2011 Fiscal Year Final Research Report
Numerical Analysis and Dynamics of Large Deployable Membrane Structures
| Project/Area Number |
21560826
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
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| Research Institution | Japan Aerospace Exploration Agency |
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Principal Investigator |
OKUIZUMI Nobukatsu 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (10321564)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 膜面構造物 / ダイナミクス / 数値シミュレーション / 遠心力展開 / 真空槽実験 / 振動モード |
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| Research Abstract |
In order to develop large membrane deployable structures, a multiple particle system model which is suited for efficient numerical analysis of membrane dynamics was developed and centrifugal deployment behaviors and vibration characteristics of membranes are studied. By inventing a model for crease stiffness and contact and adjusting the models for buckling and damping, it was confirmed that the numerical method could properly simulate small-scale centrifugal deployment experiments in vacuum. Vibration modes of a rotating circular membrane are also measured by creating an equipment which can rotate and shake a membrane simultaneously. The experimental results were compared with vibration mode analysis.
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