轿车保险杠泡沫密度对行人腿部保护研究  

The Research on Vehicle Bumper Foam Density of Pedestrians Legs

作　　者：乌秀春[1] 周盼[1,2] 鲁宏升 

机构地区：[1]上海电机学院汽车学院,上海200245 [2]上海理工大学机械工程学院,上海200093 [3]上海恒士达科技有限公司,上海201203

出　　处：《机械设计与制造》2016年第3期117-120,共4页Machinery Design & Manufacture

基　　金：上海电机学院学科基础建设项目(12XKJC02);上海市科技型中小企业技术创新基金项目(1301H138200)

摘　　要：近年来,随着我国汽车行业的迅猛发展,交通事故中行人的死亡率逐年增加,行人保护研究作为汽车安全的新兴领域已经引起了广泛关注,为减少在交通事故中对行人的伤害,基于有限元方法,分别建立汽车前部结构以及小腿冲击器的有限元模型,并采用LS-DYNA软件模拟人车碰撞过程,选取不同的泡沫密度进行仿真模拟,并且与试验进行对比。结果表明,降低保险杠泡沫密度后,汽车前部结构对行人的伤害明显降低,该结论可为汽车前部保险杠的设计提供参考。In recent years, with the rapid development of China＇s automobile industry, the pedestrians death rate in traffic accidents is gradually increasing, pedestrian protection has caused widespread concern as an emerging fields of automotive safety. In order to reduce pedestrians injury in trafftc accidents, the finite element model of the front structures of the vehicle and leg impactor is built, and the finite element analysis software LS-DYNA is applied to simulate the process of the vehicle- pedestrian collisions with different foam densities bumper, and compared with the test results. The results show that the lower bumper lower pedestrian leg protection peoCormance after foam density is better than the original bumper, and the results can provide a reference for the antomotive front bumper design.

关 键 词：行人腿部保护 碰撞模拟 泡沫密度 LS—DYNA 

分 类 号：TH16[机械工程—机械制造及自动化]