中文摘要：

为降低多车碰撞事故仿真再现的难度并确保再现结果的可靠性,建立基于Pc-Crash的事故再现仿真分步方法。该方法将多车碰撞过程划分为多个独立的2车碰撞过程,对最开始的2车碰撞过程进行仿真后分别获得2车碰撞后的运动参数,进而定义新的2车碰撞仿真过程,重复此步骤,直至仿真中所有相关痕迹与事故现场痕迹相吻合为止。仿真再现一例3车碰撞事故。结果显示,基于Pc-Crash的事故再现仿真分步方法可用于仿真再现多车碰撞事故,且仿真车辆运动轨迹和损坏程度等痕迹均与实际情况相吻合。

英文摘要：

For the sake of reconstructing a multiple vehicle collision accident more easily and obtaining a more reliable reconstruction result,a stepwise simulation method was worked out based on Pc-Crash. In the stepwise simulation method,the whole collision process was divided into many independent vehicle-vehicle collision processes firstly,and then the first vehicle-vehicle collision process was simulated,after that,new simulation was defined and the next vehicle-vehicle collision process was simulated; these two step circulated again and again until all vehicle-vehicle collision processes were simulated and all traces in simulation are consistent with the reality. A three vehicle collision accident was reconstructed by using the sub-step method. The results indicates that the multiple vehicle collision accident can be reconstructed by this method and all traces in the simulation are consistent with the reality.