基于ANSYS的磁悬浮转子的模态分析*

作者：李克雷，谢振宇 日期：2008-02-25/span> 浏览：4039 查看PDF文档

基于ANSYS的磁悬浮转子的模态分析*

李克雷，谢振宇
(南京航空航天大学 机电学院，江苏 南京 210016)

摘要：以磁悬浮轴承转子系统的组成及工作原理为基础，在ANSYS9.0中建立了磁悬浮转子的三维有限元模型。采用Subspace法计算了前4阶固有频率和振型，并与试验模态分析结果进行了对比。结果显示，基于有限元法得到的数据与试验模态分析基本一致，所建立的有限元模型为柔性转子系统设计提供了一定的理论依据。
关键词：磁悬浮轴承；试验模态分析；有限元法；临界转速
中图分类号：TH133文献标识码：A文章编号：1001-4551(2008)01-0001-03

Model analysis of the magnetic suspension rotor based on ANSYS
LI Kelei, XIE Zhenyu
(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
Abstract: Based on the principle of active magnetic bearing system, a 3Dfinite element model of the rotor was established by ANSYS9.0. Initial four order natural frequencies and vibration model shapes were calculated by method of Subspace, and compared with the results of experimental modal analysis. Analysis shows that the results obtained by experimental model analysis(FEA) are basically consistent with that by finite element method(EMA). It provides realiable theoretical basis for flexible rotor system design.
Key words: magnetic bearing (MB); experimental model analysis (EMA); finite element method (FEA); critical speeds

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