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    An Analytical Method for Vibration Modelling of a Piezoelectric Bimorph Beam for Power Harvesting

    Access Status
    Fulltext not available
    Authors
    Lumentut, Mikail
    Howard, Ian
    Date
    2009
    Type
    Conference Paper
    
    Metadata
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    Citation
    Lumentut, Mikail F. and Howard, Ian M. 2009. An Analytical Method for Vibration Modelling of a Piezoelectric Bimorph Beam for Power Harvesting, ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems (SMASIS2009), pp. 601-611, Sep 21 2009. Oxnard, USA: American Society of Mechanical Engineers (ASME).
    Source Title
    Proceedings of the ASME 2009 conference on Smart Materials,Adaptive Structures and Intelligent Systems ( SMASIS2009)
    Source Conference
    ASME 2009 conference on Smart Materials,Adaptive Structures and Intelligent Systems ( SMASIS2009)
    DOI
    10.1115/SMASIS2009-1398
    ISBN
    978-0-7918-3857-0
    School
    Department of Mechanical Engineering
    Remarks

    The American Society of Mechanical Engineers (ASME) digital library can be located at http://asmedl.org/

    URI
    http://hdl.handle.net/20.500.11937/11631
    Collection
    • Curtin Research Publications
    Abstract

    This paper presents the development of a mathematical method for modelling a piezoelectric bimorph beam under two input base-transversal and longitudinal excitations. The piezoelectric bimorph beam model was based on the Euler-Bernoulli beam coupled with polarity-electric field for low power harvesting. The piezoelectric bimorph beam with brass centre shim was also coupled to a simple electrical circuit of resistor component. The existence of input base-longitudinal motion can affect the overall strain, polarity and electric field of the cantilevered piezoelectric bimorph, identified to have predominant bending due to input transverse-base motion. The characteristic physical behaviour of the bimorph model for parallel connection can create mode vector configurations of X-poling due to longitudinal extension form and Y-poling due transverse bending form. Conversely, the effect of series connection of the physical bimorph model can create X-poling due to transverse bending and Y-poling due to longitudinal extension forms. A new method of solving the piezoelectric bimorph under two input base-motions using coupling superposition of the elastic-polarity field has been introduced. The governing dynamics equations can be derived analytically using the weak form of Hamiltonian theorem to obtain the constitutive equations. DuBois-Reymond lemma can be used to separate three constitutive dynamic equations based on independent coefficients of the virtual displacement vectors. Furthermore, the solution forms for the three governing dynamics equations were assumed using the three independent normal modes of displacement functions based on the normal modes in the transversal, longitudinal and electric potential mode forms. To this end, the dynamic equations for frequency response, dynamic displacements, accelerations and electric voltage can be further computed analytically according to the suggested formulations.

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      This research investigates vibration energy harvesting by modelling several piezoelectric-based structures. The usage of piezoelectric transduction under input vibration environments can be profitable for obtaining ...
    • The Analysis of a Piezoelectric Bimorph Beam with Two Input Base Motions for Power Harvesting
      Lumentut, Mikail; Howard, Ian (2010)
      The exploitation of usable power from vibration environments shows potential benefit for recharging batteries and powering wireless transmission. In this paper, we present a novel technique for simulating the electromechanical ...
    • Analytical and Experimental Comparisons of Electromechanical Vibration Response of a Piezoelectric Bimorph Beam for Power Harvesting
      Lumentut, Mikail; Howard, Ian (2013)
      Power harvesters that extract energy from vibrating systems via piezoelectric transduction show strong potential for powering smart wireless sensor devices in applications of health condition monitoring of rotating machinery ...
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