Multi-objective optimization design of lens barrel for the carbon dioxide detector

	Multi-objective optimization design of lens barrel for the carbon dioxide detector
	Liang B.; Liu W.; Chen C.
	2012
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	41 期号:7 页码:1858-1866
摘要	To meet lens barrel's requirements for high stiffness, lightweight and good thermal environment adaptability, multi-objective optimization that combines the compliance and first-order natural frequency under multiple load cases was studied. Firstly, based on the SIMP (Solid Isotropic Materials with Penalization) method, weight sum method and target-vector approach were adopted to define objective function of multi-objective topology optimization. Then lens barrel was optimized. The optimization procedure consisted of two main steps of topology optimization and thickness optimization. During topology optimization, with stiffness and maximum first-order natural frequency as the objective function, a creative frame layout was obtained. After approximating the result of topology optimization as a thin-walled structure, a new lens barrel 3-D model was established. The approximated thickness of lens barrel were optimized to minimize its mass. The stiffness and natural frequency obtained by topology optimization were set as design constraints for this thickness optimization. The optimization results show that the mass of final lens barrel decreases to 12.46 kg from 18.63 kg, the maxim deformation subjected to gravity load decrease to 0.0019 mm from 0.013 mm, the maximum deformation caused by thermal load decreases to 0.062 mm from 0.098 mm, and the first-order natural frequency increases to 189.83 Hz from 65.6 Hz. With this optimization method, the design period is effectively shortened, and the performance of lens barrel is enhanced, which shows that optimized lens barrel can meet the system design requirements.
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/34603
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Liang B.,Liu W.,Chen C.. Multi-objective optimization design of lens barrel for the carbon dioxide detector[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2012,41(7):1858-1866.
APA	Liang B.,Liu W.,&Chen C..(2012).Multi-objective optimization design of lens barrel for the carbon dioxide detector.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,41(7),1858-1866.
MLA	Liang B.,et al."Multi-objective optimization design of lens barrel for the carbon dioxide detector".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 41.7(2012):1858-1866.

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