Abstract Gear wear is a typical and common early failure, which could lead to geometric deviation of tooth surface, further affecting vibration signal and transmission error. This paper is devoted to analyzing fault mechanism and dynamic characteristics of gear wear, which provides the basis for vibration-based fault diagnosis and monitoring of gear wear. For this purpose, a purely torsional dynamic model of planetary gear with gear wear is proposed where gear wear is evaluated by Archard's equation and it is incorporated into the dynamic model through time-varying mesh stiffness, unloaded static transmission error and gear backlash. Inspired by the work of Chen et al., gear wear is viewed as a kind of tooth deviation and the influence of gear wear on planetary gear dynamic parameters can be analyzed. Finally, the vibration responses of planetary gear under the effect of gear wear are analyzed.

中文翻译：

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带齿轮磨损的行星齿轮故障机理及动力学建模

摘要 齿轮磨损是一种典型且常见的早期故障，会导致齿面几何偏差，进而影响振动信号和传动误差。本文致力于分析齿轮磨损的故障机理和动态特性，为基于振动的齿轮磨损故障诊断和监测提供依据。为此，提出了带有齿轮磨损的行星齿轮的纯扭转动力学模型，其中齿轮磨损通过 Archard 方程进行评估，并通过时变啮合刚度、空载静态传动误差和齿轮齿隙将其纳入动力学模型。受 Chen 等人工作的启发，齿轮磨损被视为一种齿偏差，可以分析齿轮磨损对行星齿轮动态参数的影响。最后，