面向某纯电动汽车后悬架系统 的副车架耐久性开发

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中图分类号：U463.32 文献标识码：A 文章编号：1003-8639（2025）10-0092-04

【Abstract】 Taking an aluminum-made rear subframe of some Battery Electrical Vehicle as the research object; Firstly，avehicle multi-bodydynamic model is built in ADAMSsoftware，theroad load database is input，andthe VPG （Virtual Proving Ground）technology isappliedtoobtaintheload spectrumof the4 whel hubs，thenthe modelisimported back to ADAMS torunarigid-flexible coupled multi-bodydynamic modelofthe subframe and suspension，soas to figure out the load spectrum ofeachnodeofthesubframe; InHyperMesh，arear subframe model is createdforstatic analysis including meshing，materialset-upand constraints &loads configuration etc.，andthrough Abaqus solver to calculate the strength，stiffess and model; In nCode fatigue simulation is carriedout.Through selecting the properraw material & its heat treatment process，optimizing the product structure，conducting the components'design for manufacturing analysis andbench validation etc.，to continuously iterate the productdesign until the achievement offatigue target.

【Key Words】rear subframe; multi-body dynamics；fatigue analysis;bench test

0 引言

随着中国新能源汽车的蓬勃发展，纯电动汽车市占率不断提升，截至2025年4月份，新能源汽车市场渗透率达到 51.5% ；当月新能源乘用车产量为115.1万辆，纯电动汽车销量为74.3万辆，纯电动汽车销量占新能源汽车总销量的 64.5%[1] ，国内市场完成了新能源汽车和传统燃油汽车双轨发展。（剩余3478字）