Reference : Irreversible passive TEF in the damped response of coupled oscillators with nonlinearity
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Mechanical engineering
Physical, chemical, mathematical & earth Sciences : Mathematics
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/18331
Irreversible passive TEF in the damped response of coupled oscillators with nonlinearity
English
Kerschen, Gaëtan mailto [Université de Liège - ULg > 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, > > >]
Sep-2005
ASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, Long Beach, 2005
Yes
International
International Design Engineering Technical Conferences
September 24-28, 2005,
ASME 2005
Long Beach, California
USA
[en] PASSIVE ENERGY TRANSFER ; COUPLED OSCILLATORS ; nonlinear systems ; DAMPED SYSTEM
[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.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/18331

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