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Structural design of 3m class ground based telescope elevation ring
Tan, Yufeng1,2,3; Wang, Jihong1,2; Ren, Ge1,2; Xie, Zongliang1,2,3; Zhu, Fuyin1,2,3; Jiang, Chuan1,2,3
Source PublicationProceedings of SPIE: 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Volume9682Pages:96820R
2016
Language英语
ISSN0277-786X
DOI10.1117/12.2243227
Indexed BySCI ; Ei
WOS IDWOS:000387746500026
SubtypeC
AbstractIn order to improve the dynamic stiffness of telescope mount, the accuracy of aiming and stability of optical system, a topology optimization method based on the theory of variable density and taking maximum stiffness as objective function is studied. In the topology optimization analysis of elevation ring, one of the most important members of the telescope mount, two kinds of structural are designed: one is a traditional plate welding structure and the other is a combination of plate welding and truss welding. Furthermore, the stiffness and modal performance of the elevation ring in different performances are analyzed and compared. The results show that in meeting the strength and stiffness of the premise, the mass of elevation ring with plate welding and truss welding is 7.00T and the moment of inertia is 11.94 t•m2. What's more, the total deformation in the horizontal direction and the zenith direction are 6.70μm and 55.86μm, respectively; the stress is within stress range of material's promise; the modal is 105.9Hz.Compared with the traditional structural with plate welding, this new structural design approached to ensure the dynamic stiffness while effectively reducing its own weight with reduction rate 10.7% and moments of inertia with reduction rate 12.3%. This new structural of plate welding and truss welding has obvious advantages in lightweight design. This new design method based on topology optimization will provide efficient help to later components design of the telescope mount. © 2016 SPIE.
KeywordDensity Functional Theory Finite Element Method Manufacture Mirrors Optical Systems Optical Testing Shape Optimization Stiffness Telescopes Topology Trusses Welding
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8539
Collection光电工程总体研究室(一室)
Affiliation1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan
2.610209, China
3. Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu Sichuan
4.610209, China
5. University of Chinese Academy of Sciences, Beijing
6.100039, China
Recommended Citation
GB/T 7714
Tan, Yufeng,Wang, Jihong,Ren, Ge,et al. Structural design of 3m class ground based telescope elevation ring[J]. Proceedings of SPIE: 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes,2016,9682:96820R.
APA Tan, Yufeng,Wang, Jihong,Ren, Ge,Xie, Zongliang,Zhu, Fuyin,&Jiang, Chuan.(2016).Structural design of 3m class ground based telescope elevation ring.Proceedings of SPIE: 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes,9682,96820R.
MLA Tan, Yufeng,et al."Structural design of 3m class ground based telescope elevation ring".Proceedings of SPIE: 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes 9682(2016):96820R.
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