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    Parametric Design-Based Modal Damped Vibrational Piezoelectric Energy Harvesters with Arbitrary Proof Mass Offset: Numerical and Analytical Validations

    10640.pdf (2.633Mb)
    Access Status
    Open access
    Authors
    Lumentut, Mikail
    Howard, Ian
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Lumentut, M. and Howard, I. 2016. Parametric Design-Based Modal Damped Vibrational Piezoelectric Energy Harvesters with Arbitrary Proof Mass Offset: Numerical and Analytical Validations. Mechanical Systems and Signal Processing. 68-69: pp. 562-586.
    Source Title
    Mechanical Systems and Signal Processing
    DOI
    10.1016/j.ymssp.2015.05.017
    ISSN
    0888-3270
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/10660
    Collection
    • Curtin Research Publications
    Abstract

    This paper focuses on the primary development of novel numerical and analytical techniques of the modal damped vibration energy harvesters with arbitrary proof mass offset. The key equations of electromechanical finite element discretisation using the extended Lagrangian principle are revealed and simplified to give matrix and scalar forms of the coupled system equations, indicating the most relevant numerical technique for the power harvester research. To evaluate the performance of the numerical study, the analytical closed-form boundary value equations have been developed using the extended Hamiltonian principle. The results from the electromechanical frequency response functions (EFRFs) derived from two theoretical studies show excellent agreement with experimental studies. The benefit of the numerical technique is in providing effective and quick predictions for analysing parametric designs and physical properties of piezoelectric materials. Although analytical technique provides a challenging process for analysing the complex smart structure, it shows complementary study for validating the numerical technique.

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