Study on validation method for femur finite element model under multiple loading conditions

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Guan, Fengjiao^1 ; Zhang, Guanjun^2 ; Liu, Jie^2 ; Wang, Shujing^2 ; Luo, Xu^1

Science and Technology on Integrated Logistics Support Laboratory, National University of Defense Technology, 109 Deya Road, Changsha

410073, China^1

State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, 1st Lushan South Street, Changsha

410082, China^2

关键词: Computation time;    Computational accuracy;    Constitutive parameters;    Force-displacement curves;    Inverse calculation;    Material parameter;    Multiresponse optimization;    Sequential response surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022061/pdf
DOI  :  10.1088/1757-899X/322/2/022061

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Acquisition of accurate and reliable constitutive parameters related to bio-tissue materials was beneficial to improve biological fidelity of a Finite Element (FE) model and predict impact damages more effectively. In this paper, a femur FE model was established under multiple loading conditions with diverse impact positions. Then, based on sequential response surface method and genetic algorithms, the material parameters identification was transformed to a multi-response optimization problem. Finally, the simulation results successfully coincided with force-displacement curves obtained by numerous experiments. Thus, computational accuracy and efficiency of the entire inverse calculation process were enhanced. This method was able to effectively reduce the computation time in the inverse process of material parameters. Meanwhile, the material parameters obtained by the proposed method achieved higher accuracy.