Structure and static analysis of a new umbrella-shaped keel concentrator

doi:10.1117/12.921997

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Structure and static analysis of a new umbrella-shaped keel concentrator
	Yao, Xiao-Ju 1; Fu, Bi 1; Dai, Jian-Feng 2; Lu, Rui-E 2; Zhao, Pei 3; He, Cheng-Dan 4
	2012
会议日期	December 5, 2011 - December 8, 2011
会议地点	Shenzhen, China
关键词	Aberrations Concentration (process) Intelligent materials Nanotechnology Solar heating Solar wind Static analysis Tensile strength Deployable structure Low concentrations Solar parabolic concentrators Solar thermal propulsion Solar thermal thrusters Spot sizes Structure stability Umbrella-shaped keel
卷号	8409
DOI	10.1117/12.921997
英文摘要	In order to improve the concentration efficiency and eliminate the optical aberration, the umbrella-shaped keel structure has been introduced into the deployable structure concentrator, which can overcome the shortcomings such as the low concentration ratio and ineliminable superimposed folds. A deployable solar parabolic concentrator, possessing the collapsible umbrella-shaped keel and aperture radius of 4.9m has been designed. Its finite element model has been established, the ANSYS software has been adopted to perform the structure and static analysis. Under the influence of solar wind and films surface tension, the maximum deformation of the umbrella fabric is only 0.941mm, the radius of spot size is 6.37cm, geometry concentrator ratio could achieve 5908, only 1.3% reduced than the standard parabolic. The maximum stress is 1.6 MPa, which are much smaller than the tensile strength of Kevlar material. Power density of the concentrator is 8149227.24W/m2, the weight of the system is 0.38Kg per kW. The results indicated that the influence of films tension and solar wind on the working shape of concentrator bas been offset to a large extent by the umbrella-shaped keel. The new umbrella-shaped keel concentrator has available for the solar thermal thruster (STP) system, which has the advantage of high geometry concentrator ratio, structure stability, small envelope volume, light weight and deployable perfectly, as well as the selected structure and materials are appropriate. © 2012 SPIE.
会议录	Proceedings of SPIE - The International Society for Optical Engineering
会议录出版者	SPIE
语种	英语
ISSN号	0277786X
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116558]
专题	省部共建有色金属先进加工与再利用国家重点实验室理学院
作者单位	1.Lanzhou University of Technology, Lanzhou 730050, China; 2.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 3.Northwestern Polytechnical University, Xi an 710072, China; 4.Lanzhou Institute of Physics, China Academy of Space Technology, Lanzhou 730000, China
推荐引用方式 GB/T 7714	Yao, Xiao-Ju,Fu, Bi,Dai, Jian-Feng,et al. Structure and static analysis of a new umbrella-shaped keel concentrator[C]. 见:. Shenzhen, China. December 5, 2011 - December 8, 2011.