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Overall properties of piezoelectric particulate composites: Homogenization estimates and finite-element simulations

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dc.contributor.advisor Lopez-Pamies, Oscar en_US
dc.contributor.advisor T. A., Venkatesh en_US
dc.contributor.author Iyer, Sumantu en_US
dc.contributor.other Department of Mechanical Engineering en_US
dc.date.accessioned 2012-05-15T18:04:10Z
dc.date.accessioned 2015-04-24T14:52:35Z
dc.date.available 2012-05-15T18:04:10Z
dc.date.available 2015-04-24T14:52:35Z
dc.date.issued 2010-12-01 en_US
dc.identifier Iyer_grad.sunysb_0771M_10364.pdf en_US
dc.identifier.uri http://hdl.handle.net/1951/55478 en_US
dc.identifier.uri http://hdl.handle.net/11401/72548 en_US
dc.description.abstract This 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.sponsorship This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. en_US
dc.format Monograph en_US
dc.format.medium Electronic Resource en_US
dc.language.iso en_US en_US
dc.publisher The Graduate School, Stony Brook University: Stony Brook, NY. en_US
dc.subject.lcsh Mechanical Engineering -- Materials Science en_US
dc.subject.other finite-element simulations, homogenization estimates, Piezoelectric composites en_US
dc.title Overall properties of piezoelectric particulate composites: Homogenization estimates and finite-element simulations en_US
dc.type Thesis en_US
dc.mimetype Application/PDF en_US
dc.contributor.committeemember Robert Kukta. en_US

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