• R. Codina, O. Zienkiewicz
    Commun. Numer. Meth. Engng (2001). Vol 18 (2), pp. 99-112

    Abstract
    In this work we compare two apparently different stabilization procedures for the finite element approximation of the incompressible Navier–Stokes equations. The first [...]

  • R. Codina, J. Blasco, G. Buscaglia, A. Huerta
    Int. J. Numer. Meth. Fluids (2001). Vol. 37 (4), pp. 419-444

    Abstract
    We discuss in this paper some implementation aspects of a finite element formulation for the incompressible Navier-Stokes which allows the use of equal order velocity-pressure [...]

  • A. Folch, J. Martí i Castell, R. Codina
    Journal of Geophysical Research (2001). Vol. 106 (B8), pp. 16 163-16 175

    Abstract
    We propose a simple physical model to characterize the dynamics of magma withdrawal during the course of caldera-forming eruptions. Simplification involves considering such [...]

  • J. Blasco, R. Codina
    Applied Numerical Mathematics (2001). Vol. 38 (4), pp. 475-497

    Abstract
    In this paper we analyze a pressure stabilized, finite element method for the unsteady, incompressible Navier–Stokes equations in primitive variables; for the [...]

  • Journal of Computational Physics (2001). Vol. 170 (1), pp. 112-140

    Abstract
    The objective of this paper is to analyze the pressure stability of fractional step finite element methods for incompressible flows. For the classical first order projection [...]

  • G. Houzeaux, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2001). Vol 17 (3), pp. 179-190

    Abstract
    This work presents a conservative scheme for iteration‐by‐subdomain domain decomposition (DD) strategies applied to the finite element solution of flow problems. The DD [...]

  • Comput. Methods Appl. Mech. Engrg., (2001). Vol. 190 (20-21), pp. 2681-2706

    Abstract
    In this paper we describe a finite element formulation for the numerical solution of the stationary Navier-Stokes equations including Coriolis forces and the permeability [...]

  • International Journal of Plasticity (2001). 17 (12), pp. 1565-1622.

    Abstract
    This paper deals with a thermodynamically consistent numerical formulation for coupled thermoplastic problems including phase-change phenomena and frictional contact. The [...]

  • J. Rojek, O. Zienkiewicz, E. Oñate, E. Postek
    Journal of Materials Processing Technology (2001). Vol. 119, pp. 41-47

    Abstract
    This paper presents some advances of finite element explicit formulation for simulation of metal forming processes. Because of their computational efficiency, finite element [...]

  • E. Oñate, H. Tschöpe, P. Wriggers
    Engineering Computations (2001). Vol. 18 (3-4), pp. 642-662

    Abstract
    The paper describes the extension of the critical displacement method (CDM), presented by Oñate and Matias in 1996, to the instability analysis of structures with [...]

  • R. Scotta, R. Vitaliani, A. Saetta, E. Oñate, A. Hanganu
    Computers and Structures (2001). Vol. 79 (7), pp. 737-755

    Abstract
    A local isotropic single parameter scalar model that can simulate the mechanical behaviour of quasi-brittle materials, such as concrete, is described. [...]

  • Computers and Structures (2001). Vol. 79 (22-25), pp. 2151-2163

    Abstract
    The basis of the finite point method (FPM) for the fully meshless solution of elasticity problems in structural mechanics is described. A stabilization [...]

  • E. Oñate, F. Zárate
    Int. J. Numer. Meth. Engng. (2000). Vol. 47 (1-3), pp. 557-603

    Abstract
    The paper describes how the finite element method and the finite volume method can be successfully combined to derive two new families of thin plate and shell triangles with [...]

  • G. Chiandussi, G. Bugeda, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2000). Vol. 188, pp. 727-742

    Abstract
    The present paper proposes a new technique for the definition of the shape design variables in 2D and 3D optimisation problems. It can be applied to the discrete model of [...]

  • Comput. Methods Appl. Mech. Engrg., (2000). Vol. 185, pp. 245-277

    Abstract
    In this work a generalized anisotropic elastoplastic constitutive model in large deformation is presented. It is used for the analysis of fiber-reinforced composite materials [...]

