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CLC number: O343.8; TB39

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Received: 2005-01-17

Revision Accepted: 2005-05-10

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.9 P.962-966


A variational energy approach for electromechanical analysis of thick piezoelectric beam

Author(s):  LAU C.W.H., LIM C.W., LEUNG A.Y.T.

Affiliation(s):  Department of Building and Construction, City University of Hong Kong, Hong Kong, China; more

Corresponding email(s):   bccwlim@cityu.edu.hk

Key Words:  Energy, Electromechanical, Linear piezoelectricity, Ritz method, Thick beam

LAU C.W.H., LIM C.W., LEUNG A.Y.T.. A variational energy approach for electromechanical analysis of thick piezoelectric beam[J]. Journal of Zhejiang University Science A, 2005, 6(9): 962-966.

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author="LAU C.W.H., LIM C.W., LEUNG A.Y.T.",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

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%DOI 10.1631/jzus.2005.A0962

T1 - A variational energy approach for electromechanical analysis of thick piezoelectric beam
A1 - LAU C.W.H.
A1 - LIM C.W.
J0 - Journal of Zhejiang University Science A
VL - 6
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SP - 962
EP - 966
%@ 1673-565X
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.A0962

A new two dimensional coupled electromechanical model for a thick, laminated beam with piezoelectric and isotropic lamina subjected to static external electric loading is developed. The model combined the first order shear deformation theory for the relatively thick elastic core and linear piezoelectric theory for the piezoelectric lamina. The actuation response is induced through the application of external electric voltage. Rayleigh-ritz method is adopted to model the displacement and potential fields of the beam and governing equations were finally derived from the variational energy principle. The model allows the piezoelectric lamina to be formulated via a two-dimensional model because of the strong electro-mechanical coupling and the presence of a two-dimensional electric field. Numerical examples of piezoelectric laminated beam are presented. It is shown in this paper that a one-dimensional model for the piezoelectric beam-like layer is inadequate.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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