轴承内圈沟道磨削热应力场有限元仿真分析  

Finite Element Simulation Analysis of Thermal Stress Field During Grinding of Bearing Inner Race Raceway

作　　者：张莹 王德祥 郭峰 栗心明 ZHANG Ying;WANG Dexiang;GUO Feng;LI Xinming(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China;Shandong Zhilian Community Bearing Technology Co.,Ltd.,Liaocheng 252664,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266520 [2]山东智连共同体轴承科技有限公司,山东聊城252664

出　　处：《轴承》2024年第6期31-37,共7页Bearing

基　　金：山东省自然科学基金资助项目(ZR2022ME208)。

摘　　要：针对轴承套圈滚道磨削加工时过大的热应力会导致滚道表层产生热损伤的问题,联合ABAQUS及Hyper-Mesh建立B7008C角接触球轴承内圈沟道磨削热应力场有限元模型,开发DFLUX子程序减少模型分析步的数量,克服了网格数量庞大导致磨削热源无法沿沟道整周移动的问题,揭示了内圈沟道磨削热应力场的形成机制与演化规律,得到了内圈沟道表层产生残余拉应力的临界温度,并分析了工艺参数对内圈沟道残余拉应力分布的影响,结果表明:只有当磨削热应力超过材料的屈服强度时,内圈沟道表层才会产生残余拉应力,产生残余拉应力的临界温度约为420℃;随着热流密度的增大及工件转速的减小,内圈沟道表层的残余拉应力和分布深度增大。To address the problem that excessive thermal stress during grinding of bearing ring raceway will lead to thermal damage on surface layer of the raceway,a finite element model of thermal stress field during grinding of inner ring raceway of B7008C angular contact ball bearing is established by combining ABAQUS and Hyper Mesh.The number of model analysis steps is reduced by developing DFLUX subroutine,which overcomes the problem that the grinding heat source cannot move along entire circumference of the raceway due to large number of meshes.The formation mechanism and evolution law of thermal stress field during grinding of inner ring raceway are revealed,the critical temperature for generating residual tensile stress on surface layer of inner ring raceway is obtained,and the influence of process parameters on distribution of residual tensile stress on inner ring raceway is analyzed.The results show that only when the grinding thermal stress exceeds yield strength of material,the residual tensile stress will be generated on surface layer of inner ring raceway,and the critical temperature for generating residual tensile stress is about 420℃;with the increase of heat flow density and the decrease of rotational speed of workpiece,the residual tensile stress on surface layer of inner ring raceway and the depth of distribution increase.

关 键 词：滚动轴承 角接触球轴承 滚道 磨削 热应力 残余应力 热流密度 转速 

分 类 号：TH133.331[机械工程—机械制造及自动化] TP391.9[自动化与计算机技术—计算机应用技术]