湖南大学学报（自然科学版）2016，Vol.43Issue(10)：42-51,10.
行人下肢高精度数值模型与损伤参数研究∗
Development and Inj ury Parameters Research of a FE Model of Lower Limb with High Precision for Adult Pedestrians
摘要
Abstract
In order to study the biomechanical response and inj ury mechanisms of pedestrian`s lower limb during impact,a three-dimensional FE model of lower limb for adult pedestrians with high precision was developed on the basis of human anatomical structure.The lower limb model included complete ana-tomical structure of femur,tibia,fibula,patella as well as soft tissues such as skin,fresh,ligaments,cap-sule meniscus and cartilage.Considering the nonuniformity of the section of cortical bone,a long bone model was developed based on CT data with the thickness and the shape of the cortical bone section varying continuously.In comparison with other modeling methods,cortical bone was modeled with two-layer solid elements to obtain higher precision and efficiency.The inj ury criterions of pedestrians′lower limb such as the ultimate bending moment of femur and tibia were obtained by modeling related biomechanical experi-ments.In addition,the influence of the thickness of cortical bone and the impact direction to injury mecha-nism and inj ury parameters of lower limb were analyzed.The inj ury parameters can provide important ref-erence for the design of cars.关键词
行人安全/下肢/有限元模型/生物力学/损伤机理Key words
pedestrian safety/lower limb/finite element model/biomechanics/inj ury mechanism分类
交通工程引用本文复制引用
兰凤崇,黄伟,陈吉清,吴凯..行人下肢高精度数值模型与损伤参数研究∗[J].湖南大学学报（自然科学版）,2016,43(10):42-51,10.基金项目
国家自然科学基金资助项目(51375170),National Natural Science Foundation of China(51375170) （51375170）
广东省自然科学基金资助项目(2015A030313213) （2015A030313213）
