Quasi-periodic response of a linear oscillator attached to nonlinear energy sink with relatively small mass under external sinusoidal forcing in a vicinity of main (1:1) resonance is studied analytically and numerically. It is shown that the quasi-periodic response is exhibited in well-defined amplitude-frequency range of the external force. Two qualitatively different regimes of the quasi-periodic response are revealed. The first appears as a result of linear instability of the steady-state regime of the oscillations. The second one occurs due to interaction of the dynamical flow with invariant manifold of damped-forced nonlinear normal mode of the system, resulting in hysteretic motion of the flow in the vicinity of this mode. Parameters of external forcing giving rise to the quasi-periodic response are predicted by means of simplified analytic model. The model also allows predicting that the stable quasi-periodic regimes appear for certain range of damping coefficient. All findings of the simplified analytic model are verified numerically and considerable agreement is observed.
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e-mail: ovgend@tx.technion.ac.il
e-mail: stryuli@techunix.technion.ac.il
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March 2007
Technical Papers
Quasi-Periodic Response Regimes of Linear Oscillator Coupled to Nonlinear Energy Sink Under Periodic Forcing
O. V. Gendelman,
O. V. Gendelman
Faculty of Mechanical Engineering,
e-mail: ovgend@tx.technion.ac.il
Technion—Israel Institute of Technology
, Haifa 32000, Israel
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Yu. Starosvetsky
Yu. Starosvetsky
Faculty of Mechanical Engineering,
e-mail: stryuli@techunix.technion.ac.il
Technion—Israel Institute of Technology
, Haifa 32000, Israel
Search for other works by this author on:
O. V. Gendelman
Faculty of Mechanical Engineering,
Technion—Israel Institute of Technology
, Haifa 32000, Israele-mail: ovgend@tx.technion.ac.il
Yu. Starosvetsky
Faculty of Mechanical Engineering,
Technion—Israel Institute of Technology
, Haifa 32000, Israele-mail: stryuli@techunix.technion.ac.il
J. Appl. Mech. Mar 2007, 74(2): 325-331 (7 pages)
Published Online: February 9, 2006
Article history
Received:
May 18, 2005
Revised:
February 9, 2006
Citation
Gendelman, O. V., and Starosvetsky, Y. (February 9, 2006). "Quasi-Periodic Response Regimes of Linear Oscillator Coupled to Nonlinear Energy Sink Under Periodic Forcing." ASME. J. Appl. Mech. March 2007; 74(2): 325–331. https://doi.org/10.1115/1.2198546
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