-13403 168 14 al al PROPN ajst-13403 168 15 . . PUNCT ajst-13403 168 16 plastic plastic ADJ ajst-13403 168 17 behavior behavior NOUN ajst-13403 168 18 and and CCONJ ajst-13403 168 19 fracture fracture PROPN ajst-13403 168 20 cross cross NOUN ajst-13403 168 21 section section NOUN ajst-13403 168 22 of of ADP ajst-13403 168 23 coiled coil VERB ajst-13403 168 24 tubing tubing NOUN ajst-13403 168 25 in in ADP ajst-13403 168 26 the the DET ajst-13403 168 27 ram ram NOUN ajst-13403 168 28 shearing shearing NOUN ajst-13403 168 29 process process NOUN ajst-13403 168 30 of of ADP ajst-13403 168 31 subsea subsea NOUN ajst-13403 168 32 blowout blowout NOUN ajst-13403 168 33 preventer[j preventer[j NOUN ajst-13403 168 34 ] ] PUNCT ajst-13403 168 35 . . PUNCT ajst-13403 169 1 ocean ocean PROPN ajst-13403 169 2 engineering engineering PROPN ajst-13403 169 3 , , PUNCT ajst-13403 169 4 2022 2022 NUM ajst-13403 169 5 , , PUNCT ajst-13403 169 6 254 254 NUM ajst-13403 169 7 : : SYM ajst-13403 169 8 111376 111376 NUM ajst-13403 169 9 . . PUNCT ajst-13403 170 1 [ [ X ajst-13403 170 2 6 6 NUM ajst-13403 170 3 ] ] X ajst-13403 170 4 qiu qiu PROPN ajst-13403 170 5 x x SYM ajst-13403 170 6 , , PUNCT ajst-13403 170 7 yin yin PROPN ajst-13403 170 8 h h PROPN ajst-13403 170 9 , , PUNCT ajst-13403 170 10 xing xing PROPN ajst-13403 170 11 q. q. PROPN ajst-13403 170 12 research research NOUN ajst-13403 170 13 progress progress NOUN ajst-13403 170 14 on on ADP ajst-13403 170 15 fatigue fatigue NOUN ajst-13403 170 16 life life NOUN ajst-13403 170 17 of of ADP ajst-13403 170 18 rubber rubber NOUN ajst-13403 170 19 materials material NOUN ajst-13403 170 20 . . PUNCT ajst-13403 171 1 affiliation affiliation NOUN ajst-13403 171 2 college college NOUN ajst-13403 171 3 of of ADP ajst-13403 171 4 electromechanical electromechanical ADJ ajst-13403 171 5 and and CCONJ ajst-13403 171 6 engineering engineering NOUN ajst-13403 171 7 , , PUNCT ajst-13403 171 8 qingdao qingdao PROPN ajst-13403 171 9 university university PROPN ajst-13403 171 10 of of ADP ajst-13403 171 11 science science NOUN ajst-13403 171 12 and and CCONJ ajst-13403 171 13 technology technology NOUN ajst-13403 171 14 , , PUNCT ajst-13403 171 15 qingdao qingdao PROPN ajst-13403 171 16 266100 266100 NUM ajst-13403 171 17 , , PUNCT ajst-13403 171 18 china china PROPN ajst-13403 171 19 . . PUNCT ajst-13403 171 20 2022 2022 NUM ajst-13403 171 21 ; ; PUNCT ajst-13403 171 22 vol.14 vol.14 NOUN ajst-13403 171 23 ( ( PUNCT ajst-13403 171 24 no.21 no.21 PROPN ajst-13403 171 25 ): ): PUNCT ajst-13403 171 26 4592 4592 NUM ajst-13403 171 27 . . PUNCT ajst-13403 172 1 [ [ X ajst-13403 172 2 7 7 X ajst-13403 172 3 ] ] X ajst-13403 172 4 zhang zhang PROPN ajst-13403 172 5 f. f. PROPN ajst-13403 172 6 sealing seal VERB ajst-13403 172 7 performance performance