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    On the Application of the Multiple Scales Method on Electrostatically Actuated Resonators

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    MTS-Manuscript-Saad.pdf
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    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Ilyas, Saad cc
    Alfosail, Feras cc
    Younis, Mohammad I. cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    10.13039/501100004052
    Date
    2019-02-15
    Permanent link to this record
    http://hdl.handle.net/10754/652984
    
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    Abstract
    We investigate modeling the dynamics of an electrostatically actuated resonator using the perturbation method of multiple time scales (MTS). First, we discuss two approaches to treat the nonlinear parallel-plate electrostatic force in the equation of motion and their impact on the application of MTS: expanding the force in Taylor series and multiplying both sides of the equation with the denominator of the forcing term. Considering a spring-mass-damper system excited electrostatically near primary resonance, it is concluded that, with consistent truncation of higher-order terms, both techniques yield same modulation equations. Then, we consider the problem of an electrostatically actuated resonator under simultaneous superharmonic and primary resonance excitation and derive a comprehensive analytical solution using MTS. The results of the analytical solution are compared against the numerical results obtained by long-time integration of the equation of motion. It is demonstrated that along with the direct excitation components at the excitation frequency and twice of that, higher-order parametric terms should also be included. Finally, the contributions of primary and superharmonic resonance toward the overall response of the resonator are examined.
    Citation
    Ilyas S, Alfosail FK, Younis MI (2019) On the Application of the Multiple Scales Method on Electrostatically Actuated Resonators. Journal of Computational and Nonlinear Dynamics 14: 041006. Available: http://dx.doi.org/10.1115/1.4042694.
    Sponsors
    King Abdullah University of Science and Technology (Funder ID: 10.13039/501100004052).
    Publisher
    ASME International
    Journal
    Journal of Computational and Nonlinear Dynamics
    DOI
    10.1115/1.4042694
    Additional Links
    http://computationalnonlinear.asmedigitalcollection.asme.org/article.aspx?articleid=2724090
    ae974a485f413a2113503eed53cd6c53
    10.1115/1.4042694
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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