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

    Fingerprint

    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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