正交试验设计辅助Pc-Crash实现事故再现分析

目的利用Pc-Crash实现事故再现分析时,探索由参数敏感性分析方法确定那些对仿真结果有显著影响的参数,通过对这些参数进行合理处理尝试提高仿真结果的精度。方法引入基于正交试验设计的参数敏感性分析方法。结果将此方法应用到Pc-Crash优化计算器内参数敏感性分析的实践中,获得了对碰撞后车辆运行轨迹有影响显著的参数。通过对一实际碰撞试验的再现研究,验证了敏感性分析所得结论在指导优化参数选取方面的有效性。结论研究表明借助正交试验设计辅助Pc-Crash实现事故再现分析具有实用价值。

Orthogonal Experiment Design Pc-Crash to Reconstruct Traffic Accident

Parameters effecting on the simulation results were determined by the parameter sensitivity analysis,and these parameters should be handled rationally to increase the precise of simulation results using Pc-Crash to reconstruct accidents.A parameter sensitivity analysis method based on orthogonal design was introduced,and then sensitivity of parameters in PcCrash’s optimizer was analyzed by this method,parameters have significantly influence on vehicle trajectory after impact were obtained.The feasibility of the selection of optimizational parameters under the direction of conclusions obtained from sensitivity analysis was validated by reconstructing a true vehicle-vehicle impact test.The study results show that the use of the orthogonal design has practical value to assist Pc-Crash to reconstruct traffic accident.