Abstract Contact fatigue issues are becoming more prominent in current gear anti-fatigue designs. Surface wear may result in unavoidable occurrence competition among contact fatigue failure modes such as micropitting and pitting. This work proposed a model incorporating the interface characteristics, mechanical properties and residual stress gradients to explore this competition mechanism during wear process of a wind turbine gear pair. Results reveal that the critical damage position moves deeper from near-surface to subsurface during the wear process, indicating that the most likely failure mode changes gradually from surface initiated contact failure to subsurface initiated contact failure. This illustrates that one-sided gear anti-fatigue designs may not satisfy the complex contact conditions because the dominant failure mode may change during operation.

中文翻译：

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考虑轮齿磨损演化的齿轮接触疲劳失效竞争机制研究

摘要 当前齿轮抗疲劳设计中接触疲劳问题越来越突出。表面磨损可能导致微点蚀和点蚀等接触疲劳失效模式之间不可避免的发生竞争。这项工作提出了一个结合界面特征、机械性能和残余应力梯度的模型，以探索风力涡轮机齿轮副磨损过程中的这种竞争机制。结果表明，在磨损过程中，临界损伤位置从近表面到次表面更深，表明最可能的失效模式从表面引发的接触失效逐渐转变为次表面引发的接触失效。