Φ500 mm超轻量化SiC反射镜结构优化设计

赵宇; 苏成志; 赵贵军; 杨光

doi:10.37188/CO.2019-0201

Volume 13 Issue 6

Dec. 2020

Turn off MathJax

Article Contents

Chinese Optics > 2020 > 13(6): 1352-1361.

ZHAO Yu, SU Cheng-zhi, ZHAO Gui-jun, YANG Guang. Structural optimization for the design of an ultra-lightweight SiC mirror with a diameter of 500 mm[J]. Chinese Optics, 2020, 13(6): 1352-1361. doi: 10.37188/CO.2019-0201

Citation:

ZHAO Yu, SU Cheng-zhi, ZHAO Gui-jun, YANG Guang. Structural optimization for the design of an ultra-lightweight SiC mirror with a diameter of 500 mm[J]. Chinese Optics, 2020, 13(6): 1352-1361. doi: 10.37188/CO.2019-0201

Citation:

PDF( 5075 KB)

Structural optimization for the design of an ultra-lightweight SiC mirror with a diameter of 500 mm

doi: 10.37188/CO.2019-0201

1.
College of Mechanical Engineering, Changchun University of Science and Technology, Changchun 130000, China
2.
Changchun Up Optotech Co., Ltd., Changchun 130000, China

Funds: Supported by National Natural Science Foundation of China (No. 11873046)

More Information

Corresponding author: chengzhi_su@126.com
Received Date: 22 Oct 2019
Rev Recd Date: 17 Dec 2019

Available Online: 09 Nov 2020

Publish Date: 01 Dec 2020

Abstract

Abstract

To meet the performance requirements of ultra-lightweight Φ500 mm-reflector optical system in near diffraction limit, the structure of the reflector is studied using advanced CAE simulation and modern high-performance SiC fabrication technology. Firstly, mirror materials were selected by comparing the common materials and manufacturing processes of existing mirrors. Then, with regards to the structural characteristics of circular symmetrical reflectors, the structure of proposed reflector was designed based on integrated optimization of the full stiffness method. Finally, the reflector assembly was designed with a back-support structure. The simulation results show that the mass of proposed primary mirror is less than 5 kg and the surface density is less than 20 kg/m². The surface errors (RMS value) of the three directions of dead weight deformation at 4 ℃ temperature rise are less than λ/50. The first-order resonance frequency of the primary mirror assembly is no less than 120 Hz and the stress at the weakest point as measured by dynamic response analysis is less than 100 MPa. The structural optimization of the mirror meets its design requirements, with a remarkable lightweight effect and a structure that is both stable and reliable.
- ultra-lightweight,
- back support,
- finite element simulation,
- equal stiffness design,
- integrated optimization

FullText(HTML)

References(11)

References

[1]	董斌超, 张舸. 超轻量化SiC反射镜的制备及性能[J]. 光学精密工程,2015,23(8):2185-2191. doi: 10.3788/OPE.20152308.2185 DONG B CH, ZHANG G. Fabrication and properties of ultra-lightweight SiC mirror[J]. Optics and Precision Engineering, 2015, 23(8): 2185-2191. (in Chinese) doi: 10.3788/OPE.20152308.2185
[2]	赵文兴, 张舸, 赵汝成, 等. 轻型碳化硅质反射镜坯体的制造工艺[J]. 光学精密工程,2011,19(11):2609-2617. doi: 10.3788/OPE.20111911.2609 ZHAO W X, ZHANG G, ZHANG R CH, et al. Fabrication of silicon carbide lightweight mirror blank[J]. Optics and Precision Engineering, 2011, 19(11): 2609-2617. (in Chinese) doi: 10.3788/OPE.20111911.2609
[3]	康健, 宣斌, 谢京江. 表面改性碳化硅基底反射镜加工技术现状[J]. 中国光学,2013,6(6):824-833. KANG J, XUAN B, XIE J J. Manufacture technology status of surface modified silicon carbide mirrors[J]. Chinese Optics, 2013, 6(6): 824-833. (in Chinese)
[4]	ROBICHAUD J L, SCHWARTZ J, LANDRY D, et al. Recent advances in reaction bonded silicon carbide optics and optical systems[J]. Proceedings of SPIE, 2005, 5868: 586802. doi: 10.1117/12.617406
[5]	HADAWAY J B, ENG R, STAHL H P, et al. Cryogenic performance of lightweight SiC and C/SiC mirrors[J]. Proceedings of SPIE, 2004, 5487: 1018-1029. doi: 10.1117/12.552409
[6]	张德坷, 曹英斌, 刘荣军, 等. C/SiC复合材料空间光机结构的研究进展与展望[J]. 材料导报,2012,26(13):7-11. doi: 10.3969/j.issn.1005-023X.2012.13.002 ZHANG D K, CAO Y B, LIU R J, et al. Progress and prospect of C/SiC composites used in space opto-mechanical structures[J]. Materials Review, 2012, 26(13): 7-11. (in Chinese) doi: 10.3969/j.issn.1005-023X.2012.13.002
[7]	徐宏, 关英俊. 大口径SiC轻量化反射镜组件的结构设计[J]. 红外与激光工程,2014,43(S1):83-88. XU H, GUAN Y J. Structural design of large aperture SiC mirror subassembly[J]. Infrared and Laser Engineering, 2014, 43(S1): 83-88. (in Chinese)
[8]	陈洪达, 史婷婷, 刘晓华, 等. 空间反射镜的轻量化及支撑设计研究[J]. 红外与激光工程,2014,43(2):535-540. doi: 10.3969/j.issn.1007-2276.2014.02.037 CHEN H D, SHI T T, LIU X H, et al. Lightweight and mounting design for primary mirror in space camera[J]. Infrared and Laser Engineering, 2014, 43(2): 535-540. (in Chinese) doi: 10.3969/j.issn.1007-2276.2014.02.037
[9]	袁健, 任建岳. 碳化硅反射镜轻量化结构的改进与优化[J]. 光子学报,2015,44(8):34-39. YUAN J, REN J Y. Improvement and optimization of lightweight structure for SiC reflective mirror[J]. Acta Photonica Sinica, 2015, 44(8): 34-39. (in Chinese)
[10]	包奇红, 沙巍, 陈长征, 等. 中心支撑Φ610 mm圆形主镜的超轻量化设计[J]. 光子学报,2016,45(9):0912007. doi: 10.3788/gzxb20164509.0912007 BAO Q H, SHA W, CHEN CH ZH, et al. Ultra-lightweight design of Φ610 mm circular primary mirror supported in centre[J]. Acta Photonica Sinica, 2016, 45(9): 0912007. (in Chinese) doi: 10.3788/gzxb20164509.0912007
[11]	袁健, 沙巍, 陈长征, 等. 长条形反射镜的集成优化设计[J]. 光电工程,2015,42(6):85-89, 94. doi: 10.3969/j.issn.1003-501X.2015.06.015 YUAN J, SHA W, CHEN CH ZH, et al. Integrated optimization design of rectangular reflective mirror[J]. Opto-Electronic Engineering, 2015, 42(6): 85-89, 94. (in Chinese) doi: 10.3969/j.issn.1003-501X.2015.06.015