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): 724-727.DOI: -

• 论著 • 上一篇    下一篇

基于随机有限元法的轴承可靠性虚拟试验分析

李昌;孙志礼;韩兴;   

  1. 东北大学机械工程与自动化学院;辽宁科技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.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2006AA04Z408);;

Virtual experiment/analysis based on stochastic FEM on bearing reliability

Li, Chang (1); Sun, Zhi-Li (1); Han, Xing (2)   

  1. (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China; (2) School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan 114051, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-05-15 Published:2013-06-22
  • Contact: Li, C.
  • About author:-
  • Supported by:
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摘要： 首先建立三维参数化轴承有限元模型,利用ANSYS软件对其进行数字仿真,得到轴承内部接触应力、应变的变化规律.在此基础上,运用Neumann展开Monte-Carlo随机有限元法(NSFEM),综合考虑轴承原始制造误差以及转速、载荷等不同工况对轴承动态性能的影响,对轴承进行多次随机虚拟试验,得出轴承可靠度,并以定量的概率给出轴承对各参数变量的可靠性灵敏度,为轴承疲劳强度计算和动态优化设计提供可靠的理论依据.

关键词: 随机有限元法, 非线性接触, 轴承, NSFEM, 可靠性灵敏度

Abstract: The inner contact stress and strain of a bearing change was found via developing a 3-D parameterized FEM model of bearings and a numerical simulation of the model with the software ANSYS. Then, the stochastic finite element method extended by Neumann (NSFEM) with Monte-Carlo method is introduced to consider comprehensively the effects of the original errors arising from manufacture and different working conditions including rotating speed and loads on the dynamic capability of bearing. With a stochastic virtual experiment done several times, the sensibilities to the reliabilities of all variable parameters of a bearing were given in form of probability, thus providing theoretically a reference for the fatigue strength calculation and optimum dynamic design of a bearing.

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