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Structural Design, Analysis and Simulation of a Deployable Sun Shield

Author: HuLiang
Tutor: GuanFuLing
School: Zhejiang University
Course: Structural Engineering
Keywords: Deployable Structure Space Telescope Sun Shield Symbolic Matrix
CLC: TU399
Type: Master's thesis
Year: 2011
Downloads: 137
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Abstract


Currently more and more important large-scale Deployable Structures, in order to obtain a clearer picture of the reflection signals are stronger and stronger in the need for large aperture space telescope reflecting surface, large-diameter telescope. In this paper, in a large space telescope were necessary hood design, analysis, production and simulation.Firstly, access to a large number of domestic and foreign literature, summed up the hood at home and abroad to expand the application and start the process of research, of which significance and research ideas are described.The deployable structure, usually increases the redundant constraints, in order to improve the stiffness and stability after the commencement. However, too much may cause structural constraints can not be expanded. In the design of this structure, the current through the geometric analysis and general spreadsheet to determine the geometric topology. Determine the structure of this paper can be malleable, and an alternative topology design. In the theory of generalized inverse matrix based on the use of symbolic computation, the structure of which can not be started, without reducing the number of cases, their binding can be directly obtained the appropriate constraints (or component size), so that the initial structure can Expand to the intended form of forms. The biggest advantage of this method is that without human intervention, can achieve its procedures.In the analysis, the paper briefly describes the analysis has important application to start the Moore-Penrose generalized inverse matrix theory, and its solution method. Then it use this theory, and on this basis, joined the vector finite element ideas outside the framework of applied rigid body the computational simulation of cable membrane being achieved good results.In the design and analysis,which is based on the use of aluminum and aluminum hard physical models made of platinum and conduct an experiment. The results show that the model is to start well and have good rigidity and stability.Finally, based on structure theory analysis,it can show the research results, using VC++, MATLAB, VTK programming has developed a deployable structure deployment dynamics simulation software, and the process of developing some of the issues involved, such as three-dimensional visualization and before and after processing, data structures, parallel computing algorithm for some elaboration.

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