铝合金车轮冲击特性有限元分析

铝合金车轮在使用前必须进行冲击试验,本文以某款规格"18×7 J"车轮为例介绍有限元技术在分析冲击问题中的应用。在有限元分析时建立包括冲击块、车轮、轮胎、安装底座在内的完整力学模型。通过对整个冲击过程的数值模拟,得到车轮各时刻的应力分布云图和冲击块的速度与位移变化曲线。考虑冲击载荷对材料性能的影响,对车轮进行性能评估,分析结论得到了台架试验验证。

FEA of Impact Characteristic of Aluminum Disc Wheel

Aluminum disc wheels have to pass impact test before going into production.Impact test of "18×7J" wheel is analyzed with CAE technology,representing the application of finite element method on simulation of impact problems.In the numerical simulation of wheel impact test,integrated finite element model is established,including impact block,wheel,tire and bracket.The whole process of impact is simulated,and continuous stress distribution of the wheel and velocity and displacement curves of impact block are obtained.The influence of impact load on material is considered.Performance of the wheel is assessed according to the analysis results,which is validated by the physical experimentation.