The nonlinear energy sink (NES) is usually coupled with a linear oscillator (LO) to rapidly transfer and immediately dissipate a significant portion of the initial shock energy induced into the LO. This passive energy transfer and dissipation are usually achieved through strong resonance captures between the NES and the LO responses. Here, a nontraditional set of nonlinear coupling restoring forces is numerically investigated to introduce enhanced versions of the NESs. In this new set of nonlinear coupling restoring forces, one has a varying nonlinear stiffness that includes both of hardening and softening stiffness components during the oscillation, which appear in closed-loops under the effect of the damping. The obtained results by the numerical simulation have shown that employing this kind of the nonlinear restoring forces for passive targeted energy transfer (TET) is promising for shock mitigation.
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April 2017
Technical Briefs
Nonlinear Energy Sinks With Nontraditional Kinds of Nonlinear Restoring Forces
Mohammad A. AL-Shudeifat
Mohammad A. AL-Shudeifat
Aerospace Engineering,
Khalifa University of Science, Technology and Research,
Abu Dhabi 127788, UAE
e-mail: mohd.shudeifat@kustar.ac.ae
Khalifa University of Science, Technology and Research,
Abu Dhabi 127788, UAE
e-mail: mohd.shudeifat@kustar.ac.ae
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Mohammad A. AL-Shudeifat
Aerospace Engineering,
Khalifa University of Science, Technology and Research,
Abu Dhabi 127788, UAE
e-mail: mohd.shudeifat@kustar.ac.ae
Khalifa University of Science, Technology and Research,
Abu Dhabi 127788, UAE
e-mail: mohd.shudeifat@kustar.ac.ae
Contributed by the Technical Committee on Vibration and Sound of ASME for publication in the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received July 3, 2015; final manuscript received December 2, 2016; published online February 22, 2017. Assoc. Editor: Paul C.-P. Chao.
J. Vib. Acoust. Apr 2017, 139(2): 024503 (5 pages)
Published Online: February 22, 2017
Article history
Received:
July 3, 2015
Revised:
December 2, 2016
Citation
AL-Shudeifat, M. A. (February 22, 2017). "Nonlinear Energy Sinks With Nontraditional Kinds of Nonlinear Restoring Forces." ASME. J. Vib. Acoust. April 2017; 139(2): 024503. https://doi.org/10.1115/1.4035479
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