  • Comput. Methods Appl. Mech. Engrg., (2000). Vol. 182 (3-4), pp. 355-370

    Abstract
    A stabilized finite element formulation for incompressible viscous flows is derived. The starting point are the modified Navier-Stokes equations incorporating naturally the [...]

  • Anales de Mecánica de Fractura (2000). Vol. 17, pp. 127-154

    Abstract
    El artículo es una panorámica de los aspectos teóricos y algunas aplicaciones prácticas de los modelos de fractura desarrollados por diversos grupos [...]

  • P. Diez, M. Arroyo, A. Huerta
    Mechanics of Cohesive-Frictional Materials (2000). Vol. 5 (2), pp. 87-112

    Abstract
    This 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 [...]

  • A. Huerta, P. Diez
    Comput. Methods Appl. Mech. Engrg., (2000). Vol. 181 (1-3), pp. 21-41

    Abstract
    A 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 [...]

  • P. Diez, A. Huerta
    European Journal of Finite Elements (2000). Vol. 9 (1-3), pp. 49-66

    Abstract
    The 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. [...]

  • Comput. Methods Appl. Mech. Engrg., (2000). Vol. 190 (13-14), pp. 1579-1599

    Abstract
    Two apparently different forms of dealing with the numerical instability due to the incompressibility constraint of the stokes problem are analyzed in this paper. The first [...]

  • R. Codina, J. Blasco
    Numerische Mathematik (2000). Vol. 87 (1), pp. 59-81

    Abstract
    The purpose of this paper is to analyze a finite element approximation of the stationary Navier-Stokes equations that allows the use of equal velocity-pressure interpolation. [...]

  • G. Buscaglia, F. Basombrío, R. Codina
    Int. J. Numer. Meth. Fluids (2000). Vol. 34 (1), pp. 65-92

    Abstract
    Fourier analysis techniques are applied to the stabilized finite element method (FEM) recently proposed by Codina and Blasco for the approximation of the incompressible Navier–Stokes [...]

  • Int. J. Numer. Meth. Fluids (2000). Vol. 33 (5), pp. 737-766

    Abstract
    The objective of this paper is twofold. First, a stabilized finite element method for the incompressible Navier-Stokes is presented, and several numerical experiments are [...]

  • Comput. Methods Appl. Mech. Engrg., (2000). Vol. 188 (200), pp. 61-82

    Abstract
    A stabilized finite element method for solving systems of convection-diffusion-reaction equations is studied in this paper. The method is based on the subgrid scale approach [...]

  • R. Codina, J. Blasco
    Comput. Methods Appl. Mech. Engrg., (2000). Vol. 182 (3-4), pp. 277-300

    Abstract
    In this paper we present a stabilized finite element formulation for the transient incompressible Navier–Stokes equations. The main idea is to introduce as a new unknown [...]

  • M. Cervera, T. Prato, J. Oliver
    Journal of Structural Engineering (2000). 126 (9), pp. 1062-1068

    Abstract
    The increasing number of roller compacted concrete (RCC) dams being built around the world demands accurate methodologies for the realistic short- and long-term evaluations [...]

  • M. Cervera, J. Oliver, T. Prato
    Journal of Structural Engineering (2000). 126 (9), pp. 1053-1060

    Abstract
    The increasing number of roller compacted concrete (RCC) dams being built around the world demands accurate methodologies for the realistic short- and long-term evaluations [...]

  • J. D'Elía, M. Storti, S. Idelsohn
    Advances in Engineering Software (2000). Vol. 31 (5), pp. 339-346

    Abstract
    A weak form to compute the dipolar and monopolar surface gradients, related to a low-order panel method, is shown. The flow problem is formulated by means of a three-dimensional [...]

  • J. D'Elía, M. Storti, S. Idelsohn
    Advances in Engineering Software (2000). Vol. 31 (5), pp. 347-353

    Abstract
    A closed form for the computation of the dipolar and monopolar influence coefficients related to a low-order panel method is shown. The flow problem is formulated by means [...]

