Exploració per autor "Huerta, Antonio"
Ara es mostren els items 31-50 de 220
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Adapting Broyden method to handle linear constraints imposed via Lagrange multipliers
Rodríguez Ferran, Antonio; Huerta, Antonio (Wiley and Sons, 1999-09)
Article
Accés obertVarious non-linear equation solvers are adapted to handle linear constraints via the Lagrange-multiplier technique. This adaptation process turns out to be quite straightforward for Newton-Raphson methods and rank-two ... -
Adaptive analysis based on error estimation for nonlocal damage models
Rodríguez Ferran, Antonio; Arbós, I; Huerta, Antonio (2001-05)
Article
Accés obertAn adaptive finite element strategy for nonlocal damage computations is presented. The proposed approach is based on the combination of a residual-type error estimator and quadrilateral h-remeshing. A distinctive feature ... -
Adaptive analysis of yield line patterns in plates with the Arbitrary Lagrangian-Eulerian method
Askes, Harm; Rodríguez Ferran, Antonio; Huerta, Antonio (1999-02)
Article
Accés obertPlasticity models provide suitable tools to describe the so-called yield line pattern that occurs with the failure of plates. However, in a Lagrangian description a huge number of finite elements are needed for accurate ... -
Adaptive finite element strategies based on error assessment
Huerta, Antonio; Rodríguez Ferran, Antonio; Díez, Pedro; Sarrate Ramos, Josep (Wiley and Sons, 1999-09)
Article
Accés obertTwo main ingredients are needed for adaptive finite element computations. First, the error of a given solution must be assessed, by means of either error estimators or error indicators. After that, a new spatial discretization ... -
Adaptivity based on error estimation for viscoplastic softening materials
Díez, Pedro; Arroyo Balaguer, Marino; Huerta, Antonio (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 ... -
Advanced harmonic techniques for solving the transient heat equation
Aguado, José Vicente; Huerta, Antonio; Chinesta, Francisco; Cueto Prendes, Elias; Leygue, Adrien (Sociedad Española de Métodos Numéricos en Ingeniería (SEMNI), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialSimulation-based management of processes has always been a big challenge because of the difficulty to merge two apparently opposed idea s: the real time handling demanded by the process, and the traditionally strong ... -
ALE stress update for transient and quasistatic processes
Rodríguez Ferran, Antonio; Casadei, F.; Huerta, Antonio (Wiley and Sons, 1998-09)
Article
Accés obertA key issue in Arbitrary Lagrangian-Eulerian (ALE) non-linear solid mechanics is the correct treatment of the convection terms in the constitutive equation. These convection terms, which reflect the relative motion between ... -
Algebraic PGD for tensor separation and compression: an algorithmic approach
Díez, Pedro; Zlotnik, Sergio; García González, Alberto; Huerta, Antonio (2018-07)
Article
Accés obertProper Generalized Decomposition (PGD) is devised as a computational method to solve high-dimensional boundary value problems (where many dimensions are associated with the space of parameters defining the problem). The ... -
An elastic plastic damage formulation for concrete: application to elementary and structural tests
Jason, L; Huerta, Antonio; Pijaudier-Cabot, Gilles; Ghavamian, S (2006-11)
Article
Accés obertPure elastic damage models or pure elastic plastic constitutive laws are not totally satisfactory to describe the behaviour of concrete. They indeed fail to reproduce the unloading slopes during cyclic loading which define ... -
An error estimator for separated representations of highly multidimensional models
Asaad Ammaar, Mouafk; Chinesta, F.; Díez, F.; Huerta, Antonio (2010)
Article
Accés obert -
An improved algorithm to smooth graded quadrilateral meshes preserving the prescribed element size
Sarrate Ramos, Josep; Huerta, Antonio (2001-02)
Article
Accés obertIn the generation of quadrilateral unstructured meshes, special attention is focussed to the shape of the elements. This is because it is well known that the distortion of the elements and the accuracy of the analysis are ... -
An upwind cell centred Total Lagrangian finite volume algorithm for nearly incompressible explicit fast solid dynamic applications
Haider, Jibran; Lee, Chun Hean; Gil, Antonio; Huerta, Antonio; Bonet Carbonell, Javier (2018-10-01)
Article
Accés obertThe paper presents a new computational framework for the numerical simulation of fast large strain solid dynamics, with particular emphasis on the treatment of near incompressibility. A complete set of first order hyperbolic ... -
Analysis of the vane test considering size and time effects
Pérez Foguet, Agustí; Ledesma Villalba, Alberto; Huerta, Antonio (1997-09)
Report de recerca
Accés obert -
Analysis of the vane test considering size and time effects
Pérez Foguet, Agustí; Ledesma Villalba, Alberto; Huerta, Antonio (1999-04)
Article
Accés obertAn analysis of the vane test using an Arbitrary Lagrangian-Eulerian formulation within a finite element framework is presented. This is suitable for soft clays for which the test is commonly used to measure in situ undrained ... -
Application of an ALE formulation for density-dependent hyperelastic-plastic models to the simulation of powder compaction processes
Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Huerta, Antonio (2001)
Text en actes de congrés
Accés obertDifferent quasi-static cold compaction processes of powders have been simulated with a density-dependent plastic model. The model is formulated within the framework of isotropic finite strain multiplicative hyperelastoplasticity. ... -
Applications of numerical differentiation to computational plasticity
Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Huerta, Antonio (1998-07)
Report de recerca
Accés obert -
Arbitrary Lagrangian-Eulerian (ALE) formulation for hyperelastoplasticity
Rodríguez Ferran, Antonio; Pérez Foguet, Agustí; Huerta, Antonio (Wiley and Sons, 2002-02)
Article
Accés obertThe arbitrary Lagrangian-Eulerian (ALE) description in non-linear solid mechanics is nowadays standard for hypoelastic-plastic models. An extension to hyperelastic-plastic models is presented here. A fractional-step method ... -
Arbitrary lagrangian-eulerian finite element analysis of strain localization in transient problems
Pijaudier-Cabot, Gilles; Bode, L; Huerta, Antonio (John Wiley & Sons, 1995-10)
Article
Accés obertNon-local models guaranty that finite element computations on strain softening materials remain sound up to failure from a theoretical and computational viewpoint. The non-locality prevents strain localization with zero ... -
Arbitrary Lagrangian-Eulerian formulation for fluid-rigid body interaction
Sarrate Ramos, Josep; Huerta, Antonio; Donea, J (2001-03)
Article
Accés obertA new formulation for two-dimensional fluid–rigid body interaction problems is developed. In particular, vortex-induced oscillations of a rigid body in viscous incompressible flow are studied. The incompressible Navier–Stokes ... -
Arbitrary Lagrangian-Eulerian methods
Donea, J; Huerta, Antonio; Ponthot, J -Ph; Rodríguez Ferran, Antonio (John Wiley & Sons, 2004-10)
Capítol de llibre
Accés restringit per política de l'editorialAim of the present chapter is to provide an in-depth survey of arbitrary Lagrangian-Eulerian (ALE) methods, including both conceptual aspects of the mixed kinematical description and numerical implementation details. ...