Reliability-Based Topology Optimization of Fail-Safe Structures Using Moving Morphable Bars

被引:13
作者
Wang, Xuan [1 ,2 ]
Shi, Yuankun [2 ]
Hoang, Van-Nam [3 ]
Meng, Zeng [2 ]
Long, Kai [4 ]
Wang, Yuesheng [1 ]
机构
[1] Tianjin Univ, Sch Mech Engn, Tianjin 300072, Peoples R China
[2] Hefei Univ Technol, Dept Engn Mech, Hefei 230009, Peoples R China
[3] Vietnam Maritime Univ, Mech Engn Inst, Hai Phong City 180000, Vietnam
[4] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewable, Beijing 102206, Peoples R China
来源
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES | 2023年 / 136卷 / 03期
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Topology optimization; fail-safe design; uncertainty; reliability -based topology optimization; moving morphable; bars; CONTINUUM STRUCTURES; DESIGN;
D O I
10.32604/cmes.2023.025501
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper proposes an effective reliability design optimization method for fail-safe topology optimization (FSTO) considering uncertainty based on the moving morphable bars method to establish the ideal balance between cost and robustness, reliability and structural safety. To this end, a performance measure approach (PMA)-based double -loop optimization algorithm is developed to minimize the relative volume percentage while achieving the reliability criterion. To ensure the compliance value of the worst failure case can better approximate the quantified design requirement, a p-norm constraint approach with correction parameter is introduced. Finally, the significance of accounting for uncertainty in the fail-safe design is illustrated by contrasting the findings of the proposed reliability -based topology optimization (RBTO) method with those of the deterministic design method in three typical examples. Monte Carlo simulation shows that the relative error of the reliability index of the optimized structure does not exceed 3%.
引用
收藏
页码:3173 / 3195
页数:23
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