  • Computing and Visualization in Science (2000). Vol. 3 (1), pp. 67-75

    Abstract
    A stabilized finite point method (FPM) for the meshless analysis of incompressible fluid flow problems is presented. The stabilization approach is based in the finite increment [...]

  • R. Codina, C. Morton, E. Oñate, O. Soto
    Int. J. of Num. Meths. for Heat and Fluid Flow (2000). Vol. 10 (5-6), pp. 616-633

    Abstract
    Presents a numerical strategy for the aerodynamic analysis of large buildings, with an application to the simulation of the air flow within a telescope building. The finite [...]

  • G. Chiandussi, G. Bugeda, E. Oñate
    Commun. Numer. Meth. Engng (2000). Vol. 16 (1), pp. 1-19

    Abstract
    A simple method to automatically update the finite element mesh of the analysis domain is proposed. The method considers the mesh as a fictitious elastic body subjected to [...]

  • Int. J. Numer. Meth. Engng. (1999). Vol. 45 (5), pp. 503-528

    Abstract
    An unstructured finite element solver to evaluate the ship‐wave problem is presented. The scheme uses a non‐structured finite element algorithm for the Euler or Navier–Stokes [...]

  • S. Botello, J. Marroquín, E. Oñate
    Int. J. Numer. Meth. Engng. (1999). Vol. 45 (8), pp. 1069-1084

    Abstract
    In this paper we study the performance of two stochastic search methods: Genetic Algorithms and Simulated Annealing, applied to the optimization of pin‐jointed steel bar [...]

  • J. Lopez, S. Oller, E. Oñate, J. Lubliner
    Int. J. Numer. Meth. Engng. (1999). Vol. 46 (10), pp. 1651-1671

    Abstract
    Masonry has been a broadly used material since the beginning of human life. Despite its popularity, the analysis of masonry structures is a complex task due to the heterogeneity [...]

  • J. Ruberts, S. Oller, E. Casas, S. Proença, E. Oñate
    Int. J. Numer. Meth. Engng. (1999). Vol. 46 (10), pp. 1595-1607

    Abstract
    A geometrically non‐linear formulation for composites and the resulting explicit dynamic finite element algorithm are presented. The proposed formulation assumes that small [...]

  • Comput. Methods Appl. Mech. Engrg., (1999). Vol. 173, pp. 241-255

    Abstract
    In the present work a generalized streamline finite element formulation able to deal with incompressible flow problems is presented. In the finite element framework, this [...]

  • A. Huerta, A. Rodríguez-Ferran, P. Diez, J. Sarrate
    Int. J. Numer. Meth. Engng. (1999). Vol. 46 (10), pp. 1803-1818

    Abstract
    Two 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 [...]

  • P. Diez, A. Huerta
    Comput. Methods Appl. Mech. Engrg., (1999). Vol. 176 (1-4), pp. 215-229

    Abstract
    In h-adaptivity, a remeshing strategy is needed to compute the distribution of required element size using the estimated error distribution. Several authors have introduced [...]

  • R. Codina, O. Soto
    Int. J. Numer. Meth. Engng. (1999). Vol. 46 (9), pp. 1559-1573

    Abstract
    In this work we present a finite element formulation to simulate the filling of thin moulds. The model has as starting point a 3‐D approach using either div‐stable elements, [...]

  • O. Zienkiewicz, P. Nithiarasu, R. Codina, M. Vázquez, P. Ortiz
    Int. J. Numer. Meth. Fluids (1999). Vol. 31 (1), pp. 359-392

    Abstract
    In 1995 the two senior authors of the present paper introduced a new algorithm designed to replace the Taylor–Galerkin (or Lax–Wendroff) methods, used by them [...]

  • R. Codina, O. Soto
    Int. J. Numer. Meth. Fluids (1999). Vol. 30 (3), 309-334

    Abstract
    The main purpose of this paper is to describe a finite element formulation for solving the equations for k and ε of the classical k–ε [...]

  • R. Folch, M. Vázquez, R. Codina, J. Martí i Castell
    Computers and Geotechnics (1999). Vol. 25 (3), pp. 263-275

    Abstract
    We develop an algorithm to solve numerically the Navier–Stokes equations using a finite element method. The algorithm uses a fractional step approach that allows [...]

