Exploració per autor "Huerta, Antonio"
Ara es mostren els items 13-32 de 220
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A new damage model based on non-local displacements
Rodríguez Ferran, Antonio; Morata, I; Huerta, Antonio (2005-04)
Article
Accés obertA new non-local damage model is presented. Non-locality (of integral or gradient type) is incorporated into the model by means of non-local displacements. This contrasts with existing damage models, where a non-local strain ... -
A new least-squares approximation of affine mappings for sweep algorithms
Roca Navarro, Francisco Javier; Sarrate Ramos, Josep; Huerta, Antonio (2010-06)
Article
Accés obertThis paper presents a new algorithm to generate hexahedral meshes in extrusion geometries. Several algorithms have been devised to generate hexahedral meshes by projecting the cap surfaces along a sweep path. In all of ... -
A note on a numerical benchmark test: an axisymmetric shell under ring loads
Vila Rius, Agnès; Rodríguez Ferran, Antonio; Huerta, Antonio (1997-03)
Article
Accés obertIn this paper, a well-known numerical benchmark test which is usually solved with displacement control for low values of the load eccentricity is examined for a complete range of eccentricities of the ring load. For a ... -
A note on upper bound formulations in limit analysis
Muñoz Romero, José; Huerta, Antonio; Bonet Carbonell, Javier; Peraire Guitart, Jaume (John Wiley & Sons, 2012-08-24)
Article
Accés restringit per política de l'editorialIn this paper we study some recent formulations for the computation of upper bounds in limit analysis. We show that a previous formulation presented by the authors does not guarantee the strictness of the upper bound, ... -
A posteriori error estimation for standard finite element analysis
Díez, Pedro; Egozcue Rubí, Juan José; Huerta, Antonio (1998-09)
Article
Accés obertA new residual type estimator based on projections of the error on subspaces of locally-supported functions is presented. The estimator is defined by a standard element-by-element refinement. First, an approximation of the ... -
A regularised-adaptive Proper Generalised Decomposition implementation for coupled magneto-mechanical problems with application to MRI scanners
Barroso Gassiot, Guillem; Gil Ruiz, Antonio Javier; Ledger, Paul D.; Mallett, Mike; Huerta, Antonio (2020-01-01)
Article
Accés obertLatest developments in high-strength Magnetic Resonance Imaging (MRI) scanners with in-built high resolution, have dramatically enhanced the ability of clinicians to diagnose tumours and rare illnesses. However, their ... -
A robust updated lagrangian smooth particle hydrodynamics for fast solid dynamics
Refachinho de Campos, Paulo Roberto; Antonio Javier, Gil; Chun Hean, Lee; Huerta, Antonio; Giacomini, Matteo; Bonet Carbonell, Javier (Association for Computing Machinery (ACM), 2021)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper introduces a new Incremental Updated Lagrangian Smooth Particle Hydrodynamics (SPH) computational framework in the form of a system of first order conservation laws. Specifically, the linear momentum conservation ... -
A second-order face-centred finite volume method for elliptic problems
Vieira, Luan M.; Giacomini, Matteo; Sevilla Cárdenas, Rubén; Huerta, Antonio (2020-01-01)
Article
Accés obertA second-order face-centred finite volume method (FCFV) is proposed. Contrary to the more popular cell-centred and vertex-centred finite volume (FV) techniques, the proposed method defines the solution on the faces of the ... -
A simple microstructural viscoelastic model for flowing foams
Ibáñez, Rubén; Scheuer, Adrien; Abisset-Chavanne, Emmanuelle; Chinesta, Francisco; Huerta, Antonio; Keunings, Roland (2019-03)
Article
Accés obertThe numerical modelling of forming processes involving the flow of foams requires taking into account the different problem scales. Thus, in industrial applications a macroscopic approach is suitable, whereas the macroscopic ... -
