Optimization and Finite Element Analysis of Large-Aperture SiC Lightweight Primary Mirror

doi:10.3788/AOS202141.1122002

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	Optimization and Finite Element Analysis of Large-Aperture SiC Lightweight Primary Mirror
	C. Wang; D. Wang; X. Huang and J. Wang
刊名	Guangxue Xuebao/Acta Optica Sinica
	2021
卷号	41 期号:11
ISSN号	2532239
DOI	10.3788/AOS202141.1122002
英文摘要	In order to achieve a high degree of light weight, a sector-shaped SiC light-weight primary mirror of a 1000 mm photoelectric theodolite is taken as the research object and optimized design. By optimizing the thickness of the ribs on the back of the main mirror, the thickness of the semi-closed back panel and the total thickness of the main mirror, the volume and quality of the main mirror are reduced. After the three-dimensional model is established, the finite element model is established using the finite element software Abaqus, and the deformation analysis of the primary mirror is performed after the finite element simulation results are obtained. The Zernike polynomial is used to fit the deformation data of the primary mirror, and the root mean square (RMS) value of the surface error of the primary mirror is obtained. The simulation results show that the mass of the optimized main mirror is 62.78 kg, which is 30% lower than the initial mass (89.36 kg), and the diameter-to-thickness ratio of the main mirror is increased from 8.58 to 11.44 when the design requirements of the main mirror surface accuracy are met. When the optical axis is horizontal, a four-dimensional interferometer is used to detect the surface shape of the fan-shaped lightweight main mirror, and the detection result of the RMS value of the main mirror surface error is 18.22 nm. 2021, Chinese Lasers Press. All right reserved.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65500]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	C. Wang,D. Wang,X. Huang and J. Wang. Optimization and Finite Element Analysis of Large-Aperture SiC Lightweight Primary Mirror[J]. Guangxue Xuebao/Acta Optica Sinica,2021,41(11).
APA	C. Wang,D. Wang,&X. Huang and J. Wang.(2021).Optimization and Finite Element Analysis of Large-Aperture SiC Lightweight Primary Mirror.Guangxue Xuebao/Acta Optica Sinica,41(11).
MLA	C. Wang,et al."Optimization and Finite Element Analysis of Large-Aperture SiC Lightweight Primary Mirror".Guangxue Xuebao/Acta Optica Sinica 41.11(2021).