  • Journal of Computational Physics (1999). Vol. 148 (2), pp. 467-496

    Abstract
    In this paper we present a numerical formulation to solve the incompressible Navier–Stokes equations written in a rotating frame of reference. The method is based on [...]

  • Comput. Methods Appl. Mech. Engrg., (1999). Vol. 177 (3-4), pp. 401-426

    Abstract
    The evolution of the contact surfaces wear may become particularly important in the definition of the frictional behavior, in particular for frictional contact problems involving [...]

  • Structural Optimization (1999). Vol. 17 (2-3), pp. 162-171

    Abstract
    This paper describes some considerations around the analytical structural shape sensitivity analysis when the structural behaviour is computed using the finite element method [...]

  • E. Oñate, M. Manzán
    Int. J. Numer. Meth. Fluids (1999). Vol. 31 (1), pp. 203-221

    Abstract
    A procedure to derive stabilized space–time finite element methods for advective–diffusive problems is presented. The starting point is the stabilized balance [...]

  • Int. J. Numer. Meth. Fluids (1999). Vol. 30 (2), pp. 161-178

    Abstract
    This paper presents a methodology for solving shape optimization problems in the context of fluid flow problems including adaptive remeshing. The method is based on the computation [...]

  • M. Cervera, J. Oliver, T. Prato
    Journal of Engineering Mechanics (1999). Vol. 125 (9), pp. 1028-1038

    Abstract
    In this work a coupled thermo-chemo-mechanical model for the behavior of concrete at early ages is proposed. This paper presents the formulation and assessment of the mechanical [...]

  • M. Cervera, T. Prato, J. Oliver
    Journal of Engineering Mechanics (1999). Vol. 125 (9), pp. 1018-1027

    Abstract
    In this work a coupled thermo-chemo-mechanical model for the behavior of concrete at early ages is proposed. The model allows simulation of the observed phenomena of hydration, [...]

  • M. Cervera, O. Manzoli, J. Oliver
    International Journal of Plasticity (1999). Vol. 15 (3), pp. 319-351

    Abstract
    The paper presents the Strong Discontinuity Approach for the analysis and simulation of strong discontinuities in solids using continuum plasticity models. Kinematics [...]

  • International Journal of Plasticity (1999). Vol. 15 (1), pp. 1-34

    Abstract
    This paper deals with a numerical formulation for coupled thermoplastic problems including phase-change phenomena. The final goal is to get an accurate, efficient and robust [...]

  • G. Bugeda, M. Cervera, G. Lombera
    Rapid Prototyping Journal (1999). Vol. 5 (1), pp. 21-26

    Abstract
    A finite element model has been developed for the 3D simulation of the sintering of a single track during a selective laser sintering process (SLS). The model takes into account [...]

  • Int. J. Numer. Meth. Engng. (1999). Vol. 46 (9), pp. 1575-1591

    Abstract
    The paper presents an up‐to‐date finite element numerical model for fully coupled thermo‐mechanical problems, focussing in the simulation of solidification processes [...]

  • R. Löhner, C. Yang, E. Oñate, S. Idelsohn
    Applied Numerical Mathematics (1999). Vol. 31 (3), pp. 271-293

    Abstract
    An unstructured grid-based, parallel-free surface solver is presented. The overall scheme combines a finite-element, equal-order, projection-type 3-D incompressible flow solver [...]

  • S. Botello, E. Oñate, J. Miquel
    Computers and Structures (1999). Vol. 70 (6), pp. 635-646

    Abstract
    The paper presents a new triangle for analysis of laminate plates and shells. The in-plane degrees of freedom are interpolated quadratically whereas a linear layer-wise approximation [...]

  • Computational Mechanics (1998). Vol. 21 (4-5), pp. 283-292

    Abstract
    The finite point method (FPM) is a gridless numerical procedure based on the combination of weighted least square interpolations on a cloud of points with point collocation [...]

  • A. Morán, E. Oñate, J. Miquel
    Int. J. Numer. Meth. Engng. (1998). Vol. 42 (2), pp. 219-236

    Abstract
    The paper presents a general and straightforward procedure based on the use of the strain energy density for deriving symmetric expressions of the secant and tangent stiffness [...]

