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Irreversible passive TEF in the damped response of coupled oscillators with nonlinearity
Kerschen, Gaëtan; Lee, Young S.; Vakakis, Alexander F. et al.
2005In ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Long Beach, 2005
Peer reviewed
 

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Keywords :
PASSIVE ENERGY TRANSFER; COUPLED OSCILLATORS; nonlinear systems; DAMPED SYSTEM
Abstract :
[en] We study, numerically and analytically the dynamics of passive energy transfer from a damped linear oscillator to an essentially nonlinear end attachment. This transfer is caused either by fundamental or subharmonic resonance capture, and in some cases is initiated by nonlinear beat phenomena. It is shown that, due to the essential nonlinearity, the end attachment is capable of passively absorbing broadband energy both at high and low frequencies, acting, in essence, as a passive broadband boundary controller. Complicated transitions in the damped dynamics can be interpreted based on the topological structure and bifurcations of the periodic solutions of the underlying undamped system. Moreover, complex resonance capture cascades are numerically encountered when we increase the number of degrees of freedom of the system. The grounded, essentially nonlinear end attachment discussed in this work can find application in numerous practical settings, including vibration and shock isolation of structures, seismic isolation, flutter suppression and packaging.
Disciplines :
Mechanical engineering
Physics
Mathematics
Author, co-author :
Kerschen, Gaëtan  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Lee, Young S.;  University of Illinois at Urbana-Champaign > Department of Aerospace Engineering
Vakakis, Alexander F.;  National Technical University of Athens > Division of Mechanics
MacFarland, D. Michael;  University of Illinois at Urbana-Champaign > Department of Aerospace Engineering
Bergman, Lawrence A.;  University of Illinois at Urbana-Champaign > Department of Aerospace Engineering,
Language :
English
Title :
Irreversible passive TEF in the damped response of coupled oscillators with nonlinearity
Publication date :
September 2005
Event name :
International Design Engineering Technical Conferences
Event organizer :
ASME 2005
Event place :
Long Beach, California, United States
Event date :
September 24-28, 2005,
Audience :
International
Main work title :
ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Long Beach, 2005
Peer reviewed :
Peer reviewed
Available on ORBi :
since 10 August 2009

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