Reference : Internal Resonance and Stall-Flutter in a Pitch-Flap Wing in the Wind-Tunnel
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/173641
Internal Resonance and Stall-Flutter in a Pitch-Flap Wing in the Wind-Tunnel
English
Verstraelen, Edouard mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
Kerschen, Gaëtan mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
Dimitriadis, Grigorios mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Feb-2015
Proceedings of the SEM IMAC XXXII
No
International
SEM IMAC XXXIII A Conference and Exposition on Structural Dynamics
February 3 - 6 2015
Society for Experimental Mechanics
Orlando
FL
[en] Nonlinear Aeroelasticity ; Wind-Tunnel testing ; Stall-Flutter ; Internal Resonance
[en] Nonlinear aeroelastic phenomena such as store-induced LCOs, transonic buzz and stall flutter are the burden or modern aircraft: they reduce the performance and can even limit the flight envelope in both civil and military cases. Several nonlinear setups were studied experimentally in the last decades by the scientific community but most of them have pitch and plunge degrees of freedom and feature a rigid wing. In this paper, we study a new nonlinear aeroelastic apparatus that features nonlinear pitch and flap degrees of freedom, coupled with a flexible wing. The model is tested experimentally in the wind tunnel to determine its dynamic behaviour. Preliminary observations demonstrate that the system undergoes a supercritical Hopf bifurcation due to the hardening nonlinearity followed by an amplitude jump that is the consequence of either dynamic stall (i.e. stall flutter) or internal resonance (i.e. interaction between the hardening nonlinearity and higher modes).
European Union (ERC Starting Grant NoVib 307265)
The Nonlinear Tuned Vibration Absorber (NoVib)
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/173641
10.1007/978-3-319-15221-9_45

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