[关键词]
[摘要]
电机的模态是分析振动的基础,由固有频率、振型和阻尼比决定。当电机工作时的激振频率与某一阶的固有频率相同或者相近时,会产生共振,导致电机剧烈振动,影响其正常运转。在对应用于航空电反推系统的双通道永磁同步电机PMSM进行三维建模之后,将三维模型送入ANSYS Workbench,在ANSYS工作平台上进行电机模态、响应谱分析与冲击响应的仿真。给出了该电机的前6阶次的固有频率和振型,以及在外加响应谱下的电机等效应力与在瞬态冲击下的电机机械结构上的应力分布。
[Key word]
[Abstract]
The mode of motor is the basis of vibration analysis, which is determined by natural frequency, mode shape and damping ratio. When the excitation frequency of the motor is the same as or similar to the natural frequency of a certain order, resonance will occur, and the motor will vibrate violently, which will affect its normal operation. After the 3D modeling of dualchannel permanent magnet synchronous motor (PMSM) applied in aero electric reverse system, the 3D model is sent to the ANSYS Workbench, and the motor modal analysis, response spectrum analysis and impact response simulation are carried out on the ANSYS platform. The first six order natural frequencies and vibration modes of the motor, the equivalent stress of the motor under the external response spectrum and the stress distribution on the mechanical structure of the motor under the transient impact are given.
[中图分类号]
[基金项目]
陕西省重点研发计划项目(2018GY-185)