Finite Element Simulation and Analysis of Vehicle-Pedestrian Leg Collision

doi:10.3969/j.issn.1674-0696.2015.04.20

Abstract

Abstract: The lower extremities are the main injured part when a pedestrian is involved in a traffic accident. A finite element model of collision between the car bumper and pedestrian lower leg was developed with Hypermesh software, and LSDYNA software was used to calculate and solve. The pedestrian leg injury index of tibia acceleration, knee bending angle and knee shearing displacement were presented according to ENCAP methods. The finite element model simulation results were validated with those of the car testing. It is indicated that it is necessary for the car to optimize the bumper system in order to improve the pedestrian leg protection.

Key words: traffic engineering, traffic safety, pedestrian-vehicle accidents, car bumper, simulated analysis

摘要： 在行人与轿车碰撞的交通事故中，行人下肢是主要的受伤部位。运用Hypermesh软件，建立了某型轿车保险杠对行人下肢的碰撞有限元模型，采用LS-DYNA进行了求解计算，得到了符合欧洲E-NCAP法规的胫骨加速度、膝部弯曲角和膝部剪切位移等三方面的伤害值仿真结果，并与相应试验结果进行了对比，指出了该车需要针对前保险杠行人保护性能进行结构优化与改进。

关键词: 交通工程, 交通安全, 人车碰撞, 保险杠, 仿真分析

CLC Number:

U612

Mo Mingli, Yang Haiwei, He Yansong. Finite Element Simulation and Analysis of Vehicle-Pedestrian Leg Collision[J]. Journal of Chongqing Jiaotong University(Natural Science), 2015, 34(4): 104-106.

莫明立，杨海威，贺岩松. 轿车-行人腿部碰撞的有限元仿真与分析[J]. 重庆交通大学学报（自然科学版）, 2015, 34(4): 104-106.

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