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Proceedings Paper

Topology optimization design of cradle of GSSMP
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Paper Abstract

Tertiary mirror of thirty meter telescope (TMT) has the tracking and pointing capabilities, and its structure is similar to an alt-az telescope. The cradle serves a similar function to the center block of the track frame, its structure directly affects the performance of the system. M3 prototype as an example, in order to improve stiffness to weight ratio of the cradle, the mathematical model of topology optimization design of the cradle was established and the optimization was performed. Then a spliced truss structure for cradle was designed based on the result of the topology optimization. By using finite element method, the static and dynamic analysis of cradle under different conditions was done according to the working characteristics. The results showed that under the conditions of the gravity vertical along the x, y, z, the maximum deformation of cradle was 0.064mm, 0.015mm, 0.025mm respectively, and the first modal frequency is 74.4Hz. Results showed the structure designed meets the requirement.

Paper Details

Date Published: 11 January 2019
PDF: 6 pages
Proc. SPIE 10837, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 108370M (11 January 2019); doi: 10.1117/12.2506583
Show Author Affiliations
Haibo Jiang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Hongchao Zhao, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Fei Yang, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 10837:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Xiaoliang Ma; Bin Fan; Yongjian Wan; Adrian Russell; Xiangang Luo, Editor(s)

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