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Suppression of limit cycle oscillations with a nonlineart energy sink: theoretical basis
Lee, Young S.; Vakakis, Alexander F.; McFarland, D. Michael et al.
2006In 47th AIAA Structural Dynamics and Materials Conference, Newport, 2006
 

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Keywords :
Limit cycle oscillations; high- performance aircraft; structural damage
Abstract :
[en] Limit cycle oscillations (LCOs) commonly require restrictions on the operation of high- performance aircraft and have the potential to cause structural damage or failure. This paper summarizes recent theoretical findings on the application of passive and targeted nonlinear energy transfer (\nonlinear energy pumping") for the reduction or elimination of LCOs in self-excited systems. This NES has been used successfully to suppress LCOs of an elastically mounted, rigid airfoil in flow. The theoretical results are in agreement with experimental studies of a practical airfoil with an attached NES. These experimental results, presented in full in a separate paper, verify the capacity of the NES to reduce or even eliminate these undesired oscillations and to extend the operating speed range of the wing.
Disciplines :
Mechanical engineering
Aerospace & aeronautics engineering
Author, co-author :
Lee, Young S.;  Department of Mechanical and Aerospace Engineering PO Box 30001 / MSC 3450 New Mexico State University Las Cruces, NM 88003-8001
Vakakis, Alexander F.;  University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801
McFarland, D. Michael;  University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801
Bergman, Lawrence A.;  University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Suppression of limit cycle oscillations with a nonlineart energy sink: theoretical basis
Publication date :
May 2006
Event name :
47th AIAA Structural Dynamics and Materials Conference
Event organizer :
AIAA-2006-1849
Event place :
Newport, Rhode Island, United States
Event date :
1 - 4 May 2006
Audience :
International
Main work title :
47th AIAA Structural Dynamics and Materials Conference, Newport, 2006
Publisher :
American Institute of Aeronautics and Astronautics, Reston, United States - Virginia
Available on ORBi :
since 10 August 2009

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