防爆电机

高速电机转子部件在复杂工况下的机械应力问题，是影响电机可靠性的关键因素。现针对此问题，结合弹性力学理论、有限元方法、解析模型与仿真分析，深入探究转子在静态、常温运行和热态运行三种状态下的应力响应机制。着重剖析过盈量、离心力及温度场对应力分布的影响，提出护套材料选型安全准则，即米泽斯应力低于材料屈服强度80%。本研究为高速电机转子结构设计及优化提供理论支撑与仿真参考，有助力合理选材与参数设定，提升电机运行的可靠性。

The mechanical stress issues of the rotor components of high-speed motor under complex working condition are the key factors of affecting the reliability of the motors. In response to this problem, this paper combines with the elasticity mechanic theory, finite-element method, analytical model and simulation analysis to deeply research the stress response mechanisms of the rotor in three states of static operation, normal-temperature operation and hot-state operation. It particularly analyzes the influences of the interference magnitude, centrifugal force and temperature field on the stress distribution, and proposes a safety criterion for the selection of the protection sleeve material, i.e. the Mises stress is lower than 80% yield strength of the material. This research provides a theoretical support and simulation references for the structural design and optimization of the high-speed motor rotor, which helps to reasonably select materials and properly set parameters and then improve operational reliability of the motor.