NOUN ajst-13403 172 8 and and CCONJ ajst-13403 172 9 fatigue fatigue NOUN ajst-13403 172 10 life life NOUN ajst-13403 172 11 of of ADP ajst-13403 172 12 the the DET ajst-13403 172 13 fracturing fracturing NOUN ajst-13403 172 14 packer packer NOUN ajst-13403 172 15 rubber rubber NOUN ajst-13403 172 16 of of ADP ajst-13403 172 17 various various ADJ ajst-13403 172 18 materials material NOUN ajst-13403 172 19 . . PUNCT ajst-13403 173 1 proceedings proceeding NOUN ajst-13403 173 2 of of ADP ajst-13403 173 3 the the DET ajst-13403 173 4 institution institution NOUN ajst-13403 173 5 of of ADP ajst-13403 173 6 mechanical mechanical ADJ ajst-13403 173 7 engineers engineer NOUN ajst-13403 173 8 , , PUNCT ajst-13403 173 9 part part NOUN ajst-13403 173 10 c c NOUN ajst-13403 173 11 : : PUNCT ajst-13403 173 12 journal journal NOUN ajst-13403 173 13 of of ADP ajst-13403 173 14 mechanical mechanical ADJ ajst-13403 173 15 engineering engineering NOUN ajst-13403 173 16 science science NOUN ajst-13403 173 17 . . PUNCT ajst-13403 174 1 2019;vol.233(no.17):615766 2019;vol.233(no.17):615766 NOUN ajst-13403 174 2 . . PUNCT ajst-13403 175 1 [ [ X ajst-13403 175 2 8 8 NUM ajst-13403 175 3 ] ] X ajst-13403 175 4 wu wu PROPN ajst-13403 175 5 j j PROPN ajst-13403 175 6 , , PUNCT ajst-13403 175 7 he he PRON ajst-13403 175 8 y y PROPN ajst-13403 175 9 , , PUNCT ajst-13403 175 10 wu wu PROPN ajst-13403 175 11 k k PROPN ajst-13403 175 12 , , PUNCT ajst-13403 175 13 et et PROPN ajst-13403 175 14 al al PROPN ajst-13403 175 15 . . PUNCT ajst-13403 176 1 the the DET ajst-13403 176 2 performance performance NOUN ajst-13403 176 3 optimization optimization NOUN ajst-13403 176 4 of of ADP ajst-13403 176 5 the the DET ajst-13403 176 6 stripper stripper ADJ ajst-13403 176 7 rubber rubber NOUN ajst-13403 176 8 for for ADP ajst-13403 176 9 the the DET ajst-13403 176 10 rotating rotate VERB ajst-13403 176 11 blowout blowout NOUN ajst-13403 176 12 preventer preventer NOUN ajst-13403 176 13 based base VERB ajst-13403 176 14 on on ADP ajst-13403 176 15 experiments experiment NOUN ajst-13403 176 16 and and CCONJ ajst-13403 176 17 simulation[j simulation[j NOUN ajst-13403 176 18 ] ] PUNCT ajst-13403 176 19 . . PUNCT ajst-13403 177 1 journal journal PROPN ajst-13403 177 2 of of ADP ajst-13403 177 3 petroleum petroleum NOUN ajst-13403 177 4 science science NOUN ajst-13403 177 5 and and CCONJ ajst-13403 177 6 engineering engineering NOUN ajst-13403 177 7 , , PUNCT ajst-13403 177 8 2021 2021 NUM ajst-13403 177 9 , , PUNCT ajst-13403 177 10 204 204 NUM ajst-13403 177 11 : : PUNCT ajst-13403 177 12 108623 108623 NUM ajst-13403 177 13 . . PUNCT ajst-13403 178 1 [ [ X ajst-13403 178 2 9 9 NUM ajst-13403 178 3 ] ] X ajst-13403 178 4 liu liu PROPN ajst-13403 178 5 y y PROPN ajst-13403 178 6 , , PUNCT ajst-13403 178 7 qian