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dc.contributor.authorAlexandrou, Andreas N.en
dc.contributor.authorConstantinos, N.en
dc.contributor.authorGeorgiou, G.en
dc.creatorAlexandrou, Andreas N.en
dc.creatorConstantinos, N.en
dc.creatorGeorgiou, G.en
dc.date.accessioned2019-05-06T12:23:16Z
dc.date.available2019-05-06T12:23:16Z
dc.date.issued2008
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/48172
dc.description.abstractWhen SSM material is subjected to a sudden transient the rate of buildup (aging) is negligible compared to the rate of breakdown (shear rejuvenation). While this is generally true, due to prolonged processing or the geometry the local shear rate in some regions may become equal or lower than the critical value, where aging becomes as important as shear rejuvenation. In this work we simulate in detail shear rejuvenation and aging in semisolid slurries. Using a standard thixotropic model used widely for modeling SSM suspensions but a novel computational method we reveal and confirm numerically for the first time shear banding. The phenomenon is found to be time dependent where the material first yields fully and then, after a certain time the yielded front retreats to form two distinct bands -one yielded and one unyielded. This phenomenon must be accounted for in the evaluation of the material constants since the time scale of the process is similar to the time scale of the phenomenon.en
dc.language.isoengen
dc.sourceSolid State Phenomenaen
dc.subjectMathematical modelsen
dc.subjectAgingen
dc.subjectColloidsen
dc.subjectSuspensionsen
dc.subjectSuspensions (fluids)en
dc.subjectAlloysen
dc.subjectBuildupen
dc.subjectHerschel-bulkley fluiden
dc.subjectHerschel-Bulkley fluidsen
dc.subjectMetallic compoundsen
dc.subjectShear bandingen
dc.subjectStructural parameteren
dc.subjectSuspensions (components)en
dc.subjectThixotropyen
dc.subjectYield stressen
dc.subjectAging of materialsen
dc.subjectCoherency parameteren
dc.subjectEndocrinologyen
dc.subjectShear rejuvenationen
dc.titlePredictions of structure breakdown, buildup and shear banding in semisolid suspensionsen
dc.typeinfo:eu-repo/semantics/article
dc.description.volume141-143
dc.description.startingpage313
dc.description.endingpage318
dc.author.facultyΠολυτεχνική Σχολή / Faculty of Engineering
dc.author.departmentΤμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering
dc.type.uhtypeArticleen
dc.description.totalnumpages313-318


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