航空学报 > 1989, Vol. 10 Issue (2): 76-78

赘余桁架结构可靠性的计算方法

董聪   

  1. 西北工业大学
  • 收稿日期:1987-11-19 修回日期:1900-01-01 出版日期:1989-02-25 发布日期:1989-02-25

A METHOD OF RELIABILITY COMPUTATION FOR REDUNDANT TRUSS STRUCTURES

Dong Cong   

  1. Northwestern Polytechnical University
  • Received:1987-11-19 Revised:1900-01-01 Online:1989-02-25 Published:1989-02-25

摘要:

本文在现有的一些国际流行的有关计算赘余桁架结构可靠性方法的基础上加以改进,提出了计算赘余桁架结构可靠性的强度削减一人造外载法。它将结构的失效看作是一个前后相关的失效过程,而不是象以往的算法那样,将结构的失效看作是一些孤立的状态,因而更真实地反映了赘余结构失效的方式和实质,更准确地计算出了结构真实失效概率的上下界。算例结果表明,本文算法是切实可行的。

关键词: 可靠性, 赘余度, 失效概率

Abstract:

In this paper, a new method of reliability computation for redundant truss structures is presented. The advantage of this method'over the methods lies in its capability of approaching to the exact value at less cost, which is demonstrated by two numerical examples.

Key words: reliability, redundancy, failure probability