Kalorik in ferroelektrischen Werkstoffen – von der Variationsformulierung zur Modellierung und Simulation

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dc.contributor.corporatenameKassel, Universität Kassel, Fachbereich Maschinenbau
dc.contributor.refereeRicoeur, Andreas (Prof. Dr.)
dc.contributor.refereeKästner, Markus (Prof. Dr.)
dc.date.accessioned2022-01-14T07:38:33Z
dc.date.available2022-01-14T07:38:33Z
dc.date.issued2021
dc.descriptionZugleich: Dissertation, Universität Kassel, 2021
dc.identifierdoi:10.17170/kobra-202112145254
dc.identifier.urihttp://hdl.handle.net/123456789/13517
dc.language.isoger
dc.publisherkassel university press
dc.publisher.placeKassel
dc.relation.isbn978-3-7376-1006-3
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectFerroelektrikager
dc.subjectKalorikger
dc.subjectThermo-ferroelektrisches Materialverhaltenger
dc.subjectVariationsformulierungger
dc.subjectMehrfeldproblemeger
dc.subjectModellierung und Simulationger
dc.subjectLeistungsbilanzger
dc.subject.ddc600
dc.subject.swdThermodynamikger
dc.subject.swdFerroelektrikumger
dc.subject.swdWerkstoffger
dc.subject.swdStoffeigenschaftger
dc.subject.swdLeistungsbilanzger
dc.subject.swdMehrfeldproblemger
dc.subject.swdModellierungger
dc.subject.swdSimulationger
dc.titleKalorik in ferroelektrischen Werkstoffen – von der Variationsformulierung zur Modellierung und Simulationger
dc.typeBuch
dc.type.versionpublishedVersion
dcterms.abstractFerroelectric materials are nowadays used in many areas due to their special electro-mechanical properties. Since their material properties are partly strongly dependent on temperature and the temperature can have a decisive influence on the reliability and life time of ferroelectric components, caloric aspects have increasingly been investigated in recent years, not least because the electrocaloric effect is suitable for solid-state refrigeration. The thesis deals with the modeling and simulation of nonlinear thermo-ferroelectric material behavior. The focus is particularly on the modeling of temperature changes due to domain wall motion in the material and its numerical implementation. To establish a corresponding numerical discretization scheme, a weak form has to be derived, which conatins the constitutive and balance equations of dissipative thermo-electro-magneto-mechanical multi-field problems. The method of weighted residuals is usually used for this purpose, since a classical functional of caloric and electrodynamic problems, as a prerequisite for a cariational approach, is not known. Deficiencies lie in the different units, which, in contrast to mechanical stress, electric displacement and magnetic field, intrinsically involve time rates in the fluxes of heat and electrical current. By combining classical variational principles, i.e. Hamilton’s and Jourdain’s principles, and introducing a heat and a charge flux potential, a modified variational principle is introduced and referred to as the principle of Hamilton-Jourdain. Based on the weak formulation, an algebraic system of equations is finally set up and implemented together with the thermo-electro-mechanical constitutive model into a commercial finite element software, which is finally used to numerically solve various boundary value problems.eng
dcterms.accessRightsopen access
dcterms.creatorWingen, Marius
dcterms.dateAccepted2021-05-2021
dcterms.extentxvi, A5
dcterms.source.seriesBerichte des Instituts für Mechanik
dcterms.source.volumeBericht 4/2021
kup.bindingSoftcover
kup.institutionFB 15 / Maschinenbau
kup.iskuptrue
kup.price39,00
kup.seriesBerichte des Instituts für Mechanikger
kup.sizeDIN A5
kup.subjectNaturwissenschaft, Technik, Informatik, Medizinger
kup.typDissertation
ubks.epflichttrue

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