基于ANSYS的磁轴承飞轮转子的模态分析  

Modal Analysis of Magnetic bearing Flywheel Rotor Based on ANSYS

作　　者：汤双清 黄鹏[1,2] 柯友文 宋文虎[1] 李庆东 

机构地区：[1]三峡大学机械与动力学院,湖北宜昌443002 [2]三峡大学新能源微电网湖北省协同创新中心,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2017年第6期85-89,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金项目(51175297)

摘　　要：探讨磁轴承飞轮转子的动力学特性.在ANSYS9.0中建立了磁轴承飞轮转子的三维实体有限元模型,利用Block Lanczos法提取了前20阶振型、位移和固有频率.在一种在无外力,轴承约束下,分析转子的振型、位移和固有频率;在无轴承约束下转子的振型、位移和固有频率,进而讨论两种方式下产生转子的振型、位移、固有频率的差异.研究结果表明,在不同的约束下这些特征参数和形态发生着显著的变化,对轴系一体化设计以及轴系振动控制有一定的指导意义.The dynamic characteristics of the magnetic bearing flywheel rotor are discussed. In the ANSYS 9.0 a 3D entity finite element model of magnetic bearing flywheel rotor is established;and then using the Block Lanczos method the first 20th order displacement, mode shapes and natural frequencies are extracted. Under the condition of no external force and bearing constraints, the rotor vibration mode and natural frequency of displacement are analyzed. And without the bearing constraints, we do another analysis of displacement, mode shapes and natural frequencies; then we have found the difference between the two experiments. The re- search results show that the characteristic parameters and the forms under different constraints change great- ly. The results have certain guiding significance for integrated design of bearing and bearing vibration control.

关 键 词：磁悬浮轴承 飞轮电池 转子动力学 模态分析 有限元法 

分 类 号：TH133.3[机械工程—机械制造及自动化]