轿车轮毂轴承力学性能分析  

Car Wheel Hub Bearing Mechanics Performance Analysis

作　　者：王伟[1] 林棻[1] 张尧文 朱为文 

机构地区：[1]南京航空航天大学车辆工程系,江苏南京210016

出　　处：《机械设计与制造》2014年第3期192-195,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(10902049);中国博士后科学基金资助项目(2012M521073)

摘　　要：针对轮毂轴承开展合理精确的有限元分析,对轮毂轴承的开发具有重要意义。以某型轿车第三代驱动轮轮毂轴承单元作为研究对象,采用Hypermesh建立与轮毂轴承转弯工况相等效的有限元模型,导入ANSYS求解分析轮毂轴承单元的力学性能。将力矩刚性仿真结果与试验结果进行比对,误差控制在8%以内,二者具有较好的一致性,验证了有限元模型的正确性。仿真结果表明,轮毂轴承单元的刚度与外加载荷基本成线性关系;在极限转弯工况下,轮毂轴承所受最大等效应力位于滚子与法兰的接触部位,但未超过材料的强度极限,因此符合安全需要。该研究为轮毂轴承的开发及优化设计提供了参考依据。Wheel hub bearing unit is one of the key components of cars bearing and precision-oriented.Conducting reasonable and accurate finite element simulation analysis for wheel hub bearing unit has important significance for the development of wheel bearings.Taking the third generation driving wheel hub bearing of a certain type of car as a research object,the finite element model is established by Hypermesh based on the actual cornering conditions model of wheel hub bearing,and then imported ANSYS to solve its strength and stiffness.Compared with results tested by rigid torque testing machine,the error is controlled in less than 8％.They have a high level of consistency.It verifies the correctness of the finite element model.And the stiffness of the wheel hub bearing unit load is basically a linear relationship with the load.In extreme cornering conditions,wheel bearings suffer the maximum equivalent stress which in the contact area of the roller with flange.But the stress does not exceed the ultimate strength of the material,and therefore meet the security needs.It provides the important reference for the research and optimization of hub bearing.

关 键 词：轿车轮毂轴承 有限元分析 强度 刚度 

分 类 号：TH16[机械工程—机械制造及自动化] U463.2[机械工程—车辆工程]