Topology optimization design of large aperture mirror for the VT system of SVOM

Feng Lin; Wei Wang; Jian Zhang; Xuewu Fan; Wenjing Xu

doi:10.1117/12.2580256

5 November 2020 Topology optimization design of large aperture mirror for the VT system of SVOM

Feng Lin, Wei Wang, Jian Zhang, Xuewu Fan, Wenjing Xu

Proceedings Volume 11570, AOPC 2020: Telescopes, Space Optics, and Instrumentation; 115700T (2020) https://doi.org/10.1117/12.2580256
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

This article, which is based on the topology optimization theory, considered the lightweight design of large aperture reflectors. Firstly, the material selection is based on the low temperature environment and the low temperature infrared optical mechanical structure design principles. Then, by using the minimum deformation of the mirror surface as the objective function, mirror volume and rigid body displacement as design restraints, and imposing manufacturing constraints, a conceptual design of the mirror back with manufacturability was accomplished. Finally, by using the finite element analysis method to compare the performance of the topologically optimized mirror and the primal mirror, it shows that the topologically optimized mirror met the design requirements in terms of lightening effect and structural rigidity, and the surface figure met the requirements under the influence of gravity, which emphasizes the feasibility and practicality of topology optimization in the large aperture mirror’ design.

Citation Download Citation

Feng Lin, Wei Wang, Jian Zhang, Xuewu Fan, and Wenjing Xu "Topology optimization design of large aperture mirror for the VT system of SVOM", Proc. SPIE 11570, AOPC 2020: Telescopes, Space Optics, and Instrumentation, 115700T (5 November 2020); https://doi.org/10.1117/12.2580256

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