Graded piezoelectric cylinders subjected to high electric fields and comparison of their frequency response with piezoelectric plates

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DOIResolve DOI: http://doi.org/10.1007/s11012-014-9935-8
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TypeArticle
Journal titleMeccanica
ISSN0025-6455
Volume49
Issue6
Pages15271538; # of pages: 12
SubjectCylinders (shapes); Electric fields; Finite element method; Galerkin methods; Piezoelectric ceramics; Piezoelectric devices; Piezoelectricity; Domain wall motion; Functionally graded; High electric fields; Nonlinear behaviours; Piezoceramic cylinder; Piezoelectric coefficient; Piezoelectric cylinder; Piezoelectric property; Frequency response
AbstractIn this paper we investigated a radially polarized piezoceramic cylinder with graded piezoelectric properties, and used a nonlinear model for piezoceramics subjected to high electric fields. We investigated the nonlinear behavior of this material by examining changes in its electric-field-dependent dielectric and piezoelectric coefficients caused by domain wall motion. The Galerkin finite-element method was used to solve the governing equations of the axisymmetrically loaded heterogeneous piezoceramic medium subjected to harmonic electrical loading. Stress, displacement, resonance, and frequency responses were compared for homogeneous and graded cylinders; additionally, we compared the results of linear and nonlinear studies. We showed that the effective stress was higher within the graded cylinder than within the homogeneous cylinder, and that the nonlinearity caused by domain wall motion was less pronounced for the graded cylinder than for the homogeneous cylinder. The frequency responses of homogeneous and heterogeneous piezocylinders were also compared with those of piezoelectric plates. We concluded that-unlike for graded plates, which have a more desirable frequency response than homogeneous plates-graded cylinders are not superior to homogeneous cylinders. The finite-element solution in this paper is verified by simulations using COMSOL Multiphysics software.
Publication date
PublisherSpringer International Publishing
LanguageEnglish
AffiliationNational Research Council Canada; Ocean, Coastal and River Engineering
Peer reviewedYes
NPARC number21272936
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Record identifiercc554e29-06d1-49af-b901-c798c79585d4
Record created2014-12-03
Record modified2016-05-09
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