id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-378	Procházka, P. P.; Kugblenu, M. G.	Application of Discrete Element Methods to the Problem of Rock Bumps	2002	11	.pdf	application/pdf	4199	237	66	A summary is published in [7], where it is pointed out that at failure rocks with a wide range of strengths approximately satisfy the fol- lowing equation: � � � � �� � � �� � � � A 1 2 , where � and � are the shear and normal stresses along the failure plane, �� is the rock tensile strength (note that tension is positive), 2� is a universal constant equal to 0.684 ± correctional term, and A is a material constant. AP02_04.vp 1 Introduction The arguments for using discrete element methods in- stead of methods defined on the continuum of the entire domain were discussed in a previous paper by the authors, [9].	cache/ap-378.pdf	txt/ap-378.txt