行人膝关节韧带的建模及验证研究

摘要

基于人体模型THUMS中的膝韧带模型,改进了材料参数和单元属性.采用近年较新的生物力学实验数据,逐个验证韧带模型在不同应变率下的生物逼真度.结果表明,膝韧带ACL、PCL、MCL和LCL在不同应变率下的拉力与位移关系曲线与试验结果吻合较好,说明模型具有较好的生物逼真度,能较准确地模拟韧带的损伤和拉伸响应.%Based on the knee ligament model in total human model for safety ( THUMS) , with material parameters and element properties modified, and using the newer experimental data of biomechanics in recent years, the biofidelities of ligament models under different strain rates are validated one by one. The results indicate that the relation curves of tension force vs. Displacement of ACL, PCL, MCL and LCL knee ligaments in different strain dates agree well with experiment data, meaning that the models have good biofidelity and can accurately simulate the injury and tension response of ligaments.