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Lightweight Design of Multi-Objective Topology for a Large-Aperture Space Mirror
Qu, Yanjun1,2; Jiang, Yanru1,2; Feng, Liangjie1; Li, Xupeng1,2; Liu, Bei1,2; Wang, Wei1,2
作者部门空间光学应用研究室
2018-11
发表期刊APPLIED SCIENCES-BASEL
ISSN2076-3417
卷号8期号:11
产权排序1
摘要

For a large-aperture space telescope, one of the key techniques is the method for designing the lightweight primary mirror assembly (PMA). In order to minimize the mirror surface error under axial gravity, lateral gravity, and polishing pressure at the same time, a method for topology optimization with multi-objective function combined with parametric optimization is introduced in this paper. The weighted compliance minimum is selected as the objective function to maximum the mirror structural stiffness. Then sensitivity analysis method and size optimization are used to determine the mirror structure parameters. Compared with two types of commonly used lightweight configurations, the new configuration design shows obvious superiority. In addition, the surface figure root mean square (RMS) of the mirror mounted by given bipod flexure (BF) under 1 g lateral gravity is minimized only with a value of 3.58 nm, which proves the effectiveness of the design method proposed in this paper.

关键词Multi-objective Topology Optimization Sensitivity Analysis Space Mirror Lightweight Structure
DOI10.3390/app8112259
收录类别SCI
语种英语
WOS记录号WOS:000451302800249
出版者MDPI
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/30872
专题空间光学应用研究室
通讯作者Wang, Wei
作者单位1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Qu, Yanjun,Jiang, Yanru,Feng, Liangjie,et al. Lightweight Design of Multi-Objective Topology for a Large-Aperture Space Mirror[J]. APPLIED SCIENCES-BASEL,2018,8(11).
APA Qu, Yanjun,Jiang, Yanru,Feng, Liangjie,Li, Xupeng,Liu, Bei,&Wang, Wei.(2018).Lightweight Design of Multi-Objective Topology for a Large-Aperture Space Mirror.APPLIED SCIENCES-BASEL,8(11).
MLA Qu, Yanjun,et al."Lightweight Design of Multi-Objective Topology for a Large-Aperture Space Mirror".APPLIED SCIENCES-BASEL 8.11(2018).
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