Exploració per autor "Huerta, Antonio"
Ara es mostren els items 85-104 de 220
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Effect of the separated approximation of input data in the accuracy of the resulting PGD solution
Zlotnik, Sergio; Díez, Pedro; Huerta, Antonio (CIMNE, 2015)
Text en actes de congrés
Accés obertSeparated representations are commonly used to avoid the so-called curse of dimensionality, that is, an exponential increase in the number of degrees of freedom with the number of dimensions. In order to use separated ... -
Effect of the separated approximation of input data in the accuracy of the resulting PGD solution
Zlotnik, Sergio; Díez, Pedro; González, David; Huerta, Antonio (Springer, 2015-11-25)
Article
Accés obertThe Proper Generalized Decomposition (PGD) requires separability of the input data (e.g. physical properties, source term, boundary conditions, initial state). In many cases the input data is not expressed in a separated ... -
Efficiency and accuracy of high-order computations and reduced order modelling in coastal engineering wave propagation problems
Modesto Galende, David; Giorgiani, Giorgio; Zlotnik, Sergio; Huerta, Antonio (2012)
Text en actes de congrés
Accés restringit per política de l'editorialSeveral numerical issues have to be considered when solving wave propagation problems, between which there are the artificial boundary conditions, the small geometrical features that can be influential or the variable ... -
Efficiency of high-order elements for continuous and discontinuous Galerkin methods
Huerta, Antonio; Angeloski, Aleksandar; Roca Navarro, Francisco Javier; Peraire Guitart, Jaume (John Wiley & sons, 2013-11)
Article
Accés obertTo evaluate the computational performance of high-order elements, a comparison based on operation count is proposed instead of runtime comparisons. More specifically, linear versus high-order approximations are analyzed ... -
Efficient and accurate approach for powder compaction problems
Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Huerta, Antonio (2003-02)
Article
Accés obertIn this paper, a new approach for powder cold compaction simulations is presented. A density-dependent plastic model within the framework of finite strain multiplicative hyperelastoplasticity is used to describe the highly ... -
Efficient and reliable nonlocal damage models
Rodríguez Ferran, Antonio; Morata Ruano, Irene; Huerta, Antonio (2004-07)
Article
Accés obertWe present an efficient and reliable approach for the numerical modelling of failure with nonlocal damage models. The two major numerical challenges––the strongly nonlinear, highly localized and parameter-dependent structural ... -
Efficient unstructured quadrilateral mesh generation
Sarrate Ramos, Josep; Huerta, Antonio (Wiley and Sons, 2000-09)
Article
Accés obertThis work is devoted to the description of an algorithm for automatic quadrilateral mesh generation. The technique is based on a recursive decomposition of the domain into quadrilateral elements. This automatically generates ... -
Elliptic harbor wave model with perfectly matched layer and exterior bathymetry effects
Modesto Galende, David; Fernández Méndez, Sonia; Huerta, Antonio (2016-09)
Article
Accés obertStandard strategies for dealing with the Sommerfeld condition in elliptic mild-slope models require strong assumptions on the wave field in the region exterior to the computational domain. More precisely, constant bathymetry ... -
Encapsulated PGD algebraic toolbox operating with high-dimensional data
Díez, Pedro; Zlotnik, Sergio; García González, Alberto; Huerta, Antonio (2019-11-28)
Article
Accés obertIn its original conception, proper generalized decomposition (PGD) provides explicit parametric solutions, denoted as computational vademecums or digital abacuses, to parametric boundary value problems. The PGD approach ... -
Enrichissement des interpolations d'elements finis en utilisant des méthodes de particules
Huerta, Antonio; Fernández Méndez, Sonia; Díez, Pedro (2002-11)
Article
Accés obertIn the framework of meshless methods the interpolation is based on a distribution of particles : it is not necessary to define connectivities. In this methods the interpolation can be easily enriched, increasing the number ... -
Enrichment and coupling of the finite element and meshless methods
Huerta, Antonio; Fernández Méndez, Sonia (Wiley and Sons, 2000-09)
Article
Accés obertA mixed hierarchical approximation based on finite elements and meshless methods is presented. Two cases are considered. The first one couples regions where finite elements or meshless methods are used to interpolate: ... -
Error estimation and adaptivity for nonlinear FE analysis
Huerta, Antonio; Rodríguez Ferran, Antonio; Díez, Pedro (2002-03)
Article
Accés obertAn adaptive strategy for nonlinear finite-element analysis, based on the combination of error estimation and h-remeshing, is presented. Its two main ingredients are a residual-type error estimator and an unstructured ... -
Error estimation and adaptivity for nonlocal damage models
Rodríguez Ferran, Antonio; Huerta, Antonio (2000-11)
Article
Accés obertNonlocal damage models are typically used to model failure of quasi-brittle materials. Due to brittleness, the choice of a particular model or set of parameters can have a crucial influence on the structural response. To ... -
Error estimation and quality control
Díez, Pedro; Parés Mariné, Núria; Huerta, Antonio (John Wiley & sons, 2010-12-15)
Capítol de llibre
Accés restringit per política de l'editorial -
Error estimation for adaptive computations on shell structures
Díez, Pedro; Huerta, Antonio (2000-03)
Article
Accés obertThe finite element discretization of a shell structure introduces two kinds of errors: the error in the functional approximation and the error in the geometry approximation. The first is associated with the finite dimensional ... -
Error estimation including pollution assessment for nonlinear finite element analysis
Huerta, Antonio; Díez, Pedro (2000-01)
Article
Accés obertA residual type error estimator for nonlinear finite element analysis is introduced. This error estimator solves local problems avoiding both the computation of the flux jumps and the associated flux splitting procedure. ... -
Estimation of crack opening from a two-dimensional continuum-based finite element computation
Dufour, F.; Legrain, Dominique; Pijaudier-Cabot, Gilles; Huerta, Antonio (2012-11)
Article
Accés obertDamage models are capable of representing crack initiation and mimicking crack propagation within a continuum framework. Thus, in principle, they do not describe crack openings. In durability analyses of concrete structures ... -
Exact bounds for linear outputs of the advection-diffusion-reaction equation using flux-free error estimates
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (2009-01)
Article
Accés obertThe paper introduces a methodology to compute strict upper and lower bounds for inear-functional outputs of the exact solutions of the advection-reaction-diffusion equation. The proposed approach is an alternative to the ... -
Extraction of a crack opening from a continuous approach using regularized damage models
Dufour, F.; Pijaudier-Cabot, Gilles; Choinska, M; Huerta, Antonio (2008-11)
Article
Accés restringit per política de l'editorialCrack opening governs many transfer properties that play a pivotal role in durability analyses. Instead of trying to combine continuum and discrete models in computational analyses, it would be attractive to derive from ... -
Étude de la stabilité d'une formulation incompressible traitée par X-FEM
Legrain, G; Moes, N; Huerta, Antonio (2006-06)
Article
Accés obertThe treatment of (near-)incompressibility is a major concern for the simulation of rubber-like parts, or forming processes. The use of mixed finite element methods is known to prevent the locking of the F.E. approximation ...