Reference : SUPPRESSION OF AEROELASTIC INSTABILITIES BY BROADBAND PASSIVE TARGETED ENERGY TRANSFERS
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Mechanical engineering
Physical, chemical, mathematical & earth Sciences : Mathematics
http://hdl.handle.net/2268/18257
SUPPRESSION OF AEROELASTIC INSTABILITIES BY BROADBAND PASSIVE TARGETED ENERGY TRANSFERS
English
Lee, Young S. mailto [University of Illinois at Urbana-Champaign > Department of Aerospace Engineering > > >]
McFarland, D. Michael mailto [University of Illinois at Urbana-Champaign > Department of Aerospace Engineering > > >]
Vakakis, Alexander F. mailto [National Technical University of Athens > Department of Mechanical and Industrial Engineering > > >]
Bergman, Lawrence A. mailto [University of Illinois at Urbana-Champaign > Department of Aerospace Engineering > > >]
Kerschen, Gaëtan mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
Jul-2008
Sixth EUROMECH Nonlinear Dynamics Conference, Saint Petersbourg, 2008
Yes
International
Sixth EUROMECH Nonlinear Dynamics Conference
1-4 July 2008
Saint-Petersburg
Russia
[en] Targeted energy transfer ; aeroelastic instability suppression
[en] We study passive and nonlinear targeted energy transfers induced by transient resonant interactions between an essentially nonlinear attachment and an in-flow rigid wing model. We show that it is feasible to partially or even completely suppress aeroelastic instabilities in the wing (limit cycle oscillations-LCOs) by passively transferring broadband vibration energy from the wing to the attachment in a one-way irreversible fashion. We study the nonlinear dynamical mechanisms that govern TET and show that they are series of transient or sustained resonance captures in different resonance manifolds of the dynamics. Aeroelastic instability suppression
is performed by partially or completely eliminating the triggering mechanism for aeroelastic instability. Through numerical parametric studies we identify three main mechanisms for suppressing aeroelastic instability, and investigate them in detail, both numerically by Empirical Mode decomposition (EMD), and analytically by slow/fast partitions of the transient dynamics.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/18257

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