高转速下角接触球轴承接触应力分布特征与疲劳剥落关系研究  

Study on Relationship between Contact Stress Distribution Characteristic and Fatigue Spalling of Angular Contact Ball Bearing at High Speed

作　　者：万超 张亢[1,2] 田泽宇 陈向民 李录平 Wan Chao;Zhang Kang;Tian Zeyu;Chen Xiangmin;Li Luping(School of Energy and Power Engineering,Changsha University of Science&Technology,Changsha 410076,China;Hunan Province 2011 Collaborative Innovation Centre of Clean Energy and Smart Grid,Changsha 410114,China)

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410076 [2]清洁能源与智能电网湖南省2011协同创新中心,湖南长沙410114

出　　处：《机械传动》2021年第8期38-44,69,共8页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51305046,51405033);湖南省自然科学基金(2018JJ3541)。

摘　　要：疲劳剥落是轴承的主要失效形式之一,而轴承中滚动体与滚道间接触应力的变化是造成轴承疲劳剥落的重要因素。以角接触球轴承为研究对象,在经典拟静力学模型的基础上,考虑高转速工况下滚动体受惯性力的影响,构建轴承内部几何关系和受力平衡关系式,通过数值方法求解该模型,得到轴承在高转速工况下的特征参数,并将其与相关文献对比,验证了模型的准确性。在此基础上,分别控制轴向力、径向力以及转速,研究轴承在特定工况下接触应力的分布特征及变化情况,得到外载荷和转速的变化与轴承疲劳剥落之间的关系,为减轻轴承的疲劳剥落提供了一定的技术指导。Fatigue spalling is one of the main failure forms of bearing,and the change of contact stress be⁃tween rolling body and raceway is an important factor causing fatigue spalling of bearing.Taking the angular con⁃tact ball bearing as study object,based on the classical pseudo-statics model,considering the effect of inertia force on the rolling body under the condition of high rotation speed,the internal geometry relationship and force balance relationship expression of angular contact ball bearings are built,the characteristic parameters of the bearing at high speed are obtained through solving the model by numerical method.The accuracy of the model is verified by comparing the characteristic parameters to the literature.On this basis,the axial force,the radial force and the speed of rotation are respectively controlled,and the distribution characteristics and changes of the contact stress of the bearing under special working conditions are studied,and the relationship between the variation of the external load and the speed of rotation and the fatigue spalling of the bearing is obtained,which provides certain technical guidance for reducing fatigue spalling of bearing.

关 键 词：角接触球轴承 拟静力学模型 接触应力 惯性力 疲劳剥落 

分 类 号：TH133.3[机械工程—机械制造及自动化]