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Rolling Contact Fatigue Life Prediction on Bearing Steel Pre-residual Stress Surfaces Induced by Hard Turning
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LI Zhen１,ZHANG Xiangqin1，ZHANG Xueping1,LIU C Richard2
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（1. School of Mechanical Engineering，Shanghai Jiaotong University， Shanghai 200240， China;2. Industrial Engineering, Purdue University, West Layfayette 47907, USA)
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Abstract To predict the effect of the hard turninginduced 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 SN 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 turninginduced residual stress was quantitatively investigated. The investigation shows that the hard turninginduced 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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Received: 07 January 2010
Published: 27 January 2011
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