用于交通事故分析的汽车碰撞模型

Research on the calculation models of vehicle collision for analyzing traffic accidents

随着汽车总量的增长,我国已成为交通事故发生频率最高的国家之一。根据事故现场痕迹结合汽车碰撞规律判定汽车碰撞前车速,已成为事故鉴定和汽车安全性研究的重要课题。文章分别在动力学和刚度分析的基础上建立了一维碰撞的速度模型,阐述了二维碰撞运动模型,并通过对一个正面碰撞案例的验证说明了刚度分析法的合理性与实用性。

With the increase of the vehicle amount, traffic accident occurrence frequency in China has risen. To determine the velocity before collision according to the trace in a traffic accident locale and the regularity of vehicle collision has become an important task in accident identification and vehicle security research. Based on the analysis of dynamics and stiffness, the calculation models of velocity in one dimesional vehicle collision are established respectively, and the calculation model of dynamics in two dimesional vehicle collision is expounded. A face-to-face collision case is analyzed by using the Stiffness analysis method,which proves the rationality and practicability of the method.