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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 国际磨粒技术学会（International Committee of Abrasive Technology, ICAT）委员，中国机械工程学会极端制造分会副主任、生产工程分会常务委员、微纳米制造技术分会常务委员，中国机械工程学会生产工程分会磨粒加工技术专业委员会副主任、切削加工专业委员会常委委员、精密工程与微纳技术专业委员会常委委员，中国机械工程学会特种加工分会超声加工技术委员会副主任，中国机械工程学会摩擦学分会微纳制造摩擦学专业委员会常务委员，中国机械工业金属切削刀具协会切削先进制造技术研究会常务理事、对外学术交流工作委员会副主任、切削先进制造技术研究会自动化加工技术与系统委员会副主任。
性别：男
毕业院校：西北工业大学
学位：博士
所在单位：机械工程学院
学科：机械制造及其自动化. 机械电子工程. 航空宇航制造工程
办公地点：机械工程学院7191
电子邮箱：kangrk@dlut.edu.cn
Design Optimization Method for Additive Manufacturing of the Primary Mirror of a Large-Aperture Space Telescope
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论文类型：期刊论文
发表时间：2017-05-01
发表刊物：JOURNAL OF AEROSPACE ENGINEERING
收录刊物：SCIE、EI
卷号：30
期号：3
ISSN号：0893-1321
关键字：Space mirror; Lightweight design; Topology optimization; Additive manufacturing; Closed-back
摘要：The lightweight design of the sandwich mirror, as a commonly used space primary mirror structure, is one of the key topics for the design of space-based optomechanical systems. Owing to the limitation of traditional manufacturing capabilities, the induced holes on the mirror back are usually of the open or half-open form, which compresses the optimization design space. With rapid development of additive manufacturing (AM) technologies, it is possible to fabricate a closed-back sandwich mirror with a complex internal structure to achieve outstanding performance. In this paper, a novel topology optimization model for a closed-back primary mirror of a large-aperture space telescope is proposed. First, extrusion constraints are considered in the optimization model to obtain the layout design of stiffening webs inside the mirror core. Then, a simply connected constraint, as one type of constraint in AM, is considered to avoid enclosed voids in the structures. Through solving the proposed model, a new closed-back sandwich mirror configuration with nonclosed treelike vertical stiffening webs, is achieved. In addition, the thicknesses of the internal stiffening webs are optimized for minimizing the weight with the constraint of the surface shape error of the mirror face. Compared with the classical and existing sandwich mirror configurations, the optimized mirror has significant superiorities on optical performance and the lightweight ratio, which illustrates the effectiveness of the presented method. The method is a prospective study in the design of a space mirror fabricated using AM. (C) 2016 American Society of Civil Engineers.