光谱定标转动件是星载环境监测仪的关键部件,卫星发射过程中的随机振动是导致其结构失效的重要因素。为有效预示环境监测仪中该转动件在力学环境条件下的响应,采用有限元分析软件ANSYS Workbench对其固有模态和随机振动响应特性进行分析,获得了1σ位移、加速度和等效应力的响应统计值与随机响应谱。分析结果表明,转动件结构在随机振动环境的刚度和强度满足安全性要求,为结构设计和进一步优化提供了参考依据。 Spectral calibration rotator is a key component of spaceborne environmental monitor. Random vibration during satellite launch is an important factor leading to structural failure. In order to effectively predict the response of this rotating element under the environment of mechanical environment, finite element analysis software ANSYS Workbench was used to analyze its natural modes and random vibration responses, and the responses of 1σ displacement, acceleration and equivalent stress were obtained Statistics and Random Response Spectrum. The analysis results show that the rigidity and strength of the rotor structure in random vibration environment meet the safety requirements, which provides a reference for structural design and further optimization.