计算力学学报2021，Vol.38Issue(4)：462-470,9.DOI:10.7511/jslx20210513407
一种基于区间过程模型的时变可靠性分析方法
A time-variant reliability analysis method based on interval process model
摘要
Abstract
In this paper,a time-variant reliability analysis method based on the interval process model is proposed to deal with problems involving interval variables and interval processes.A reliability index based on the extreme response is first defined to measure the reliability of a structure under uncertainties modeled by interval variables and interval processes.Then a double-loop optimization is developed to calculate the reliability index.In the inner loop,the extreme response with respect to time is calculated using the efficient global optimization method.In the outer loop,an optimization with respect to all input interval variables,including the original ones and those obtained after the series expansion of the input interval processes,is performed to search for the upper and lower bounds of the extreme response.Two examples are used to demonstrate the effectiveness of the proposed method.关键词
时变可靠性分析/区间过程模型/区间K-L展开/极值响应Key words
time-variant reliability analysis/interval process model/interval K-L expansion/extreme response分类
数理科学引用本文复制引用
李金武,李金洋,姜潮,倪冰雨,杨刚..一种基于区间过程模型的时变可靠性分析方法[J].计算力学学报,2021,38(4):462-470,9.基金项目
国防科工局国防基础科研项目(JCKY2020110C105) （JCKY2020110C105）
核科学挑战计划基金(TZ2018007) （TZ2018007）
国家自然科学基金创新研究群体(51621004)资助项目.Project supported by National Defense Fundamental Research Foundation of China (JCKY2020110C105) （51621004）
Science Challenge Project (TZ2018007) （TZ2018007）
Foundation for Innovative Research Groups of the National Natural Science Foundation of China(51621004). （51621004）
