中文摘要：

在前期研究中对下肢长骨和膝关节主要韧带的模型进行了全面验证的基础上,建立了具有详细解剖学结构的行人膝关节有限元模型,并定义了各组织间的接触。依据更符合实际行人事故中膝关节载荷特点的生物力学实验,对膝关节有限元模型进行了动态四点弯曲和动态三点弯剪仿真验证。结果显示膝关节模型的生物力学响应与实验结果吻合,能较好地反映膝关节的损伤和动力学响应,具有较好的生物逼真度。

英文摘要：

Based on the thorough validation of the models for the long bones and knee ligaments of lower limbs in previous studies of authors,a FE model for pedestrian knee joint with detailed anatomic structure is developed,and the contact properties among different tissues are defined. According to the biomechanical experiments,which more accord with the load features of knee joint in real pedestrian accidents,the knee joint FE model is validated with dynamic four-point bending and three-point bending-shear simulations. The results indicate that the biomechanical responses of knee joint FE model well agree with experimental data,and can better reflect the injuries and dynamics responses of knee joint with high biofidelity.