A simple shock-capturing technique for high-order discontinuous Galerkin methods
Huerta, Antonio; Casoni Rero, Eva; Peraire Guitart, Jaume (2012-08)
Article
Accés obertThis article presents a novel shock-capturing technique for the discontinuous Galerkin (DG) method. The technique is designed for compressible flow problems, which are usually characterized by the presence of strong shocks ... -
A staggered high-dimensional Proper Generalised Decomposition for coupled magneto-mechanical problems with application to MRI scanners
Barroso Gassiot, Guillem; Seoane Chouciño, Marcos; Gil Ruiz, Antonio Javier; Ledger, Paul D.; Mallett, Mike; Huerta, Antonio (2020-10-01)
Article
Accés obertManufacturing new Magnetic Resonance Imaging (MRI) scanners represents a computational challenge to industry, due to the large variability in material parameters and geometrical configurations that need to be tested during ... -
A superconvergent HDG method for stokes flow with strongly enforced symmetry of the stress tensor
Giacomini, Matteo; Karkoulias, Alexandros; Sevilla Cárdenas, Rubén; Huerta, Antonio (2018-12)
Article
Accés obertThis work proposes a superconvergent hybridizable discontinuous Galerkin (HDG) method for the approximation of the Cauchy formulation of the Stokes equation using same degree of polynomials for the primal and mixed variables. ... -
A superconvergent hybridisable discontinuous Galerkin method for linear elasticity
Sevilla Cárdenas, Rubén; Giacomini, Matteo; Karkoulias, Alexandros; Huerta, Antonio (John Wiley & sons, 2018-10-12)
Article
Accés obertThe first superconvergent hybridisable discontinuous Galerkin method for linear elastic problems capable of using the same degree of approximation for both the primal and mixed variables is presented. The key feature of ... -
A unified approach to remeshing strategies for finite element h-adaptativity
Díez, Pedro; Huerta, Antonio (1999-07)
Article
Accés obertIn h-adaptivity, a remeshing strategy is needed to compute the distribution of required element size using the estimated error distribution. Several authors have introduced different remeshing strategies yielding very ... -
A weakly compressible hybridizable discontinuous Galerkin formulation for fluid-structure interaction problems
Spina, Andrea la; Kronbichler, Martin; Giacomini, Matteo; Wall, Wolfgang A.; Huerta, Antonio (2020-12-01)
Article
Accés obertA scheme for the solution of fluid-structure interaction (FSI) problems with weakly compressible flows is proposed in this work. A novel hybridizable discontinuous Galerkin (HDG) method is derived for the discretization ... -
Accuracy of two stress update algorithms for shear-free large deformations paths
Rodríguez Ferran, Antonio; Huerta, Antonio (1999-06)
Article
Accés obertThe behavior of two stress update algorithms for shear-free large deformation paths is analyzed. The first algorithm has a truncation error of order 1. The second algorithm has a truncation error of order 2. As a consequence, ... -
Accurate upper and lower error bounds by solving flux-free local problems in
Díez, Pedro; Parés Mariné, Núria; Huerta, Antonio (2004-12)
Article
Accés obertTwo implicit residual type estimators yielding upper bounds of the error are presented which do not require flux equilibration. One of them is based on the ideas introduced in [MAC 00, CAR 99, MOR 03, PRU 02]. The new ... -
Adaptació de l’ensenyament semipresencial dels mètodes numèrics dins del marc del sistema ects
Sarrate Ramos, Josep; Rodríguez Ferran, Antonio; Fernández Méndez, Sonia; Sevilla Cárdenas, Rubén; Rozados, Oriol; Díez, Pedro; Huerta, Antonio (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2008-02-07)
Text en actes de congrés
Accés obertEn l’actualitat els mètodes numèrics s’han consolidat com una disciplina horitzontal en l’àmbit de l’enginyeria civil. En aquest sentit, les assignatures bàsiques relacionades directament amb els mètodes numèrics han ... -
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 ...