东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (5): 716-719+732.DOI: -

• 论著 • 上一篇    下一篇

基于有限元法的非线性转子系统动态特性

李朝峰;孙伟;马辉;闻邦椿;   

  1. 东北大学机械工程与自动化学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-05-15 发布日期:2013-06-22
  • 通讯作者: Li, C.-F.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50535010)

FEM-based study on dynamic behavior of nonlinear rotor system

Li, Chao-Feng (1); Sun, Wei (1); Ma, Hui (1); Wen, Bang-Chun (1)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-05-15 Published:2013-06-22
  • Contact: Li, C.-F.
  • About author:-
  • Supported by:
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摘要： 在分析离散模型的基础上,采用有限元法建立转子轴承系统的有限元模型,考虑了系统轴承的非线性因素,包括转子的剪切效应、惯量分布效应、横向扭转以及系统结构的几何参数等重要影响因素,使模型更为具体化.分别对转子轴承系统离散模型和有限元模型的非线性动力学行为进行比较分析,研究表明由于考虑影响因素的增加,两种模型的动力学特性有一定的差异,有限元模型在参数设计等方面具有优势;采用有限元模型研究得出的结果更为可信,为转子系统的非线性动态设计提供更为准确的验证和参考.

关键词: 转子轴承系统, 复杂非线性, 有限元模型, 分岔, 混沌

Abstract: Based on the analysis of the discrete model, an FEM-based model of rotor-bearing system was developed considering some important influencing factors other than the nonlinear factors of the bearing, such as the inertia distribution, shear, transverse torsion, structural geometric parameters of the system. The dynamic behavior of the system and discrete system was discussed separately and comparatively on the same unbalance conditions, and the results showed that the dynamic behavior as expressed in the two models is different to a certain extent because of the increased influencing factors taken into account. The FEM model regarded as superior in design parameters, and it can provide more convincible data for the nonlinear characteristics of a rotor system, thus giving more accurate reference and verification to the nonlinearly dynamic design of the complex rotor system.

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