结构系统失效概率的近似分析

1. 哈尔滨船舶工程学院航天工程系 哈尔滨 160001
• 收稿日期:1991-03-07 修回日期:1991-08-05 出版日期:1992-03-25 发布日期:1992-03-25

APPROXIMATE ANALYSIS FOR FAILURE PROBABILITY OF STRUCTURAL SYSTEMS

Cai Yin-lin, Zhou Jian-sheng

1. Department of Aerospace Engineering, Harbin Shipbuilding EngineeringInstitute, Harbin, 150001
• Received:1991-03-07 Revised:1991-08-05 Online:1992-03-25 Published:1992-03-25

Abstract:

An approximate formula using the lower and upper bound of the first simple bounds for estimate of the failure probability of structural systems is presented in the paper. In the approximate formula, the correlation between each of the two failure modes of the structural systems is considered but only the first failure probability of the failure modes is contained. Numerical examples are provided to demonstrate that the error is quitesmall. Usually the maximum error is within five per cent. The approximate formula possesses quite high accuracy and the computation is simple and convenient.