qian PROPN ajst-13403 178 8 l l PROPN ajst-13403 178 9 , , PUNCT ajst-13403 178 10 xia xia PROPN ajst-13403 178 11 c c PROPN ajst-13403 178 12 , , PUNCT ajst-13403 178 13 et et PROPN ajst-13403 178 14 al al PROPN ajst-13403 178 15 . . PROPN ajst-13403 178 16 failure failure NOUN ajst-13403 178 17 analysis analysis NOUN ajst-13403 178 18 and and CCONJ ajst-13403 178 19 structural structural ADJ ajst-13403 178 20 optimization optimization NOUN ajst-13403 178 21 of of ADP ajst-13403 178 22 rubber rubber NOUN ajst-13403 178 23 core core NOUN ajst-13403 178 24 and and CCONJ ajst-13403 178 25 support support VERB ajst-13403 178 26 rib rib NOUN ajst-13403 178 27 of of ADP ajst-13403 178 28 full full ADJ ajst-13403 178 29 - - PUNCT ajst-13403 178 30 size size NOUN ajst-13403 178 31 spherical spherical ADJ ajst-13403 178 32 blowout blowout NOUN ajst-13403 178 33 preventer[j preventer[j NOUN ajst-13403 178 34 ] ] PUNCT ajst-13403 178 35 . . PUNCT ajst-13403 179 1 engineering engineering NOUN ajst-13403 179 2 failure failure NOUN ajst-13403 179 3 analysis analysis NOUN ajst-13403 179 4 , , PUNCT ajst-13403 179 5 2023 2023 NUM ajst-13403 179 6 , , PUNCT ajst-13403 179 7 143 143 NUM ajst-13403 179 8 : : SYM ajst-13403 179 9 106865 106865 NUM ajst-13403 179 10 . . PUNCT ajst-13403 180 1 [ [ X ajst-13403 180 2 10 10 NUM ajst-13403 180 3 ] ] X ajst-13403 180 4 zhou zhou PROPN ajst-13403 180 5 x x PROPN ajst-13403 180 6 , , PUNCT ajst-13403 180 7 li li PROPN ajst-13403 180 8 y y PROPN ajst-13403 180 9 , , PUNCT ajst-13403 180 10 chen chen PROPN ajst-13403 180 11 j j PROPN ajst-13403 180 12 , , PUNCT ajst-13403 180 13 et et PROPN ajst-13403 180 14 al al PROPN ajst-13403 180 15 . . PROPN ajst-13403 180 16 numerical numerical PROPN ajst-13403 180 17 evaluation evaluation NOUN ajst-13403 180 18 of of ADP ajst-13403 180 19 the the DET ajst-13403 180 20 coupled couple VERB ajst-13403 180 21 / / SYM ajst-13403 180 22 uncoupled uncoupled ADJ ajst-13403 180 23 effects effect NOUN ajst-13403 180 24 of of ADP ajst-13403 180 25 lower low ADJ ajst-13403 180 26 marine marine ADJ ajst-13403 180 27 riser riser NOUN ajst-13403 180 28 package package NOUN ajst-13403 180 29 and/or and/or CCONJ ajst-13403 180 30 blowout blowout NOUN ajst-13403 180 31 preventer preventer NOUN ajst-13403 180 32 with with ADP ajst-13403 180 33 a a DET ajst-13403 180 34 lower low ADJ ajst-13403 180 35 flex flex ADJ ajst-13403 180 36 joint joint NOUN ajst-13403 180 37 in in ADP ajst-13403 180 38 a a DET ajst-13403 180 39 hang hang VERB ajst-13403 180 40 - - PUNCT ajst-13403 180 41 off off ADP ajst-13403 180 42 drilling drilling NOUN ajst-13403 180 43 riser[j riser[j NOUN ajst-13403 180 44 ] ] PUNCT ajst-13403 180 45 . . PUNCT ajst-13403 181 1 ocean ocean PROPN ajst-13403 181 2 engineering engineering PROPN ajst-13403 181 