J4 ›› 2013, Vol. 40 ›› Issue (5): 141-147.doi: 10.3969/j.issn.1001-2400.2013.05.023

• 研究论文 • 上一篇    下一篇



  1. (西安电子科技大学 电子装备结构设计教育部重点实验室,陕西 西安  710071)
  • 收稿日期:2012-05-24 出版日期:2013-10-20 发布日期:2013-11-27
  • 通讯作者: 赵宽
  • 作者简介:赵宽(1984-),男,西安电子科技大学博士研究生,E-mail:xinkuan123@126.com.
  • 基金资助:


Motion function reliability analysis of a rotating flexible beam  with random parameters

ZHAO Kuan;CHEN Jianjun;CAO Hongjun;YUN Yonghu   

  1. (Ministry of Education Key Lab. of Electronic Equipment Structure, Xidian Univ., Xi'an  710071, China)
  • Received:2012-05-24 Online:2013-10-20 Published:2013-11-27
  • Contact: ZHAO Kuan



关键词: 旋转柔性梁, 拉格朗日方程, 假设模态法, 随机响应面法, 可靠性分析


The assumed mode method and stochastic response surface method are combined to analyze the motion function reliability of a rotating flexible beam with random parameters. Firstly, based on Lagrange's equations and the assumed mode method, the rigid-flexible coupling dynamic model which takes the coupling term of the deformation in the expression of longitudinal deformation is studied. Then considering the physical and geometrical parameters under randomness, the probability analysis is made by the stochastic response surface method. The rationality and efficiency of the modeling and the method presented are verified by an example. The results demonstrate that the third order stochastic response surface method leads to good precision with acceptable time consumption compared with the Monte Carlo (MC) method, and that the randomness of density has a greater effect on the reliability of the system.

Key words: rotating flexible beam, Lagrange's equations, assumed mode method, stochastic response surface method, reliability analysis


  • O313.7