Response-surface-based structural reliability analysis with random and interval mixed uncertainties

作     者：HAN Xu JIANG Chao LIU LiXin LIU Jie LONG XiangYun 

作者机构：State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2014年第57卷第7期

页      面：1322-1334页

核心收录：

学科分类：0810[工学-信息与通信工程] 07[理学] 070104[理学-应用数学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0701[理学-数学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Science Foundation for Excellent Young Scholars(Grant No.51222502) the Key Project of Chinese National Programs for Fundamental Research and Development(Grant No.2010CB832700) the National Natural Science Foundation of China(Grant No.11172096) the Key Program of the National Natural Science Foundation of China(Grant No.11232004) 

主　　题：structural reliability response surface mixed uncertainty model probability interval uncertain structure 

摘      要：Traditional reliability analysis requires probability distributions of all the uncertain ***,in many practical applications,the variation bounds can be only determined for the parameters with limited information.A complex hybrid reliability problem then will be caused when the random and interval variables coexist in a same *** this paper,by introducing the response surface technique,we develop a new hybrid reliability method to efficiently compute the interval of the failure probability of the structure due to the probability-interval hybrid *** present method consists of a sequence of *** each step,a response surface model is constructed for the limit-state function by using a quadratic polynomial and a modified axial experimental design *** approximate hybrid reliability problem is created based on the response surface model,which is subsequently solved by an efficient decoupling *** updating strategy is suggested to improve the quality of the response surface and whereby ensure the reliability analysis precision.A computational procedure is then summarized for the whole *** numerical examples and also a practical application are provided to demonstrate the effectiveness of the present method.