Robust topology optimization for multi-material structures considering material uncertainties

doi:10.1016/j.tws.2024.111990

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Robust topology optimization for multi-material structures considering material uncertainties
	Zheng, Yongfeng 2; Chen, Zihao 2; Liu, Baoshou 1; Li, Ping 2; Huang, Jiale 2; Chen, Zhipeng 2; Xiang, Jianhua 2
刊名	THIN-WALLED STRUCTURES
	2024-08-15
卷号	201 页码:16
关键词	Multi -material structures Material uncertainties Lightweight design Topology optimization
ISSN号	0263-8231
DOI	10.1016/j.tws.2024.111990
通讯作者	Xiang, Jianhua(xiangjh@gzhu.edu.cn)
英文摘要	Multi-material structures have attracted more and more attention from scholars and engineers, because they usually have good composite performance. Uncertainty factors are ubiquitous in practice, especially for material uncertainties. Multi-material structures contain many materials with different properties, material uncertainties will affect the allocation of material usage, thereby affecting structural performance. Therefore, it is crucial to consider material uncertainties in the design of multi-material structures. This paper detailedly explores the impacts of elastic modulus uncertainty and Poisson's ratio uncertainty on the design of multi-material structures. The topology optimization is to minimize the compliance subjected to a mass constraint, where multiple materials can be freely allocated during the optimization. Floating projection topology optimization is adopted to search for the structural topologies, and robust sensitivity information is derived. For the quantification of material uncertainties, this paper introduces a non-intrusive polynomial chaos expansion (PCE) method to implicitly quantify them, the computational efficiency and accuracy in PCE is compared with the classical Monte Carlo method. Finally, topology optimization examples are provided to demonstrate the effects of elastic modulus uncertainty, Poisson's ratio uncertainty and hybrid uncertainty on the design of multi-material structures.
资助项目	National Natural Science Founda- tion of China[52205265] ; National Natural Science Founda- tion of China[52375418] ; Guangdong Basic and Applied Basic Research Foundation[2022A1515010309] ; Foundation of State Key Laboratory of Digital Manufacturing Equipment and Technology[DMETKF2022013]
WOS关键词	CONTINUUM STRUCTURES ; LOADING UNCERTAINTY ; DESIGN ; ALGORITHM ; STIFFNESS ; SHAPE ; CODE
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:001243106100001
资助机构	National Natural Science Founda- tion of China ; Guangdong Basic and Applied Basic Research Foundation ; Foundation of State Key Laboratory of Digital Manufacturing Equipment and Technology
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/95687]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Xiang, Jianhua
作者单位	1.Chinese Acad Sci, LNM, Inst Mech, Beijing 100190, Peoples R China 2.Guangzhou Univ, Higher Educ Mega Ctr, Sch Mech & Elect Engn, 230 West Waihuan Rd, Guangzhou 510006, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Yongfeng,Chen, Zihao,Liu, Baoshou,et al. Robust topology optimization for multi-material structures considering material uncertainties[J]. THIN-WALLED STRUCTURES,2024,201:16.
APA	Zheng, Yongfeng.,Chen, Zihao.,Liu, Baoshou.,Li, Ping.,Huang, Jiale.,...&Xiang, Jianhua.(2024).Robust topology optimization for multi-material structures considering material uncertainties.THIN-WALLED STRUCTURES,201,16.
MLA	Zheng, Yongfeng,et al."Robust topology optimization for multi-material structures considering material uncertainties".THIN-WALLED STRUCTURES 201(2024):16.