  • R. Taylor, O. Zienkiewicz, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (1998). Vol. 152, pp. 73-84

    Abstract
    In this paper we consider the application of hierarchical functions to base approximations which are a partition of unity. The particular hierarchical functions used are added [...]

  • Comput. Methods Appl. Mech. Engrg., (1998). Vol. 151 (1-2), pp. 233-265

    Abstract
    The concept of the so called “artificial or balancing diffusion” used to stabilize the numerical solution of advective–diffusive transport and fluid flow [...]

  • B. Suarez, E. Blanco, L. Gil, P. Zapata, E. Oñate
    European Journal of Engineering Education (1998). Vol. 23 (2), pp. 243-254

    Abstract
    In this paper, a methodology for computer-aided training of structural problems by the finite element method is presented. The resulting educational program, named ED-Elas2D, [...]

  • P. Díez, J. Egozcue, A. Huerta
    Comput. Methods Appl. Mech. Engrg., (1998). Vol. 163 (1-4), pp. 141-157

    Abstract
    A 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 [...]

  • P. Nithiarasu, O. Zienkiewicz, B. Sai, K. Morgan, R. Codina, M. Vázquez
    Int. J. Numer. Meth. Fluids (1998). Vol. 28 (9), pp. 1325-1353

    Abstract
    The performance of different shock capturing viscosities has been examined using our general fluid mechanics algorithm. Four different schemes have been tested, both for viscous [...]

  • J. Blasco, R. Codina, A. Huerta
    Int. J. Numer. Meth. Fluids (1998). Vol. 28 (10), pp. 1391-1419

    Abstract
    An implicit fractional-step method for the numerical solution of the time-dependent incompressible Naiver-Stokes equations in primitive variables is developed and studied [...]

  • R. Folch, J. Marti, R. Codina, M. Vázquez
    Journal of Geophysical Research: Solid Earth (1998). Vol. 103, 20883-20899

    Abstract
    An axisymmetrical numerical model has been developed in order to find the temporal evolution of pressure, the position of the exsolution level, the velocity field, the eruption [...]

  • Comput. Methods Appl. Mech. Engrg., (1998). Vol. 156, (1-4), pp. 185-210

    Abstract
    In this paper we describe several finite element methods for solving the diffusion-convection-reaction equation. None of them is new, although the presentation is non-standard [...]

  • R. Codina, M. Vázquez, O. Zienkiewicz
    Int. J. Numer. Meth. Fluids (1998). Vol. 27 (1-4), 13-32

    Abstract
    In this paper we consider some particular aspects related to the semi‐implicit version of a fractional step finite element method for compressible flows that we have developed [...]

  • Archives of Comp. Meths. Engng. (1998). Vol. 5 (3), pp. 243-301

    Abstract
    In this paper a numerical model for the analysis of coupled thermomechanical multi-body frictional contact problems at finite deformations is presented. The multi-body frictional [...]

  • R. Faria, M. Cervera, J. Oliver
    Int. J. Solids and Structures (1998). Vol. 35 (14), pp. 1533-1558

    Abstract
    Within the framework of continuum damage mechanics, a new constitutive damage model for massive concrete is presented, mainly intended for the seismic analysis of gravity [...]

  • Journal of Computational Physics (1998). Vol. 146 (2), pp 570-602

    Abstract
    An absorbing boundary condition for the ship wave resistance problem is presented. In contrast to the Dawson-like methods, it avoids the use of numerical viscosities in the [...]

  • J. Rojek, E. Oñate, E. Postek
    Journal of Materials Processing Technology (1998). Vols. 80-81, pp. 620-627

    Abstract
    This paper presents the application of an explicit dynamic finite element code for simulation of metal forming processes, of both sheet and bulk forming. The experiences [...]

  • R. Löhner, E. Oñate
    Commun. Numer. Meth. Engng (1998). Vol. 14 (12), pp. 1097-1108

    Abstract
    An algorithm to construct boundary‐conforming, isotropic clouds of points with variable density in space is described. The input required consists of a specified mean point [...]

