Effect of material defects on crack initiation under rolling contact fatigue in a bearing ring

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• 作者：Lin Hua ; Song Deng ; Xinghui Han ; Song Huang
• 关键词：Bearing ring ; Material defects ; Rolling contact fatigue ; Stress intensity factors
• 刊名：Tribology International
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：66
• 期：Complete
• 页码：315-323
• 全文大小：3199 K

文摘

The effects of material defects such as pores on the crack initiation under rolling contact fatigue (RCF) in a bearing ring are investigated here. First, the main contact position between the ball and the raceway surface is investigated, and the effect of the depth of the pore on the crack initiation is analyzed. Second, several parameters, such as radial load, surface traction and raceway groove curvature radius (RGCR), are varied to evaluate stress intensity factors (SIFs), crack growth rates and crack growth angles. The results provide valuable guidelines for enhanced understanding of RCF in bearings.