滚动轴承内圈滚道表层残余应力分布实验研究  

Experimental study on residual stress distribution in surface layer of rolling bearing inner ring raceway

作　　者：王德祥[1] 葛培琪[1,2] 毕文波[1] 郑传栋 

机构地区：[1]山东大学机械工程学院,山东济南250061 [2]山东大学高效洁净机械制造教育部重点实验室,山东济南250061

出　　处：《华中科技大学学报（自然科学版）》2015年第3期12-16,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2011CB706600)

摘　　要：以B7008C/P4滚动轴承内圈滚道为例,将剥层与X射线衍射法相结合,测量了轴承内圈滚道表层残余应力分布状态,并采用有限元法分析了剥层造成的应力释放,修正了残余应力测量值.研究结果表明:当滚道表层剥除厚度为微米级时,残余应力测量值与修正值之间的最大相对误差为3.9%,并且随着剥除厚度的增大,应力释放效果愈加明显.国内外同型号(B7008C/P4)轴承对比分析表明:国外轴承内圈滚道表面残余压应力更大,近表层残余压应力的剧烈变化深度更大,更有利于提高轴承的疲劳寿命.Taking the B7008C/P4 bearing inner ring raceway for example ,the residual stress distribu‐tions in the surface layers were measured by layer removal and X‐ray diffraction .Finite element meth‐od was used to analyze the stress relaxation due to layer removal ,which can correct the stress meas‐urements .The results show that the maximum relative error between measured residual stress and corrected residual stress is 3 .9% ,w hile the thicknesses of the removed layers are micron scale .Be‐sides ,the errors increase with the increasing thicknesses of removed layers .The comparative analysis between domestic and foreign B7008C/P4 bearings show that the foreign bearing inner ring raceways have greater surface compressive residual stress and deeper depth of severely reduced compressive re‐sidual stress ,w hich is more conducive to improve bearing fatigue life .

关 键 词：残余应力 应力释放 应力分布 实验研究 轴承滚道 剥层 

分 类 号：TH133.33[机械工程—机械制造及自动化]