TY - GEN
T1 - Targeted energy transfer phenomena in vibro-impact oscillators
AU - Lee, Young S.
AU - Nucera, Francesco
AU - Vakakis, Alexander F.
AU - McFarland, D. Michael
AU - Bergman, Lawrence A.
PY - 2008
Y1 - 2008
N2 - We study targeted energy transfer (TET) in a coupled oscillator, consisting of a single-degree-of-freedom primary linear oscillator coupled to a vibro-impact nonlinear energy sink (VI NES). For this purpose, we first compute the VI periodic orbits of the underlying hamiltonian VI system, and construct the corresponding frequency-energy plot (FEP). Then, considering inelastic impacts and viscous dissipation, we examine VI damped transitions on the FEP to identify a TET phenomenon by exciting a VI impulsive orbit, which is the most efficient mechanism for TET. Not only can the VI TET involve passive absorption and local dissipation of significant portions of the energy from the primary systems, but it occurs at sufficiently fast time scales. This renders VI NESs suitable for applications, like seismic mitigation, where shock elimination in the early, highly energetic regime of the motion is a critical requirement.
AB - We study targeted energy transfer (TET) in a coupled oscillator, consisting of a single-degree-of-freedom primary linear oscillator coupled to a vibro-impact nonlinear energy sink (VI NES). For this purpose, we first compute the VI periodic orbits of the underlying hamiltonian VI system, and construct the corresponding frequency-energy plot (FEP). Then, considering inelastic impacts and viscous dissipation, we examine VI damped transitions on the FEP to identify a TET phenomenon by exciting a VI impulsive orbit, which is the most efficient mechanism for TET. Not only can the VI TET involve passive absorption and local dissipation of significant portions of the energy from the primary systems, but it occurs at sufficiently fast time scales. This renders VI NESs suitable for applications, like seismic mitigation, where shock elimination in the early, highly energetic regime of the motion is a critical requirement.
KW - Targeted energy transfer (TET)
KW - passive and broadband vibration absorber
KW - vibro-impact nonlinear energy sink (VI NES)
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U2 - 10.1063/1.2963762
DO - 10.1063/1.2963762
M3 - Conference contribution
AN - SCOPUS:84874834162
SN - 9780735405424
T3 - AIP Conference Proceedings
SP - 1390
EP - 1398
BT - 2008 Seismic Engineering Conference Commemorating the 1908 Messina and Reggio Calabria Earthquake
T2 - 2008 Seismic Engineering International Conference Commemorating the 1908 Messina and Reggio Calabria Earthquake, MERCEA 2008
Y2 - 8 July 2008 through 11 July 2008
ER -