2014 Fiscal Year Final Research Report
Instability Mechanism and Non-Contact Suppression of a web-Flutter in an air-floating system
| Project/Area Number |
24560272
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Aoyama Gakuin University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | フラッタ / 制御 |
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| Outline of Final Research Achievements |
This study deals with a flutter analysis of a rectangular flexible sheet subjected to axial fluid flow. The unsteady fluid force acting on the sheet surface is calculated by using Doublet-point method, which is based on the unsteady lifting surface theory. The equation of motion of the sheet coupled with the fluid flow is derived by employing finite element method. Flutter velocity and frequency are measured in experiment. Flutter characteristic is clarified by comparing the analysis with the experimental results. The local work by fluid force on the sheet surface, and instability mechanism are clarified. Moreover, an active feedback control to suppress the sheet flutter is proposed. The sheet flutter is actively controlled and suppressed the movable plates change the fluid flow around the sheet. It is theoretically and experimentally indicated that the flow induced sheet flutter is suppressed by the proposed active control.
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| Free Research Field |
工学
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