Exploració per autor "Huerta, Antonio"
Ara es mostren els items 58-77 de 220
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Bounds and adaptivity for 3D limit analysis
Muñoz, José J.; Bonet Carbonell, Javier; Huerta, Antonio; Peraire Guitart, Jaume (2009-06-08T10:28:14Z)
Text en actes de congrés
Accés obertIn the present paper we compute upper and lower bounds for limit analysis in two and three dimensions. From the solution of the discretised upper and lower bound problems, and from the optimum displacement rate and stress ... -
Bounds for quantities of interest and adaptivity in the element-free Galerkin method
Vidal Seguí, Yolanda; Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (Wiley and Sons, 2008-07)
Article
Accés obertA novel approach to implicit residual-type error estimation in mesh-free methods and an adaptive refinement strategy are presented. This allows computing upper and lower bounds of the error in energy norm with the ultimate ... -
Bounds of functional outputs for parabolic problems. Part I: Exact bounds of the discontinuous Galerkin time discretization
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (2008-03)
Article
Accés obertClassical implicit residual type error estimators require using an underlying spatial finer mesh to compute bounds for some quantity of interest. Consequently, the bounds obtained are only guaranteed asymptotically that ... -
Bounds of functional outputs for parabolic problems. Part II: Bounds of the exact solution
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (2008-03)
Article
Accés obertThe paper introduces a methodology to compute upper and lower bounds for linear-functional outputs of the exact solutions of parabolic problems. In this second part, the bounds account for the error both in space and time. ... -
Challenges for time and frequency domain aeroacoustic solvers
Angeloski, Aleksandar; Discacciati, Marco; Legendre, César; Lielens, Gregori; Huerta, Antonio (2014)
Text en actes de congrés
Accés obertThe linearized Euler equations (LEE) model acoustic propagation in the presence of rotational mean flows. They can be solved in time [1–3] or in frequency [4–6] domain, with both approaches having advantages and disadvantages. ... -
Comparing two algorithms to add large strains to small-strain FE code
Rodríguez Ferran, Antonio; Huerta, Antonio (1998-09)
Article
Accés obertTwo algorithms for the stress update (i.e., time integration of the constitutive equation) in large-strain solid mechanics are discussed, with particular emphasis on two issues: (1) The incremental objectivity; and (2) ... -
Comparison of high-order curved finite elements
Sevilla Cárdenas, Rubén; Fernández Méndez, Sonia; Huerta, Antonio (Wiley and Sons, 2011-02-02)
Article
Accés restringit per política de l'editorialSeveral finite element techniques used in domains with curved boundaries are discussed and compared, with particular emphasis in two issues: the exact boundary representation of the domain and the consistency of the ... -
Computable exact bounds for linear outputs from stabilized solutions of the advection-diffusion-reaction equation
Parés Mariné, Núria; Díez, Pedro; Huerta, Antonio (John Wiley & Sons, 2013-02-01)
Article
Accés obert -
Computation of bounds for anchor problems in limit analysis and decomposition techniques
Muñoz Romero, José; Rabiei, Syednima; Lyamin, Andrei; Huerta, Antonio (Springer, 2013-07-15)
Capítol de llibre
Accés obertNumerical techniques for the computation of strict bounds in limit analyses have been developed for more than thirty years. The efficiency of these techniques have been substantially improved in the last ten years, and ... -
Computational limit analysis for anchors and retaining walls
Muñoz Romero, José; Lyamin, Andrei V.; Huerta, Antonio (Universitat Politècnica de Catalunya. Escola Tècnica Superior de Camins Canals i Ports de Barcelona, 2011-11-15)
Comunicació de congrés
Accés obertThe computation of the bearing capacity of engineering structures commonly relays on results obtained for simple academic examples. Recent developments in computational limit analysis have allowed engineers to compute ... -
Computational vademecums for a fast and reliable simulation of RTM processes
Abisset Chavanne, Emmanuelle; Cueto Prendes, Elias; Huerta, Antonio; Chinesta, Francisco (Universidad de Sevilla. Grupo de Elasticidad y Resistencia de Materiales, 2014)
Text en actes de congrés
Accés obertProper Generalized Decomposition methods allow to obtain an efficient solution for multi-parametric problems without the need for simulating numerous problems to obtain a response surface. Instead, PGD obtains a priori a ... -
Computing bounds for linear functionals of exact weak solutions to Poisson's equation
Sauer-Budge, A. M.; Bonet Carbonell, Javier; Huerta, Antonio; Peraire Guitart, Jaume (2004-01)
Article
Accés obertWe present a method for Poisson’s equation that computes guaranteed upper and lower bounds for the values of piecewise-polynomial linear functional outputs of the exact weak solution of the infinite-dimensional continuum ... -
Consistent tangent matrices for density-dependent finite plasticity models
Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Huerta, Antonio (2001-09)
Article
Accés obertThe consistent tangent matrix for density-dependent plastic models within the theory of isotropic multiplicative hyperelastoplasticity is presented here. Plastic equations expressed as general functions of the Kirchhoff ... -
Consistent tangent matrices for substepping schemes
Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Huerta, Antonio (1999-09)
Report de recerca
Accés obertA very simple and general expression of the consistent tangent matrix for substep- ping time-integration schemes is presented. If needed, the derivatives required for the computation of the consistent tangent moduli can ... -
Consistent tangent matrices for substepping schemes
Pérez Foguet, Agustí; Rodríguez Ferran, Antonio; Huerta, Antonio (2001-06)
Article
Accés obertA very simple and general expression of the consistent tangent matrix for substepping time-integration schemes is presented. If needed, the derivatives required for the computation of the consistent tangent moduli can be ... -
Continuous blending of SPH with finite elements
Fernández Méndez, Sonia; Bonet, J; Huerta, Antonio (2005-06)
Article
Accés obertThis paper proposes a methodology for the continuous blending of the finite element method and smooth particle hydrodynamics. The coupled approximation with finite elements and particles, and the discretization of the ... -
Convergence of finite elements enriched with meshless methods
Fernández Méndez, Sonia; Díez, Pedro; Huerta, Antonio (2003-11)
Article
Accés obertA combined hierarchical approximation based on finite elements and mesh-less methods is proposed and studied. Finite Elements are enriched adding hierarchical shape functions based on a particle distribution. Convergence ... -
Coupling finite elements and particles for adaptivity: an application to consistently stabilized convection–diffusion
Fernández Méndez, Sonia; Huerta, Antonio (2002)
Article
Accés obertA mixed approximation coupling finite elements and mesh-less methods is presented. It allows selective refinement of the finite element solution without remeshing cost. The distribution of particles can be arbitrary. ... -
Decomposition techniques in computational limit analysis
Muñoz Romero, José; Rabiei, Syednima; Huerta, Antonio (2013)
Comunicació de congrés
Accés obertNumerical techniques for the computation of strict bounds in limit analyses have been developed for more than thirty years. The efficiency of these techniques have been substantially improved in the last ten years, and ... -
Deim-based pgd for multi-parametric nonlinear model reduction
Aguado, Jose V.; Chinesta, Francisco; Leygue, Adrien; Cueto, Elías; Huerta, Antonio (CIMNE, 2013)
Text en actes de congrés
Accés obertA new technique for efficiently solving parametric nonlinear reduced order models in the Proper Generalized Decomposition (PGD) framework is presented here. This technique is based on the Discrete Empirical Interpolation ...