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Suppression of limit cycle oscillations with a nonlinear energy sink: experimental results
Hill, W. Joel; Strganac, Thomas W.; Lee, Young S. et al.
2006In 47th AIAA Structural Dynamics and Materials Conference, Newport, 2006
 

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Keywords :
limit cycle oscillations; aircraft; Future air vehicle; nonlinear energy sink; freedom aeroelastic system
Abstract :
[en] The presence of limit cycle oscillations within the flight envelopes of existing aircraft is well documented. Future air vehicle designs are also likely to encounter limit cycle oscillations under certain loading conditions. These steady-state constant amplitude oscillations are detrimental to mission effectiveness and lead to increased fatigue of aircraft structures. Previous efforts to suppress limit cycle oscillations have focused primarily on active control methods. These efforts have been effective but require significant measurement and control resources. In this study the investigators test a passive method for suppressing limit cycle behavior. A nonlinear energy sink, based on the principle of nonlinear energy pumping, is shown to be effective for increasing the stability threshold of a nonlinear two degree of freedom aeroelastic system.
Disciplines :
Mechanical engineering
Aerospace & aeronautics engineering
Author, co-author :
Hill, W. Joel;  Texas A&M University, College Station, Texas, 77843 > Department of Aerospace Engineering
Strganac, Thomas W.;  Texas A&M University, College Station, Texas, 77843 > Department of Aerospace Engineering
Lee, Young S.;  University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801 > Department of Aerospace Engineering,
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Vakakis, Alexander F.;  National Technical University of Athens, Greece > Department of Mechanical & Industrial Engineering and Department of Aerospace Engineering
Bergman, Lawrence A.;  University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801 > Department of Aerospace Engineering
Language :
English
Title :
Suppression of limit cycle oscillations with a nonlinear energy sink: experimental results
Publication date :
2006
Event name :
47th AIAA Structural Dynamics and Materials Conference
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
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since 17 September 2009

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