1.2 m主镜支撑系统的设计与优化

International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) Pub Date : 2021-12-13 DOI:10.1117/12.2604579

Kewei Chen, Dan Jia, Zhongliang Ying, Zhige Zhang, Nian Pan, Jinlong Huang, Kunpeng Wang, L. Xue

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引用次数: 1

摘要

1.2 m主镜支撑系统由whiffletree结构的轴向支撑系统和6条切线的横向支撑系统组成。通过有限元模拟，确定了轴向支承的18个点的位置，并对主镜底腔结构进行了改进。为了减小反射镜表面变形，通过优化侧支撑结构来减小主反射镜上的装配应力。分析结果表明，当主镜垂直指向时，表面变形的均方根(RMS)为10.9nm。主镜水平指向时，表面变形的均方根值为10.3nm。

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Design and optimization of 1.2-m primary mirror supporting systems

The 1.2-m primary mirror supporting systems are composed of axial support system with whiffletree structure and lateral support system with 6 tangent links. With the simulation based on the finite element analysis (FEA), the 18 points positions of the axial support are determined and the bottom chamber structure of the primary mirror is improved. In order to reduce the mirror surface deformation, the assembly stress on the primary mirror is reduced by optimizing the lateral support structure. The analysis results demonstrated that the root-mean-square (RMS) of the surface deformation is 10.9nm when the primary mirror points vertically. Meanwhile the RMS of the surface deformation is 10.3nm when the primary mirror points horizontally.

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International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT)

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