2.7米标准球面检验镜支撑优化设计

高婧婧; 焦长君; 黄屾; 张真; 毕勇

doi:10.37188/CO.2019-0225

Volume 13 Issue 4

Aug. 2020

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Chinese Optics > 2020 > 13(4): 805-813.

GAO Jing-jing, JIAO Chang-jun, HUANG Shen, ZHANG Zhen, BI Yong. Optimal design of a 2.7 m standard spherical inspection mirror support[J]. Chinese Optics, 2020, 13(4): 805-813. doi: 10.37188/CO.2019-0225

Citation:

GAO Jing-jing, JIAO Chang-jun, HUANG Shen, ZHANG Zhen, BI Yong. Optimal design of a 2.7 m standard spherical inspection mirror support[J]. Chinese Optics, 2020, 13(4): 805-813. doi: 10.37188/CO.2019-0225

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Optimal design of a 2.7 m standard spherical inspection mirror support

doi: 10.37188/CO.2019-0225

1.
Nanjing Research Centre of Astronomical Instruments, Chinese Academy of Sciences, Nanjing 210042, China
2.
University of Science and Technology of China, Hefei 230026, China
3.
Nanjing Astronomical Instruments Ltd., Chinese Academy of Sciences, Nanjing 210042, China

Funds: Natural Science Foundation of Jiangsu Province (No.BK20181125)

More Information

Corresponding author: 178026064@qq.com
Received Date: 25 Nov 2019
Rev Recd Date: 04 Dec 2019
Publish Date: 01 Aug 2020

Abstract

Abstract

Aiming at the problem that the decrease of inspection accuracy caused by an increase in the diameter of a spherical inspection mirror, the weight support parameters of the 2.7-meter standard spherical mirror are optimized and the structural design of its adjustment frame and support system is implemented. Firstly, the 54-point equal-force support ring is optimized for the mirror body using a finite element and genetic algorithm. In order to increase the rigidity of the mirror body when increasing the nesting hole, the bottom support force and the side support force of each ring are optimized separately and the influence of support radius and support force error on the support deformation is statistically analyzed. Finally, based on the analysis results, a structural frame of the standard inspection mirror and a support system are designed. The analysis results show that after optimization of the 54-point support position of the standard spherical mirror, the bottom support force and the side support force of each ring and under the condition that the spherical mirror support deformation is less than 1/115λ(λ=632.8 nm), the bottom support position is disturbed by ±2 mm, the side support position is disturbed by ±0.6 mm, and the support force disturbance is ±3 N, the support deformation is less than 1/70λ, which shows little deterioration. This meets the requirements of standard spherical mirror support.
- standard spherical mirror,
- heavy hammer support,
- optimized design,
- disturbance analysis

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References(16)

References

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