id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fumecheng-7077	Franulović, Marina; Marković, Kristina; Trajkovski, Ana	CALIBRATION OF MATERIAL MODELS FOR THE HUMAN CERVICAL SPINE LIGAMENT BEHAVIOUR USING A GENETIC ALGORITHM	2021	15	.pdf	application/pdf	7103	362	47	The calibration of material models was based on the genetic algorithm procedure in order to make possible optimization of material parameters identification for the chosen models. 𝜆∗ 𝜆 ≥ 𝜆∗ 4 1)2 1 3 2 1 ( 2 5 6 1 2 1 1 2 0 [ ] 1 cc c e c c c               −       = − + −         − + +             (4) 𝜎 = { 0 𝐶1 (𝜆 2 − 1 𝜆 )+𝐶3[𝑒 𝐶4(𝜆−1) − 1] 𝐶1 (𝜆 2 − 1 𝜆 ) + 𝐶5𝜆 + 𝐶6 𝜆 < 1 1 < 𝜆 < 𝜆∗ 𝜆 ≥ 𝜆∗ Values c1 to c6 represent unknown variables - material parameters which have to be identified by the numerical procedures in order to calibrate material model, σ is stress value, λ represents the current stretch value and λ* represents the stretch value on the transition point between toe and linear regions (marked as A in Fig. 1).	cache/fumecheng-7077.pdf	txt/fumecheng-7077.txt