Level set topology optimization design of large-aperture mirror

doi:10.3788/IRLA201847.0918001

CIOMP OpenIR

	Level set topology optimization design of large-aperture mirror
	Li, Chengliang; Ding, Yalin; Liu, Lei
	2018
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	47 期号:9
摘要	In order to design large-aperture mirror with light weight, high rigidity, high accuracy characteristics for the space telescope, a mirror topology optimization method based on the level set method was promoted. Firstly, a finite element model based on the 1-meter aperture mirror body initial structural model was constructed. The surface shape aberration RMS of the mirror was used as the objective function, which was constructed by the DRESP2 technique in Optistruct based on SIGFIT. With the weight constraint, the topology methods based on SIMP and level set method were used to optimize the structure separately during the design process. The separation threshold of the design result was studied based on the OSSmooth function. By analyzing the separation threshold of optimized model, the optimized exported structural model could be achieved. The number of elements with the middle density using the level set topology optimization design method is much smaller than level set method, and the connectivity of the structure is much better. The surface shape RMS value of the optimized model is smaller than /50(=632.8 nm), which satisfies the technique specification. 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
关键词	Structural design Computer aided engineering Drop breakup Level measurement Mirrors Numerical methods Optical engineering Shape optimization Topology
DOI	10.3788/IRLA201847.0918001
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/181722/60715
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	Li, Chengliang,Ding, Yalin,Liu, Lei. Level set topology optimization design of large-aperture mirror[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2018,47(9).
APA	Li, Chengliang,Ding, Yalin,&Liu, Lei.(2018).Level set topology optimization design of large-aperture mirror.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,47(9).
MLA	Li, Chengliang,et al."Level set topology optimization design of large-aperture mirror".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 47.9(2018).

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