SL-COA:Hybrid Efficient and Enhanced Coati Optimization Algorithm for Structural Reliability Analysis  

作　　者：Yunhan Ling Huajun Peng Yiqing Shi Chao Xu Jingzhen Yan Jingjing Wang Hui Ma 

机构地区：[1]China Academy of Machinery,Beijing Research Institute of Mechanical&Electrical Technology Co.,Ltd.,Beijing,100083,China [2]AVICGuizhou Anda Aviation Forging Co.,Ltd.,Anshun,561000,China [3]School ofMechanical and Electrical Engineering,University of Electronic Science and Technology of China,Chengdu,611731,China

出　　处：《Computer Modeling in Engineering & Sciences》2025年第4期767-808,共42页工程与科学中的计算机建模(英文)

基　　金：funded by the National Key Research and Development Program(Grant No.2022YFB3706904).

摘　　要：Thetraditional first-order reliability method(FORM)often encounters challengeswith non-convergence of results or excessive calculation when analyzing complex engineering problems.To improve the global convergence speed of structural reliability analysis,an improved coati optimization algorithm(COA)is proposed in this paper.In this study,the social learning strategy is used to improve the coati optimization algorithm(SL-COA),which improves the convergence speed and robustness of the newheuristic optimization algorithm.Then,the SL-COAis comparedwith the latest heuristic optimization algorithms such as the original COA,whale optimization algorithm(WOA),and osprey optimization algorithm(OOA)in the CEC2005 and CEC2017 test function sets and two engineering optimization design examples.The optimization results show that the proposed SL-COA algorithm has a high competitiveness.Secondly,this study introduces the SL-COA algorithm into the MPP(Most Probable Point)search process based on FORM and constructs a new reliability analysis method.Finally,the proposed reliability analysis method is verified by four mathematical examples and two engineering examples.The results show that the proposed SL-COA-assisted FORM exhibits fast convergence and avoids premature convergence to local optima as demonstrated by its successful application to problems such as composite cylinder design and support bracket analysis.

关 键 词：Hybrid reliability analysis single-loop interactive hybrid analysis most probability point metaheuristic algorithms coati optimization algorithm 

分 类 号：TU311.2[建筑科学—结构工程]