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| Reference : Wind tunnel investigation of the stall flutter oscillations of a bridge deck |
| Scientific congresses and symposiums : Paper published in a book | |||
| Engineering, computing & technology : Aerospace & aeronautics engineering | |||
| http://hdl.handle.net/2268/24452 | |||
| Wind tunnel investigation of the stall flutter oscillations of a bridge deck | |
| English | |
Andrianne, Thomas  [Université de Liège - ULg > Département d'aérospatiale et mécanique > Département d'aérospatiale et mécanique >] | |
| Dimitriadis, Grigorios [Université de Liège - ULg > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >] | |
| May-2009 | |
| Proceedings of the 8th National Congress on Theoretical and Applied Mechanics | |
| 90-97 | |
| No | |
| National | |
| 8th National Congress on Theoretical and Applied Mechanics | |
| du 28 mai au 29 mai 2009 | |
| National Committee for Theoretical and Applied Mechanics | |
| Brussels | |
| Belgium | |
| [en] Nonlinear Aeroelasticty ; Stall flutter ; Bridge | |
| [en] Torsional Stall Flutter (TSF) is a one degree of
freedom, self-excited phenomenon induced by the periodic separation/re-attachment of the flow around a body. The present paper proposes an experimental investigation of TSF on a bridge deck. A section model free to oscillate in torsion is tested in a low-speed wind tunnel. Static and dynamic tests are performed to enable a complete interpretation of the phenomena involved. For low airspeeds, the Karman vortex shedding excites the structure, resulting in small oscillations at the vortex shedding frequency. For high airspeeds, the deck undergoes Limit Cycle Oscillations (LCO) due to the TSF phenomenon. Nevertheless the Karman vortex shedding excitation is still present and appears in the measured forces signals. Peaks and troughs in the lift coefficient are detected for each pitching period. They are interpreted as the separation/re-attachment of the flow around the deck. The large amplitudes motion of the deck undergoing TSF reduces the amplitude of the aerodynamic lift coefficient. | |
| Researchers ; Professionals | |
| http://hdl.handle.net/2268/24452 | |
| http://www.nctam.org/ |
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