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    A modified first-order plate theory of laminated piezoelectric plate actuators

    Access Status
    Fulltext not available
    Authors
    Lian, M.M.
    Fan, C.Y.
    Qin, G.S.
    Lu, Chunsheng
    Wang, B.B.
    Zhao, M.H.
    Date
    2024
    Type
    Journal Article
    
    Metadata
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    Citation
    Lian, M.M. and Fan, C.Y. and Qin, G.S. and Lu, C. and Wang, B.B. and Zhao, M.H. 2024. A modified first-order plate theory of laminated piezoelectric plate actuators. European Journal of Mechanics, A/Solids. 104: 105209.
    Source Title
    European Journal of Mechanics, A/Solids
    DOI
    10.1016/j.euromechsol.2023.105209
    ISSN
    0997-7538
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/94643
    Collection
    • Curtin Research Publications
    Abstract

    Piezoelectric actuators with large output and high reliability are widely applied in electron device. In this paper, a modified first-order plate theory of laminated piezoelectric plates with upper and lower electrodes is presented. Then, based on the Mindlin first-order shear deformation theory, a quadratic function of electric potential across the thickness is used to describe the inverse piezoelectric effect. The laminated plate governing equations are derived in terms of the resultant force, moment and electric displacement. Further, supplementary equations are introduced through the continuity of electrical potential and the normal electric displacement across interface of each lamina, which are applied to solve the unknown electric functions in each lamina. The numerical results of displacement, deflection and electric potential are consistent with those obtained by the three-dimensional finite element method. Finally, with such a modified plate theory, regulation mechanisms of polarization direction and layer numbers are investigated on actuation properties of laminated piezoelectric actuators. It is shown that the polarization direction can change the driving displacement by an order of magnitude. It is expected that the modified theory can provide a more efficient and accurate approach for analysis of multilayer piezoelectric composite actuators.

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