小客车保险杠低速碰撞仿真研究

The research on the low-velocity crash simulation of passenger car bumper

在低速碰撞过程中 ,保险杠发挥了举足轻重的地位。根据保险杠低速碰撞的法规要求 ,应用显式动力有限元分析软件ANSYS/LS -DYNA ,对某型小客车的保险杠系统进行了低速碰撞仿真研究。通过对变形情况 ,速度、加速度时间历程曲线的结果进行分析研究 ,对该型保险杠性能的进一步改进提出了建议。

Bumpers play a very important role during a low velocity crash. According to the bumper crashing regulation,8km/h low velocity impact simulation of the bumper system of a type of passenger car is conducted,with an explicit dynamic FEM analysis software ANSYS/LS DYNA3D.After carefully analyzing the bumper deformation and dynamic characteristics,suggestions are given on how to improve the crashworthiness of the bumper.