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On the consistency of viscoplastic formulations
(Pergamon-Elsevier Science Ltd, 2000-12)
A viscoplastic consistency condition is incorporated into the traditional viscoplastic rate format with two objectives in mind: (i) to develop a tangential material operator for rate sensitive behavior similarly to rate ...
Gravitational Effects in the Collision of Elasto-Viscoplastic Drops on a Vertical Plane
(Mdpi, 2020-06-01)
The collision of drops in a solid substrate is an interesting problem with several practical applications. When the drop is made of a complex fluid the problem presents numerical challenges due to the interaction of the ...
Viscoplastic approach for rate-dependent failure analysis of concrete joints and interfaces
(Pergamon-Elsevier Science Ltd, 2008-12)
In this work, a new rate-dependent interface model for computational analysis of quasi-brittle materials like concrete is presented. The model is formulated on the basis of the inviscid elastoplastic model by [Carol, I., ...
Diffuse and localized failure predictions of Perzyna viscoplastic models for cohesive-frictional materials
(Planta Piloto de Ingeniería Química, 2002-12)
Viscoplastic constitutive formulations are characterized by instantaneous tangent operators which do no exhibit degradation from the elastic properties. As a consequence Viscoplastic materials descriptions were often ...
Formulación matemática del modelo viscoplástico de Perzyna
(Ciencia e Ingeniería, 2010)
Transient motions of elasto-viscoplastic thixotropic materials subjected to an imposed stress field and to stress-based free-surface boundary conditions
(Elsevier B.V., 2016-12-01)
In 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 ...