矿用自卸车车架的有限元分析及优化设计

根据某大型矿用自卸车车架的结构样式,建立了车架的有限元模型,并采用惯性释放法计算出不同工况下的车架应力分布情况。同时,对矿山上运行的矿车车架进行了应力测试。对比车架应力分布的实验结果和仿真结果,发现车架的应力误差基本上控制在10%以内,从而验证了有限元分析车架应力的有效性。为了改善车架的性能,设计了车架拓扑结构,并通过结构优化,得到了可靠的车架结构,最后通过仿真分析验证了改进后的车架性能有了大幅度提高。

Finite Element Analysis on Mining Dump Truck Frame and Its Optimization Design

The finite element model is established based on a large mining dump truck frame structure, and the stress distribution of frame under different working conditions are computed by the inertial release method. Meanwhile the stress test on the operating car frame of mine is conducted. The test result and simulated result are compared and it is found that the frame stress error is controlled within 10%, thereof the validity of finite element analysis of the frame stress is verified. In order to improve the performance of the frame, the topology structure is designed and a reliable frame structure is obtained through structure optimization. The simulation results show that the performance of the improved frame is greatly improved.