• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2001, Vol. 37 ›› Issue (8): 88-90.

• 论文 • 上一篇    下一篇

基于结构体动态问题的概率有限元法研究

宁方立;吴立言   

  1. 西北工业大学机械系
  • 发布日期:2001-08-15

RESEARCH OF STOCHASTIC FINITE ELEMENT METHOD BASED ON STRUCTURE DYNAMICAL PROBLEM

Ning Fangli;Wu Liyan   

  1. Northwestern Polytechnical University
  • Published:2001-08-15

摘要： 将求解结构动态特性问题的有限元法与可靠性分析的三参数法相结合，建立了一套求解结构体动态特征值的概率参数及分布的三参数概率有限元法。该方法的建立既解决了关于复杂结构动态问题的可靠性分析问题，同时又使可靠性问题的分析精度有一定的提高。最后，在算例中验证了三参数概率有限元法的可行性、有效性。

关键词: 动力学, 概率, 可靠性, 有限元法, 变刚度, 关节驱动器, 机器人, 柔性齿条

Abstract: One new three-parameter stochastic finite element method (TPSFEM) to analysis probability parametars and distribution of structure dynamical eigenvalue is proposed. TPSFEM combines finite element method to structure dynamical eigenvalue with three - parameter method to reliability analysis. TPSFEM not only solves how to process reliability analysis in structure problem, but also improves the analysis precision in reliability. Several examples are given, and the results ascertain that TPSFEM is feasible and effective.

Key words: Dynamics, Finite element method, Reliability, Stochastic, Flexible rack, Joint actuator, Robot, Variable stiffness

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