dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal do Rio de Janeiro (UFRJ)
dc.date.accessioned2018-11-26T17:10:37Z
dc.date.available2018-11-26T17:10:37Z
dc.date.created2018-11-26T17:10:37Z
dc.date.issued2016-12-01
dc.identifierInternational Journal Of Engineering Science. Oxford: Pergamon-elsevier Science Ltd, v. 109, p. 165-201, 2016.
dc.identifier0020-7225
dc.identifierhttp://hdl.handle.net/11449/162156
dc.identifier10.1016/j.ijengsci.2016.08.004
dc.identifierWOS:000387627700009
dc.identifierWOS000387627700009.pdf
dc.description.abstractIn the present work, we present an approach to handle transient flows of elasto-viscoplastic thixotropic (EVPT) materials under the action of the gravity force field and subjected to free-surface boundary conditions that are stress-based. This kind of conditions are common in problems where the motion is unknown a priori, i.e. the motion is treated as a consequence while the forces are the cause. The model for the EVPT material employed is within the scope of a recently developed thermodynamic backbone for elasto-viscoplastic thixotropic materials. The finite difference Marker and Cell method is used to investigate effects of elasticity, thixotropy, and plasticity varying the Weissenberg number, the dimensionless thixotropic equilibrium time, and the yield number, respectively. The Cartesian Poiseuille flow is used to test the main features of the numerical scheme. The evolution in time of an initially square and fully-structured block is captured. The structure level and shape evolutions of the block reveal the capability of the present numerical approach to handle the complexity of the material and the free-surface motion. (C) 2016 Elsevier Ltd. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationInternational Journal Of Engineering Science
dc.relation2,820
dc.rightsAcesso aberto
dc.sourceWeb of Science
dc.subjectElasto-viscoplastic thixotropic materials
dc.subjectNumerical solution
dc.subjectFinite difference marker and cell method
dc.subjectTransient computations
dc.subjectFree-surface boundary conditions
dc.titleTransient motions of elasto-viscoplastic thixotropic materials subjected to an imposed stress field and to stress-based free-surface boundary conditions
dc.typeArtículos de revistas


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