Exploració per autor "Huerta, Antonio"
Ara es mostren els items 71-90 de 220
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Consistent tangent matrices for substepping schemes
(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
(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
(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
(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
(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
(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
(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 ... -
Deim-based PGD for parametric nonlinear model order reduction
(Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013)
Text en actes de congrés
Accés obertThis book contains the Abstracts of the papers presented at ADMOS 2013, the sixth International Conference on Adaptive Modeling and Simulation, held in Lisbon from June 3 to 5, 2013. Numerical Modeling and Simulation ... -
Desenvolupament d’un simulador numèric del procés de compostatge i aplicació a l’optimització del compostatge de llots i mescles amb altres residuos orgànics
(Agència Catalana de l'Aigua, 2007)
Text en actes de congrés
Accés obertL’objectiu principal del present projecte és l’obtenció d’un simulador, basat en un model estructurat, que permeti optimitzar les condicions del procés de compostatge de llots de depuradora, així com predir-ne ... -
Dimensionless analysis of HSDM and application to simulation of breakthrough curves of highly adsorbent porous media
(2013-05)
Article
Accés obertThe homogeneous surface diffusion model (HSDM) is widely used for adsorption modeling of aqueous solutions. The Biot number is usually used to characterize model behavior. However, some limitations of this characterization ... -
Discontinuous Galerkin methods for the Navier–Stokes equations using solenoidal approximations
(2010-10-20)
Article
Accés obertAn interior penalty method and a compact discontinuous Galerkin method are proposed and compared for the solution of the steady incompressible Navier–Stokes equations. Both compact formulations can be easily applied using ... -
Discontinuous Galerkin methods for the Stokes equations using divergence-free approximations
(2008-07)
Article
Accés obertA discontinuous Galerkin (DG) method with solenoidal approximation for the simulation of incompressible flow is proposed. It is applied to the solution of the Stokes equations. The interior penalty method is employed to ... -
Discretization influence on regularization by two localization limiters
(1994-06)
Article
Accés obertIn materials with a strain-softening characteristic behavior, classical continuum mechanics favors uncontrolled strain localization in numerical analyses. Several methods have been proposed to regularize the problem. Two ... -
Distortions in large aluminum forgings: current situation and simulation challenges
(Springer, 2020-02-28)
Capítol de llibre
Accés restringit per política de l'editorialDistortions after machining of large aluminum forgings are a recurrent problem for the aeronautical industry. These deviations from design geometry are caused by the presence of residual stresses, which are developed along ... -
Effect of the separated approximation of input data in the accuracy of the resulting PGD solution
(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
(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
(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
(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
(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
(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 ...
