汽车驱动桥主减速器支承刚度的有限元分析  

Finite Element Analysis on the Support Stiffness of Final Drive in Vehicle Drive Axle

作　　者：周驰[1] 彭钱磊[1] 丁炜琦 桂良进[1] 范子杰[1] 

机构地区：[1]清华大学,汽车安全与节能国家重点实验室,北京100084 [2]陕西汉德车桥有限公司,西安710201

出　　处：《汽车工程》2016年第8期981-988,共8页Automotive Engineering

基　　金：校企合作重大科研项目(20142000237)资助

摘　　要：考虑了差速器轴承盖与桥壳的接触非线性,建立了包含传动轴系、滚子轴承和壳体的整个驱动桥非线性有限元模型,以进行差速器轴承盖与桥壳接触状态的准确仿真和驱动桥主减速器支承刚度的准确计算。进一步对比了不同接触仿真方法求得的测点变形,分析了差速器轴承盖与桥壳接触非线性对驱动桥主减速器支承刚度的影响。进行了驱动桥主减速器支承刚度试验,分别测量了正、反转工况下主减速器测点变形。有限元分析与试验结果吻合良好,验证了驱动桥系统建模和有限元分析的正确性。With consideration of the contact nonlinearity between bearing caps and axle housing,a nonlinear finite element model for complete drive axle is built to conduct the accurate simulation on the contact state between bearing caps and axle housing and the accurate calculation of support stiffness of final drive. Then the deformations of measured points obtained by different contact simulation methods are compared,and the effects of contact nonlinearity between bearing caps and axle housing on the support stiffness of final drive are analyzed. A test on the supporting stiffness of final drive is performed to measure the deformations on the measured points of final drive under both forward and reverse rotation conditions respectively. The results of simulation well agree with test data, verifying the correctness of modeling and finite element analysis of drive axle system.

关 键 词：驱动桥 支承刚度 有限元分析 差速器轴承盖 接触非线性 

分 类 号：U463.218[机械工程—车辆工程]