Nov. 2016

Article Contents

Chinese Optics> 2016> 9(6): 704-712.

LI Meng-qing, ZHANG Lei, XING Li-na, LI Zong-xuan. Optimization design of athermal adhesive for rectangular space mirror[J]. Chinese Optics, 2016, 9(6): 704-712. doi: 10.3788/CO.20160906.0704

Citation:

LI Meng-qing, ZHANG Lei, XING Li-na, LI Zong-xuan. Optimization design of athermal adhesive for rectangular space mirror[J].Chinese Optics, 2016, 9(6): 704-712.doi:10.3788/CO.20160906.0704

LI Meng-qing, ZHANG Lei, XING Li-na, LI Zong-xuan. Optimization design of athermal adhesive for rectangular space mirror[J]. Chinese Optics, 2016, 9(6): 704-712. doi: 10.3788/CO.20160906.0704

Citation:

LI Meng-qing, ZHANG Lei, XING Li-na, LI Zong-xuan. Optimization design of athermal adhesive for rectangular space mirror[J].Chinese Optics, 2016, 9(6): 704-712.doi:10.3788/CO.20160906.0704

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Optimization design of athermal adhesive for rectangular space mirror

doi:10.3788/CO.20160906.0704

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

Supported by National High-tech R&D Program of ChinaNo.2012AA121502

More Information

Corresponding author:E-mail:18686344285@163.com
Received Date:08 Jun 2016
Rev Recd Date:12 Aug 2016
Publish Date:01 Dec 2016

Abstract

Abstract

In order to realize the athermal assembling of rectangular special mirror with large dimension of 1 200 mm×485 mm, and reduce the effect of hot stress on primary mirror's surface figure precision, the effect of epoxy thickness on the surface figure accuracy of the mirror and the stress of epoxy under static and dynamic conditions are researched. First of all, several already existing athermal adhesive thickness equations obtained based on Hooke's law are introduced. The athermal adhesive thickness equations of the primary mirror which has blind holes with taper in the back is developed, and the curve of athermal adhesive thickness is obtained. Then six modes of mirror with different adhesive thickness are made. The result of analysis shows that the mirror's RMS are 0.0178 λ(optical value) and 0.0173 λ(gravity in detecting's directions) under 5℃ uniform temperature rise when the epoxy thickness is 0.07 mm. Finally, vibration tests of mirror components and drawing test of epoxy are conducted. Analysis and experiment results indicate that its first order frequency is 216.4 Hz and the error between them is 1.71%. The maximum stress of epoxy under dynamic conditions is smaller than the shear strength which is 30.2 MPa, obtained through drawing test of Epoxy, and the safety margin is 2.46. All indicators meet the design requirements.
- space mirror,
- epoxy adhesive,
- athermalization,
- finite element analysis,
- static and dynamic analysis

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References (17)

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