基于PAM-CRASH的鸟撞风挡有限元分析

摘要

基于有限元分析软件PAM-Crash及其提供的SPH法，建立了鸟撞风挡的有限元模型。对鸟击风挡进行了有限元分析，仿真结果显示SPH鸟体能够很好地模拟鸟撞风挡的过程，尤其是鸟体破碎和飞溅的情况；确定了风挡可能产生塑性应变的位置；选取多个撞击位置，得出不同撞击位置产生的塑性应变云图，并进行比较分析，得出撞击位置对于风挡的影响。%A finite element model for the bird-impact of windshields was established by the dynamic ex-plicit finite element analysis software PAM-crash and the smoothed particle hydrodynamics ( SPH) meth-od.The finite element analysis of bird-impact was simulated by the established model .The simulation in-dicate that the SPH bird can correctly show the process of impact ,especially the breaking-up and splas-hing of the bird .The position where plastic strain could develop was confirmed .The influence of the im-pacting location was obtained by analyzing the plastic strain contours of different locations of bird -im-pact .