车辆-行人碰撞中颅脑伤及动力学响应的研究  

A Study on the Head-Brain Injuries and the Dynamic Responses of a Pedestrian in Vehicle Collisions

作　　者：杨济匡[1] 李凡[1] 李莉[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2007年第7期30-34,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(10472031)

摘　　要：采用多体动力学软件开发建立的车辆行人碰撞仿真模型,模拟了碰撞事故中行人的动态响应,确定和分析了颅脑损伤相关的主要碰撞生物力学参数以及影响颅脑损伤的汽车前部结构主要设计参数.研究结果表明,限制车辆行驶速度、适当减小汽车前部结构刚度以及适当提高发动机盖缘高度可以很大程度上降低行人的颅脑损伤.A newly developed and validated multi-body model was used to simulate vehicle-pedestrian collisions and to study the dynamic responses of the pedestrians. The biomechanical parameters related to head-brain injuries and the variables of vehicle-front design were determined and analysed. The results showed that restricted vehicle speed, lowered stiffness of vehicle front structure and raised hood edge height could result in fewer head injuries.

关 键 词：数学模型 行人 颅脑伤 多刚体动力学 碰撞仿真 

分 类 号：U461[机械工程—车辆工程]