自行车-厢式客车碰撞形态对骑车人头部损伤的影响

Effects of Bicycle-Van Collision Form on Cyclist's Head Injury

为探究自行车与厢式客车不同碰撞形态对骑车人头部损伤的影响,以一例真实事故案例为基础,利用PC-Crash仿真软件建立事故碰撞模型,并验证模型的可行性。在此基础上进行计算机仿真试验。通过研究两者在不同速度下的四种碰撞形态(自行车前轮、后轮分别与厢式客车前部碰撞及两车碰撞重叠率为50%和100%),分析骑车人头部的损伤情况。结果表明:骑车人头部HIC值随厢式客车速度的增大而增大;自行车前轮与厢式客车碰撞情况下,自行车速度越大,骑车人头部损伤越重;自行车后轮与厢式客车碰撞情况下,自行车速度越大,骑车人头部损伤越轻;碰撞重叠率50%和100%情况下,自行车速度对骑车人头部损伤影响不大。

In order to study the influence of different collision patterns of bicycle-van collision form on the head injury of the cyclist,an accident collision model based on a real accident was established,with the verification of its feasibility by PC-Crash stimulation software. On the basis,the computer simulation experiment was carried out to analysis the damage of cyclist＇s head by researching the four different collision forms（ the front wheel or the rear wheel of the bicycle was collided with the front of the van,and the overlap rate between two participants was respectively 50% and 100%） at different collision speed of the two participants. The results show that the HIC value of the cyclist＇s head increases with the speed of the van. In the condition of the van collided with the from wheel of the bicycle,there is a positive correlation between the bicycle speed and the severity of head injury. And within the condition of the van collided with the rear wheel of the bicycle,the correlation is negative. Besides,in the case of50% and 100% collision overlap rate,the speed of the bicycle has little effect on the head injury of the cyclist.