3 , , PUNCT ajst-13403 181 4 2022 2022 NUM ajst-13403 181 5 , , PUNCT ajst-13403 181 6 266 266 NUM ajst-13403 181 7 : : PUNCT ajst-13403 181 8 113004 113004 NUM ajst-13403 181 9 . . PUNCT ajst-13403 182 1 [ [ X ajst-13403 182 2 11 11 NUM ajst-13403 182 3 ] ] X ajst-13403 182 4 zainagalina zainagalina PROPN ajst-13403 182 5 lz lz PROPN ajst-13403 182 6 , , PUNCT ajst-13403 182 7 bulyukova bulyukova PROPN ajst-13403 182 8 fz fz PROPN ajst-13403 182 9 , , PUNCT ajst-13403 182 10 shestakova shestakova X ajst-13403 182 11 ev ev PROPN ajst-13403 182 12 , , PUNCT ajst-13403 182 13 zaylalova zaylalova PROPN ajst-13403 182 14 vr vr PROPN ajst-13403 182 15 . . PROPN ajst-13403 182 16 finite finite PROPN ajst-13403 182 17 element element PROPN ajst-13403 182 18 method method NOUN ajst-13403 182 19 analysis analysis NOUN ajst-13403 182 20 of of ADP ajst-13403 182 21 preventer preventer NOUN ajst-13403 182 22 ram ram NOUN ajst-13403 182 23 seals seal NOUN ajst-13403 182 24 of of ADP ajst-13403 182 25 different different ADJ ajst-13403 182 26 materials material NOUN ajst-13403 182 27 . . PUNCT ajst-13403 183 1 journal journal PROPN ajst-13403 183 2 of of ADP ajst-13403 183 3 physics physics PROPN ajst-13403 183 4 : : PUNCT ajst-13403 183 5 conference conference NOUN ajst-13403 183 6 series series NOUN ajst-13403 183 7 . . PUNCT ajst-13403 184 1 2021;vol.2032:012055 2021;vol.2032:012055 NUM ajst-13403 184 2 . . PUNCT ajst-13403 185 1 [ [ X ajst-13403 185 2 12 12 NUM ajst-13403 185 3 ] ] X ajst-13403 185 4 alkadhimi alkadhimi PROPN ajst-13403 185 5 f. f. PROPN ajst-13403 185 6 wear wear VERB ajst-13403 185 7 testing testing NOUN ajst-13403 185 8 and and CCONJ ajst-13403 185 9 finite finite ADJ ajst-13403 185 10 element element NOUN ajst-13403 185 11 analysis analysis NOUN ajst-13403 185 12 of of ADP ajst-13403 185 13 nitrile nitrile ADJ ajst-13403 185 14 rubber rubber NOUN ajst-13403 185 15 ( ( PUNCT ajst-13403 185 16 nbr nbr ADJ ajst-13403 185 17 ) ) PUNCT ajst-13403 185 18 hand hand NOUN ajst-13403 185 19 pump pump NOUN ajst-13403 185 20 seals seal NOUN ajst-13403 185 21 : : PUNCT ajst-13403 185 22 dublin dublin PROPN ajst-13403 185 23 city city PROPN ajst-13403 185 24 university university PROPN ajst-13403 185 25 ; ; PUNCT ajst-13403 185 26 2015 2015 NUM ajst-13403 185 27 . . PUNCT ajst-13403 186 1 [ [ X ajst-13403 186 2 13 13 NUM ajst-13403 186 3 ] ] X ajst-13403 186 4 chen chen PROPN ajst-13403 186 5 t t PROPN ajst-13403 186 6 , , PUNCT ajst-13403 186 7 ma ma PROPN ajst-13403 186 8 w w PROPN ajst-13403 186 9 , , PUNCT ajst-13403 186 10 liu liu PROPN ajst-13403 186 11 s s PROPN ajst-13403 186 12 , , PUNCT ajst-13403 186 13 wu wu PROPN ajst-13403 186 14 j. j. PROPN ajst-13403 186 15 analysis analysis PROPN ajst-13403 186 16 on on ADP ajst-13403 186 17 mechanical mechanical ADJ ajst-13403 186 18 influencing influence VERB ajst-13403 186 19 factors factor NOUN ajst-13403 186 20 of of ADP ajst-13403 186 21 fatigue fatigue NOUN ajst-13403 186 22 behavior behavior NOUN ajst-13403 186 23 for for ADP ajst-13403 186 24 the the DET ajst-13403 186 25 packer packer NOUN ajst-13403 186 26 on on ADP ajst-13403 186 27 pipe pipe NOUN ajst-13403 186 28 ram ram NOUN ajst-13403 186 29 in in ADP ajst-13403 186 30 snubbing snub VERB ajst-13403 186 31 unit(article unit(article NOUN ajst-13403 186 32 ) ) PUNCT ajst-13403 186 33 . . PUNCT ajst-13403 187 1 engineering engineering NOUN ajst-13403 187 2 failure failure NOUN ajst-13403 187 3 analysis analysis NOUN ajst-13403 187 4 . . PUNCT ajst-13403 188 1 2019;vol.103:20 2019;vol.103:20 NUM ajst-13403 188 2 - - SYM ajst-13403 188 3 31 31 NUM ajst-13403 188 4 . . PUNCT ajst-13403 189 1 [ [ X ajst-13403 189 2 14 14 NUM ajst-13403 189 3 ] ] X ajst-13403 189 4 wang wang PROPN ajst-13403 189 5 z. z. PROPN ajst-13403 189 6 research research PROPN ajst-13403 189 7 on on ADP ajst-13403 189 8 fatigue fatigue NOUN ajst-13403 189 9 failure failure NOUN ajst-13403 189 10 mode mode NOUN ajst-13403 189 11 and and CCONJ ajst-13403 189 12 failure failure NOUN ajst-13403 189 13 theory theory NOUN ajst-13403 189 14 of of ADP ajst-13403 189 15 rubber rubber NOUN ajst-13403 189 16 . . PUNCT ajst-13403 190 1 journal journal PROPN ajst-13403 190 2 of of ADP ajst-13403 190 3 physics physics PROPN ajst-13403 190 4 : : PUNCT ajst-13403 190 5 conference conference NOUN ajst-13403 190 6 series series NOUN ajst-13403 190 7 . . PUNCT ajst-13403 191 1 2021 2021 NUM ajst-13403 191 2 ; ; PUNCT ajst-13403 192 1 vol vol NOUN ajst-13403 192 2 . . PUNCT ajst-13403 193 1 2076(no.1 2076(no.1 NUM ajst-13403 193 2 ) ) PUNCT ajst-13403 193 3 . . PUNCT ajst-13403 194 1 [ [ X ajst-13403 194 2 15 15 NUM ajst-13403 194 3 ] ] SYM ajst-13403 194 4 saintier sainti ADJ ajst-13403 194 5 n n X ajst-13403 194 6 , , PUNCT ajst-13403 194 7 cailletaud cailletaud VERB ajst-13403 194 8 g g NOUN ajst-13403 194 9 , , PUNCT ajst-13403 194 10 piques pique VERB ajst-13403 194 11 r. r. PROPN ajst-13403 194 12 multiaxial multiaxial ADJ ajst-13403 194 13 fatigue fatigue NOUN ajst-13403 194 14 life life NOUN ajst-13403 194 15 prediction prediction NOUN ajst-13403 194 16 for for ADP ajst-13403 194 17 a a DET ajst-13403 194 18 natural natural ADJ ajst-13403 194 19 rubber rubber NOUN ajst-13403 194 20 . . PUNCT ajst-13403 195 1 international international ADJ ajst-13403 195 2 journal journal PROPN ajst-13403 195 3 of of ADP ajst-13403 195 4 fatigue fatigue NOUN ajst-13403 195 5 . . PUNCT ajst-13403 196 1 2007;vol.28(no.5 2007;vol.28(no.5 X ajst-13403 196 2 - - PUNCT ajst-13403 196 3 6):530 6):530 NUM ajst-13403 196 4 - - PUNCT ajst-13403 196 5 9 9 NUM ajst-13403 196 6 . . PUNCT