电动汽车驱动桥壳轻量化设计  

Lightweight design of electric vehicle drive axle housing

作　　者：张宁[1,2] 王若琦 ZHANG Ning;WANG Ruoqi(College of Agricultural Engineering,Shanxi Agricultural University,Jinzhong 030801,Shanxi,China;Shanxi Key Laboratory of Key Technologies and Equipment for Dryland Agricultural Machinery,Shanxi Agricultural University,Jinzhong 030801,Shanxi,China)

机构地区：[1]山西农业大学农业工程学院,山西晋中030801 [2]山西农业大学旱作农业机械关键技术与装备山西省重点实验室,山西晋中030801

出　　处：《农业装备与车辆工程》2024年第5期33-37,共5页Agricultural Equipment & Vehicle Engineering

基　　金：山西省基础研究计划项目“荞麦脱壳机理与脱壳装置性能试验研究”(20210302124372);山西农业大学科技创新基金“谷子机械分离过程物料动力学性质研究”(2018014)。

摘　　要：为降低某型电动汽车驱动桥壳的质量,建立了电动汽车驱动桥壳的三维建模并进行有限元分析;对最大垂向力、最大牵引力、最大制动力和最大侧向力4种典型工况进行仿真分析,结果表明,在4种工况下强度和刚度均符合要求,并存在一定余量;对桥壳进行模态分析,获取7~12阶固有频率和相应模态振型,采用响应面法对驱动桥壳进行轻量化设计。优化后驱动桥壳的整体质量降低了14.86%,与优化前静力和模态分析结果对比验证,强度、刚度及振动特性均满足要求,证明了优化方法的有效性。In order to reduce the mass of the drive axle housing of a certain type of electric vehicle,the 3D modeling of it was established and the finite element model analysis was conducted.For the drive axle housing of electric vehicle,four typical working conditions of simulation analysis were carried out,including maximum vertical force condition,maximum traction condition,maximum braking force condition and maximum lateral force condition.The results showed that in these four conditions,the strength and stiffness met the requirements,and there was a certain margin.Mode analysis of the bridge shell was conducted to obtain the natural frequency of seven to twelfth orders and the corresponding mode patterns.Finally,the response surface method was used to lightweight design in the drive axle housing.The optimized total mass of the drive axle housing was reduced by 14.86%.Compared with the results of static and mode analysis before optimization,the strength,stiffness and vibration characteristics met the requirements,proving the effectiveness of the optimization method.

关 键 词：驱动桥壳 轻量化 有限元分析 

分 类 号：U463.218.5[机械工程—车辆工程]