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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。
In order to reduce the difficulty of simulation reproduction in multi-car collision and ensure the reliability of reproduction results, a step-by-step method based on Pc-Crash is presented. The method divides the multi-car collision process into a plurality of independent two-car collision processes. After the initial two-car collision process is simulated, the movement parameters after the two-car collision are respectively obtained, thereby defining a new two-car collision simulation process and repeating This step, until all the relevant traces in the simulation coincide with the scene of the accident so far. A case of simulated 3-car collision was reproduced. The results show that Pc-Crash-based method of accident reproduction simulation can be used to simulate the reproduction of multi-vehicle collision accidents, and the trajectories of simulation vehicles and the degree of damage are consistent with the actual situation.