弹流润滑中圆柱滚子轴承接触体内应力分析  

Stress Analysis Within Contact Body of Cylindrical Roller Bearing Based on Elasto-Hydrodynamic Lubrication

作　　者：郑学普[1] 杜辉[1] 

机构地区：[1]河南科技大学机电工程学院,洛阳471003

出　　处：《机械设计与研究》2009年第3期56-59,共4页Machine Design And Research

基　　金：国家"十一五"科技攻关资助项目(JPPT-115-189);河南科技大学校基金资助项目(2006ZY039)

摘　　要：基于现代弹性流体动力润滑理论和弹性力学理论,建立了高速圆柱滚子轴承非等温时变的弹流分析模型、轴承套圈与滚动体接触时接触体内应力分析仿真模型。用数值分析方法对模型求解,并用Tecplot软件对轴承接触体内应力分布进行仿真。仿真结果分析表明,弹性流体动力润滑中轴承速度及其所受载荷是影响轴承接触体内部应力分布的主要因素;在不考虑其它因素情况下,接触区内中部靠接近表面的区域接触应力最高,改善接触体表面压力,可以有效改善接触体内等效应力分布。Based on theory of modern elasto-hydrodynamic lubrication（EHL） and elasticity, non-isothermal and transient EHL analysis model in high-speed cylindrical roller beating has been established, and stress analysis simula- tion model within contact body when normal contact load exists between bearing cage and rolling elements also has been built. These models are solved with numerical analysis. Stress distribution within contact body is simulated by Tecplot software. Simulation results show that the beating rotational velocity and its load are key factors influencing stress distri- bution within contact body of bearing in EHL; the highest is contact stress in the middle part of contact area that is close to the surface. Equivalent stress distribution within contact body may be ameliorated effectively by changing pres- sure on the surface of contact body.

关 键 词：圆柱滚子轴承 弹性流体动力润滑 应力分析 

分 类 号：TH133.3[机械工程—机械制造及自动化]