上海交通大学学报

上海交通大学学报（自然版）

• 金属学与金属工艺 • 上一篇    下一篇

轴承钢硬切削表面残余应力对滚动接触界面疲劳寿命的影响

李振1，张相琴，张雪萍1，LIU C Richard2
  

  1. (1. 上海交通大学 机械与动力工程学院， 上海 200240；2. 美国普渡大学 工业工程系， West Lafayette, 47907）
  • 收稿日期:2010-01-07 修回日期:1900-01-01 出版日期:2011-01-27 发布日期:2011-01-27

Rolling Contact Fatigue Life Prediction on Bearing Steel Pre-residual Stress Surfaces Induced by Hard Turning

LI Zhen１,ZHANG Xiangqin1，ZHANG Xueping1,LIU C Richard2
  

  1. （1. School of Mechanical Engineering，Shanghai Jiaotong University， Shanghai 200240， China;2. Industrial Engineering, Purdue University, West Layfayette 47907, USA)
  • Received:2010-01-07 Revised:1900-01-01 Online:2011-01-27 Published:2011-01-27

摘要： 为了预测轴承钢硬切削表面残余应力对滚动接触寿命的影响规律，基于高级非线性有限元分析软件MARC，建立了具有平面应变特征的二维滚动接触寿命预测模型，并在二维有限元模型的表面和次表面对应施加了轴承钢硬切削实验所测残余应力，模拟计算典型服役条件下的滚动接触应力；采用基于SN寿命理论的Miner法则，计算轴承钢滚动界面的疲劳接触寿命，分析了在不同摩擦系数、滚动接触频率和外加载荷工况下，硬切削残余压应力对疲劳寿命的影响.结果表明，硬切削残余压应力可使轴承钢的滚动接触疲劳寿命提高10％~30％.其中，载荷对滚动接触疲劳寿命影响最大，摩擦系数的影响最小.

关键词: 轴承钢, 硬切削, 残余应力, 滚动接触, 疲劳寿命

Abstract: To predict the effect of the hard turninginduced residual stress on the rolling fatigue life of bearing steel, 2D rolling contact fatigue life model characteristic with plane strain was developed based on MARC. The residual stress on the machined surface and subsurface from the hard turning bearing steel was applied to surface and subsurface of 2D model correspondingly. The rolling contact stress distribution was simulated under the typical services, and the rolling fatigue life of contact interface was predicted by Miner law based on the SN life theory under compressive stress. After the analysis of rolling fatigue life under different conditions, the effect of different friction, rolling velocity, load on fatigue life with hard turninginduced residual stress was quantitatively investigated. The investigation shows that the hard turninginduced compressive residual stress increases 10%—30% the rolling fatigue life of bearing steel, and the load has the greatest effect on rolling fatigue life while the fiction coefficient has the minimal effect.

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