Topology and parametric optimization based lightweight design of a space reflective mirror
文献类型：期刊论文
| 作者 | Liu, G. ; Guo, L.; Wang, X. T.; Wu, Q. W.
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| 刊名 | Optical Engineering
 |
| 出版日期 | 2018 |
| 卷号 | 57期号:7页码:12 |
| 关键词 | lightweight mirrors optomechanics space optics optimization design telescope Optics |
| ISSN号 | 0091-3286 |
| DOI | 10.1117/1.Oe.57.7.075101 |
| 英文摘要 | For large space telescopes, the design of lightweight primary mirrors with an acceptable level of optical performance is a challenge. A parametric optimization method based on topology optimization of the basic configuration of the mirror is proposed. A finite-element model of the mirror is generated with linear shell elements, and the optimal distribution of the material is obtained using the continuum topology optimization technique. The lightweight ribs are grouped according to the results of topology optimization results. The design of experiment method is used to pick out the key factors for parametric optimization. The RMS value of the surface shape error of the mirror and the total mass of the mirror are treated as the objective merit functions, and the first-order natural frequency of the mirror is taken as a constraint for parametric optimization. Results show that the local stiffness of the mirror is significantly affected by the thicknesses of the ribs at the corresponding positions. The optimum mirror design obtained using our optimization method is compared with the initial design, and the comparison shows superior optical performance for the optimized mirror. (C)2018 society of Photo-Optical Instrumentation Engineers (SPIE). |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/61193]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, G.,Guo, L.,Wang, X. T.,et al. Topology and parametric optimization based lightweight design of a space reflective mirror[J]. Optical Engineering,2018,57(7):12. |
| APA | Liu, G.,Guo, L.,Wang, X. T.,&Wu, Q. W..(2018).Topology and parametric optimization based lightweight design of a space reflective mirror.Optical Engineering,57(7),12. |
| MLA | Liu, G.,et al."Topology and parametric optimization based lightweight design of a space reflective mirror".Optical Engineering 57.7(2018):12. |
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