| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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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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