重庆大学学报2017，Vol.40Issue(4)：1-8,8.DOI:10.11835/j.issn.1000-582X.2017.04.001
面向行人安全的保险杠结构改进优化
Bumper structure optimization for pedestrian leg protection
摘要
Abstract
A finite element collision model was established to simulate the collision between pedestrian's lower leg and a car,and it was verified through experiment.In order to improve the performance of pedestrian protection,auxiliary bumper and energy-absorption foam were added in the car.With taking the thickness of energy-absorption foam,the vertical distance between bumper and auxiliary bumper and the thickness of auxiliary bumper as design variables,an optimized Latin hypercube experiment was conducted.The response surface model (RSM) for the injury index of leg was fit with experimental data by using the least square method,and the optimal design parameter of bumper was solved by multi objective genetic algorithm (MOGA).The results indicate that the injury of the pedestrian leg is reduced effectively by using the optimal structure,which meets the safety requirements.关键词
行人安全/保险杠/拉丁超立方/多目标遗传算法Key words
pedestrian safety/automobile bumper/Latin hypercube/MOGA分类
交通工程引用本文复制引用
徐中明,吕伟东,夏小均,赖诗洋,张志飞..面向行人安全的保险杠结构改进优化[J].重庆大学学报,2017,40(4):1-8,8.基金项目
中央高校基本科研业务费科研专项(CDJZR14115501).Supported by Fundamental Research Funds for the Central Universities(CDJZR14115501). （CDJZR14115501）
