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Determination of macroscopic electro-mechanical characteristics of 1-3 piezoceramic/polymer composites by a concentric tube model

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1 Author(s)
Jensen, H. ; Dept. of Ind. Acoust., Tech. Univ. of Denmark, Lyngby, Denmark

An axisymmetric concentric tube model of a piezoelectric rod and a concentric elastic tube is used to characterize 1-3 piezoelectric/elastic composites macroscopically. With average displacements of and total forces on the surfaces as the mechanical degrees of freedom, and with charge and potential at the ends of the rod as the electrical degrees of freedom, the relation between the electromechanical degrees of freedom is given in a matrix formulation. A recursive numerical scheme for combining the matrix for the tube and the piezoelectric rod into one for the composite piezoelectric rod is used to directly identify the majority of the e-set of constitutive constants for 1-3 composites. The remaining constitutive constants are estimated from a cubes model to allow inversion of the d-g and h-sets and calculation of other characteristics.<>

Published in:

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:38 ,  Issue: 6 )