内齿圈作为行星齿轮传动系统的关键部件，对行星传动系统的均载和动载特性具有至关重要的作用。柔性内齿圈行星轮系借助齿圈自身柔性，可显著补偿由于系统部件加工误差和安装误差所导致的各行星轮传递扭矩的不均匀性。本文深入剖析柔性内齿圈结构特性，对比表明柔性内齿圈较传统齿圈结构具备更加优良的柔性，可改善系统均载与动载性能，但同时也存在齿面接触应力偏载、应力分布不均匀、承载传动误差波动幅值增大以及结构应力集中等弊端，相关解析结果可为明确柔性齿圈设计及改良齿圈结构提供理论支持。

As a key component of planetary transmission system, the ring gear plays an important role in load sharing and dynamic load factor of planetary transmission system. With the help of the flexibility of ring gear, the non-uniformity of the transmission torque about each planetary wheel caused by the machining error and installation error of the system components can be significantly compensated. In this paper, the structural characteristics of flexible ring gear are deeply analyzed. The comparison shows that flexible ring gear has better flexibility than the traditional ring gear , which can improve the load sharing and dynamic load factor. But at the same time, there are some disadvantages, such as Unbalanced loading, uneven stress distribution, increasing amplitude of loaded transmission errors and stress concentration of structure. The relevant analysis results can provide theoretical support for the design of flexible ring gear and the improvement of ring gear structure.

国家自然科学青年基金项目(52305045;52005402;52105060); 安徽省高校科研研究项目-重点项目(2023AH051224); 安徽理工大学高层次引进人才科研启动基金项目(2022yjrc19); 国家自然科学基金重点项目(U21A20125).