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dc.contributor.advisorLopez-Pamies, Oscar; T. A., Venkateshen_US
dc.contributor.authorIyer, Sumantuen_US
dc.contributor.otherDepartment of Mechanical Engineeringen_US
dc.date.accessioned2012-05-15T18:04:10Z
dc.date.available2012-05-15T18:04:10Z
dc.date.issued1-Dec-10en_US
dc.date.submittedDec-10en_US
dc.identifierIyer_grad.sunysb_0771M_10364.pdfen_US
dc.identifier.urihttp://hdl.handle.net/1951/55478
dc.description.abstractThis work presents a) an analytic model based on homogenizationestimates to obtain explicit solutions for the effective properties ofparticulate piezoelectric composites and b) a three-dimensionalfinite-element model to compare finite-element results and study thebehaviour of porous piezoelectric composites with four differentgeometric configurations. The analytic model extends the Suquet[29] estimates method to the piezoelectric domain where acomplete set of electromechanical constants are obtained for threepiezoelectric ceramics belonging to different symmetry classes.Specific results are generated for the cases of a square arrangementof cylindrical pores, where the alignment of the pores is in thedirection of poling of the matrix phase and a cubic arrangement ofspherical pores. The trends obtained from the analytic model arecompared with the finite-element model and found to be in goodagreement for all components of effective piezoelectric constants uptolarge volume fractions. A three-dimensional finite element model isdeveloped in part II of the thesis to completelycharacterize the behaviour of a general porous piezoelectric compositewith pores of 0-3 type flat cuboidal, 0-3 type cylindrical, 0-3 typespherical, and 1-3 type cylindrical connectivities. By consideringmaterials from different symmetry classes, it is demonstrated thatpiezoelectric composites designed with 0-3 type flat cuboidal poresare more suitable for hydrophone applications by identifying thevariation in piezoelectric strain coefficient and the hydrostaticfigure of merit with varying porosity volume fraction.en_US
dc.description.sponsorshipStony Brook University Libraries. SBU Graduate School in Department of Mechanical Engineering. Lawrence Martin (Dean of Graduate School).en_US
dc.formatElectronic Resourceen_US
dc.language.isoen_USen_US
dc.publisherThe Graduate School, Stony Brook University: Stony Brook, NY.en_US
dc.subject.lcshMechanical Engineering -- Materials Scienceen_US
dc.subject.otherfinite-element simulations, homogenization estimates, Piezoelectric compositesen_US
dc.titleOverall properties of piezoelectric particulate composites: Homogenization estimates and finite-element simulationsen_US
dc.typeThesisen_US
dc.description.advisorAdvisor(s): Oscar Lopez-Pamies. Venkatesh T. A. Committee Member(s): Robert Kukta.en_US
dc.mimetypeApplication/PDFen_US


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