Topological optimization design for SM system of large aperture telescope

doi:10.3788/IRLA201847.0818008

CIOMP OpenIR

	Topological optimization design for SM system of large aperture telescope
	Zhang, Limin; Han, Xida; Lv, Tianyu; Zhao, Hongchao
	2018
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	47 期号:8
摘要	Aiming at the precision requirement of machining and assembling for the SM system of the large-aperture grounded telescope, a design method for the structure of SM system based on topology optimization was presented. Based on the variable density idea of topology optimization, the ground structure was restricted to be the Spider and Serrurie trusses, the target was that the deformation along the expected direction was minimized, and the last appearance and dimension were described by whether the material was deleted from the ground structure or not. Firstly, the relative density was taken as design variable, and then by using 1st modal and deformation in gravity direction for the Spider and deformation along the X and Y axis for the truss as a design restraint, a topology optimization model was established. Secondly, on the basis of concept structure obtained by topology optimization, it was iterated and optimized by using Workbench. Finally, the optimized parameter was set, and the static and dynamic stiffness was analyzed and optimized using the finite element method. It shows that the 1st modal in the 4 m telescope SM system is 22.7 Hz, and the deviation in the direction of the gravity is -0.173 mm and -0.195 mm when the optical axis is parallel and vertical to the gravity direction, and the lightweight ratio exceeds 30% for the Spider and Serrurier truss, respectively. The results demonstrate the validity of the proposed approach properly. 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
关键词	Topology Deformation Finite element method Shape optimization Structural design Telescopes Trusses
DOI	10.3788/IRLA201847.0818008
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60842
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	Zhang, Limin,Han, Xida,Lv, Tianyu,et al. Topological optimization design for SM system of large aperture telescope[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2018,47(8).
APA	Zhang, Limin,Han, Xida,Lv, Tianyu,&Zhao, Hongchao.(2018).Topological optimization design for SM system of large aperture telescope.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,47(8).
MLA	Zhang, Limin,et al."Topological optimization design for SM system of large aperture telescope".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 47.8(2018).

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