上海航天2011，Vol.28Issue(4)：51-56,6.
结构系统静强度与疲劳耦合可靠性的当量寿命分析
Equivalent Life Analysis of Structural System Coupled Reliability for Static Strength and Fatigue
摘要
Abstract
Based on the coupled reliability method of structural system for static strength and fatigue, the equivalent life and equivalent damage of elements for static strength failure were put forward in this paper. The probability distribution of equivalent life was discussed when the equivalent damage obeyed normal distribution, lognormal normal distribution, I extreme value distribution and Weibull distribution. The results showed that the equivalent life would obey lognormal normal distribution when the equivalent damage obeyed normal distribution, lognormal normal distribution and I extreme value distribution, and the equivalent life would not obey lognormat normal distribution when the equivalent damage obeyed Weibull distribution, in general. But, the results of example showed that the error of failure probability was accepted if equivalent damage was regarded as lognormal normal distribution. It could avoid the equivalent normal transform and simplify the calculation, and improve the calculation efficiency.关键词
可靠性/静强度/疲劳/当量寿命/概率分布Key words
Reliability/Static strength Fatigue Equivalent life Probability distribution分类
航空航天引用本文复制引用
赵维涛,姚东林..结构系统静强度与疲劳耦合可靠性的当量寿命分析[J].上海航天,2011,28(4):51-56,6.基金项目
辽宁省教育厅项目 （）
航空基金项目 （）
