基于行人保护的轿车前部造型特征研究

Study on Sedan Frontal Styling Features Based on Pedestrian Protection

以汽车造型特征为研究对象,提取了紧凑型轿车前部造型特征线进行统计分析和参数化研究,通过建立基于特征和特征线的轿车造型特征参数描述模型,赋予造型特征以碰撞安全属性。建立了轿车与行人碰撞的多刚体模型并进行了仿真实验研究,根据仿真结果数据构造二次回归模型分析轿车前部造型特征对行人损伤的影响,并进行了参数优化。研究结果表明:拥有宽大且低矮的保险杠、较高及坡度平缓的发动机罩前缘且发动机罩长度适中的轿车前部造型有利于行人保护。

Car styling features were taken for study herein. The front styling features of a compact sedan were extracted for statistical analysis and parametric study. Sedan styling feature parameter de- scription model was created by the styling feature and feature line,to give the styling feature of crash safety properties. Then a multi--rigid body model of the sedan--to--pedestrian crashes was developed for simulation tests. According to the simulation results, quadratic regression equation for pedestrian protection was constructed to analysis the affection of the sedan front styling features to pedestrian in- jury,and parameter optimization was done. Simulation results show that sedan front styling with leni- ency and low bumpers, high and steep leading edge of the hood and moderate length of the hood are conducive to pedestrian protection.