基于有限元的圆柱滚子轴承接触应力精确计算方法  

Accurate Calculation Method for Contact Stress of Cylindrical Roller Bearings Based on Finite Element

作　　者：武昭婷 王妍[1,2] 韩清凯 吕杭原[1,2] 林君哲 WU Zhaoting;WANG Yan;HAN Qingkai;LYU Hangyuan;LIN Junzhe(Foshan Graduate School of Innovation,Northeastern University,Foshan 528312,China;School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学佛山研究生创新学院,广东佛山528312 [2]东北大学机械工程与自动化学院,沈阳110819

出　　处：《轴承》2025年第4期29-34,共6页Bearing

基　　金：国家重点研发计划资助项目(2023YFB3406100);辽宁省“揭榜挂帅”科技重点专项(2022JH1/10800057)。

摘　　要：航空发动机圆柱滚子轴承内部滚子与内、外圈之间的接触应力对其服役性能至关重要,目前有限元法已成为分析轴承内部接触应力的有效方法之一。针对有限元仿真精度和仿真效率的平衡问题,以NU2209圆柱滚子轴承为研究对象,基于Abaqus软件建立轴承有限元模型,分析了细化区域内单元网格尺寸对滚子与滚道之间接触应力的仿真精度以及仿真效率的影响,在此基础上进一步考虑滚子与滚道之间接触载荷的影响,最终得到了接触载荷与单元网格尺寸之间的拟合公式,并以NU2208,NU2209以及NU2212圆柱滚子轴承为例进行验证,Mape值均小于10%,证明了公式的有效性和普适性。The contact stress between internal rollers and inner and outer rings of cylindrical roller bearings for aeroengines is crucial to their service performance.Currently,the finite element method has become one of the effective methods for analyzing the internal contact stress of the bearings.In order to balance the accuracy and efficiency of finite element simulation,the NU2209 cylindrical roller bearing is taken as research object.A finite element model is established based on Abaqus software,and the influence of element grid sizes in refined area on simulation accuracy and efficiency of contact stress between roller and raceway is analyzed.On this basis,the influence of contact load between roller and raceway is further considered,and the fitting formula between contact load and element grid sizes is finally obtained.Taking NU2208,NU2209 and NU2212 cylindrical roller bearings as examples for verification,the Mape values are all less than 10%,proving the effectiveness and universality of the formula.

关 键 词：滚动轴承 圆柱滚子轴承 航空发动机 有限元法 接触应力 精度 效率 

分 类 号：TH133.332[机械工程—机械制造及自动化] V232.2[航空宇航科学与技术—航空宇航推进理论与工程]