Exploració per tema "Viscoplasticitat"
Ara es mostren els items 1-10 de 10
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A Lagrangian PFEM approach for non-Newtonian viscoplastic materials
(Universitat Politècnica de Catalunya. CIMNE, 2017-07)
Article
Accés obertThis paper presents the application of a stabilized mixed Particle Finite Element Method (PFEM) to the solution of viscoplastic non-Newtonian flows. The application of the proposed model to the deformation of granular ... -
A stabilized formulation with maximum entropy meshfree approximants for viscoplastic flow simulation in metal forming
(2015-07-01)
Article
Accés obertThe finite element method is the reference technique in the simulation of metal forming and provides excellent results with both Eulerian and Lagrangian implementations. The latter approach is more natural and direct but ... -
Adaptivity based on error estimation for viscoplastic softening materials
(2000-02)
Article
Accés obertThis paper focuses on the numerical simulation of strain softening mechanical problems. Two problems arise: (1) the constitutive model has to be regular and (2) the numerical technique must be able to capture the two scales ... -
An invariant based transversely-isotropic constitutive model for unidirectional fibre reinforced composites considering the matrix viscous effects
(2019-11)
Article
Accés obertFibres Reinforced Polymers (FRPs) are found in several applications in aeronautics, space and in the automotive industry. These applications are exposed to loading conditions, including impact, which results in a complex ... -
Finite element modelling of shear bands in porous media by means of non-local viscoplasticity
(CIMNE, 2015)
Text en actes de congrés
Accés obertThis work presents a consistent numerical approach in the framework of analyzing the localization process in a slope stability problem. An already existing model, embedded in Mechanics of multiphase porous media, is enhanced ... -
Improvements on the numerical analysis of viscoplastic-type non-Newtonian fluid flows
(2014)
Text en actes de congrés
Accés obertThe aim of this work is to delve into the numerical analysis of viscoplastic-type non-Newtonian fluid flows with the objective of carrying out more advanced numerical simulations for them. Specifically, improvements in the ... -
Numerical analysis of the transpose diffusive term for viscoplastic-type non-Newtonian fluid flows using a collocated variable arrangement
(2015-05-01)
Article
Accés obertThe aim of this work is to delve into the numerical analysis of viscoplastic-type non-Newtonian fluid flows. Specifically, improvements in the spatial discretization schemes and the temporal integration methods have been ... -
Production and characterization of Fe-based metallic glasses
(Universitat Politècnica de Catalunya, 2008-06-20)
Projecte Final de Màster Oficial
Accés obertAmorphous metallic alloys were developed at 1960. Since then, scientists have not stopped researching in order to improve their properties and find new applications. The innovation in techniques has let to the creation ... -
Stress-driven integration strategies and m-AGC tangent operator for Perzyna viscoplasticity and viscoplastic relaxation: application to geomechanical interfaces
(2017-04)
Article
Accés obertThe paper proposes a stress-driven integration strategy for Perzyna-type viscoplastic constitutive models, which leads also to a convenient algorithm for viscoplastic relaxation schemes. A generalized trapezoidal rule for ... -
Viscoplastic constitutive models for zero-thickness interface elements, formulation and applications
(2019)
Text en actes de congrés
Accés obertAn energy-based work-softening visco-plastic model for zero-thickness interface elements has been developed as an extension of an existing elastic-perfectly-viscoplastic formulation. In the inviscid limit the model also ...