基于SPH方法的汽车涉水仿真及部件强度优化

Vehicle wading simulation and component optimization based on SPH method

基于光滑粒子流体动力学(smoothed particle hydrodynamics,SPH)方法,对简化的汽车悬架模型进行涉水仿真。结果显示涉水池中整体流态与试验相匹配,且油箱护板受力区域与试验失效情况吻合。根据仿真情况提出部件优化方案,结果表明:优化方案能有效降低部件受力,增强局部结构强度,解决部件失效问题。

Based on smoothed particle hydrodynamics(SPH)method,a simplified vehicle suspension model is wading simulated.The simulation results show that a good agreement with test results in terms of wading channel water flow pattern,and fuel tank shield force distribution matches the component failure mode.Some structural optimization schemes are proposed by simulation results.The results show that the structural optimization schemes can effectively reduce the force on components,enhance the local structural strength,and solve the failure problem of components.