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Enhanced passive targeted energy transfer in strongly nonlinear mechanical oscillators |
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| Authors: | OV Gendelman T Sapsis LA Bergman |
| Institution: | a Faculty of Mechanical Engineering, Technion, Israel b Massachusetts Institute of Technology, USA c Department of Mechanical Science and Engineering, University of Illinois at Urbana - Champaign, USA d Department of Aerospace Engineering, University of Illinois at Urbana - Champaign, USA |
| Abstract: | Single-degree-of-freedom (SDOF) nonlinear energy sinks (NESs) can efficiently mitigate broadband disturbances applied to primary linear systems by means of passive targeted energy transfer (TET), but for a rather limited range of energies. We demonstrate that the TET can be significantly enhanced for broad range of energies by introducing additional internal degrees of freedom to the NES in a highly asymmetric fashion. Numerical simulations demonstrate that the enhanced performance is due to a positive synergistic effect of the internal degrees of freedom of the proposed NES with highly asymmetric stiffnesses. |
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