Abstract Rolling contact experiments with slip were performed on artificial asperities and indents with pile-up. Micro-pits arose at the leading edge of the asperities and classic rolling contact fatigue (RCF) cracks initiated behind the trailing edge of the indents. The elastic-plastic run-in process and the thermal elastohydrodynamic lubrication (TEHL) load cycles were studied numerically. The run-in process caused high tensile residual stresses at the leading edge of the asperities while the TEHL load cycle caused high tensile stresses at the trailing edge of both the asperities and the indents. The conclusion was thus drawn that the classic RCF cracks behind the indents were caused by the TEHL load cycle while the micro-pits at these artificial asperities were caused by the tensile residual stresses from plastic deformation.

中文翻译：

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与滚动接触疲劳相关的凹凸不平和凹痕的实验和数值研究

摘要 对具有堆积的人造粗糙和凹痕进行了带滑移的滚动接触试验。微凹坑出现在凹凸不平的前缘，而经典的滚动接触疲劳 (RCF) 裂纹则出现在压痕的后缘后面。对弹塑性磨合过程和热弹流体动力润滑（TEHL）载荷循环进行了数值研究。磨合过程在凹凸不平的前缘产生高拉伸残余应力，而 TEHL 负载循环在凹凸不平和压痕的后缘产生高拉伸应力。因此得出的结论是，压痕后面的经典 RCF 裂纹是由 TEHL 负载循环引起的，而这些人造粗糙处的微凹坑是由塑性变形产生的拉伸残余应力引起的。