Experimental Evidence of Vibrational Resonance in a Mechanical Bistable Twin-Well Oscillator

Abdrouf Abusoua, Mohammed Daqaq

Research output: Contribution to journalArticle

Abstract

Vibrational resonance (VR) is a nonlinear phenomenon which occurs when a bistable system is subjected to a biharmonic excitation consisting of a small-amplitude resonant excitation and a large-amplitude high-frequency excitation. The result is that, under some conditions, the high-frequency excitation amplifies the resonant response associated with the slow dynamics. While VR was studied extensively in the open literature, most of the research studies used optical and electrical systems as platforms for experimental investigation. This paper provides experimental evidence that VR can also occur in a mechanical bistable twin-well oscillator and discusses the conditions under which VR is possible. The paper also demonstrates that the injection of the high frequency excitation can be used to change the effective stiffness of the slow response. This can be used for amplification/deamplification of the output signal which can be useful for sensitivity enhancement and/or vibration mitigation.

Original languageEnglish (US)
Article number061002
JournalJournal of Computational and Nonlinear Dynamics
Volume13
Issue number6
DOIs
StatePublished - Jun 1 2018

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Excitation
Bistable System
Nonlinear Phenomena
Biharmonic
Amplification
Experimental Investigation
Stiffness
Injection
Enhancement
Vibration
Evidence
Output
Demonstrate

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Applied Mathematics

Cite this

Experimental Evidence of Vibrational Resonance in a Mechanical Bistable Twin-Well Oscillator. / Abusoua, Abdrouf; Daqaq, Mohammed.

In: Journal of Computational and Nonlinear Dynamics, Vol. 13, No. 6, 061002, 01.06.2018.

Research output: Contribution to journalArticle

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