Reference : Stability and LCO Amplitude Prediction for Aeroelastic Systems with Aerodynamic and S...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/24638
Stability and LCO Amplitude Prediction for Aeroelastic Systems with Aerodynamic and Structural Nonlinearities Using Numerical Continuation
English
Vio, Gareth Arthur [University of Manchester > School of Engineering > > >]
Dimitriadis, Grigorios mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale >]
Cooper, Jonathan Edward [University of Manchester > School of Engineering > > >]
Apr-2005
RTO-MP-AVT-123 AC/323(AVT-123)TP/92
RTO-MP-AVT-123 Flow-Induced Unsteady Loads and the Impact on Military Applications
[en] Charges instables induites par écoulement et impact sur les applications militaires
NATO Research and Technology Organisation
27-1 - 27-14, Paper 27
No
No
International
Neuilly-sur-Seine
France
AVT-123 RTO Applied Vehicle Technology Panel (AVT) Symposium
du 25 avril au 28 avril 2005
NATO Research and Technology Organisation
Budapest
Hungary
[en] Nonlinear Aeroelastic Systems ; Limit Cycle Oscillations ; Numerical Continuation
[en] This paper deals with the prediction of stability boundaries and Limit Cycle Oscillation amplitudes for
aeroelastic systems with nonlinear unsteady aerodynamic loads and/or nonlinearity in the structure. The
Numerical Continuation method is used to accurately predict bifurcation conditions and LCO amplitudes
for aeroelastic systems with various types of nonlinearity without the need for extensive CFD calculations.
It is shown that it is possible to completely characterise the stability of systems undergoing subcritical and
supercritical bifurcations. The method is applied to a pitch-plunge airfoil subjected to transonic
aerodynamics and freeplay structural nonlinearity. The results from this analysis are compared to those
obtained from full numerical simulation to ensure their accuracy.
Researchers ; Professionals
http://hdl.handle.net/2268/24638
http://www.rta.nato.int/Pubs/RDP.asp?RDP=RTO-MP-AVT-123

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