  • Comput. Methods Appl. Mech. Engrg., (1997). Vol. 143, pp. 49-67

    Abstract
    A finite element formulation for solving incompressible flow problems is presented. In this paper, the generalized streamline operator presented by Hughes et al. (Comput. [...]

  • J. Egozcue, G. Grande, P. Diez
    Revista Internacional de Cálculo de Estructuras (1997). Vol. 2 (1), pp. 35-58

    Abstract
    Vulnerability of civil structures and systems under seismic actions have been extensively used and studied in the last decade. However, the goals of those studies are very [...]

  • R. Codina, O. Soto
    Comput. Methods Appl. Mech. Engrg., (1997). Vol. 142 (3-4), pp. 215-234

    Abstract
    The objective of this paper is to present a finite element formulation to solve the Stokes problem with Coriolis force. This force results in a skew-symmetric term in the [...]

  • R. Codina, J. Blasco
    Comput. Methods Appl. Mech. Engrg., (1997). Vol. 143 (3–4), pp. 373-391

    Abstract
    In this paper we study a variational formulation of the Stokes problem that accommodates the use of equal velocity-pressure finite element interpolations. The motivation of [...]

  • Comput. Methods Appl. Mech. Engrg., (1997). Vol. 142 (3-4), pp. 303-334

    Abstract
    In this paper a new frictional time integration algorithm suitable for large slip multibody frictional contact problems is presented. The algorithm is introduced within the [...]

  • J. Heinrich, S. Idelsohn, E. Oñate, C. Vionnet
    Int. J. Numer. Meth. Engng. (1996). Vol. 39 (6), pp. 1053-1071

    Abstract
    We examine the use of natural boundary conditions and conditions of the Sommerfeld type for finite element simulations of convective transport in viscous incompressible flows. [...]

  • S. Idelsohn, J. Heinrich, E. Oñate
    Int. J. Numer. Meth. Engng. (1996). Vol. 39 (9), pp. 1455-1473

    Abstract
    A Petrov–Galerkin formulation based on two different perturbations to the weighting functions is presented. These perturbations stabilize the oscillations that are normally [...]

  • E. Oñate, W. Matias
    Comput. Methods Appl. Mech. Engrg., (1996). Vol. 134 (1-2), pp. 135-161

    Abstract
    A new technique for predicting structural instability points using the finite element method is presented. The approach is based on the estimation of the critical displacement [...]

  • E. Oñate, S. Idelsohn, O. Zienkiewicz, R. Taylor, C. Sacco
    Comput. Methods Appl. Mech. Engrg., (1996). Vol. 195, pp. 6750-6777

    Abstract
    flow type problems is presented. The method is based on the use of a weighted least square interpolation procedure together with point collocation for evaluating the approximation [...]

  • O. Zienkiewicz, B. Sai, K. Morgan, R. Codina
    Int. J. Numer. Meth. Fluids (1996). Vol. 23, 787-809

    Abstract
    In an earlier paper, Zienkiewicz and Codina (Int. j. numer. methods fluids, 20, 869–885 (1995)) presented a general algorithm for the solution of both compressible [...]

  • M. Cervera, O. Manzoli, J. Oliver
    Engineering Computations (1996). Vol. 25 (9), pp. 987-1010.

    Abstract
    In this paper a rate‐dependent isotropic damage model developed for the numerical analysis of concrete dams subjected to seismic excitation is presented. The model is shown [...]

  • M. Cervera, R. Codina, M. Galindo
    Engineering Computations (1996). Vol. 13 (6), pp. 4-30

    Abstract
    Outlines a general methodology for the solution of the system of algebraic equations arising from the discretization of the field equations governing coupled problems. Considers [...]

  • E. Oñate, S. Idelsohn, O. Zienkiewicz, R. Taylor
    Int. J. Numer. Meth. Engng. (1996). Vol. 39 (22), pp. 3839-3866

    Abstract
    The paper presents a fully meshless procedure fo solving partial differential equations. The approach termed generically the ‘finite point method’ is based on [...]

  • J. Rojek, J. Jovicevic, E. Oñate
    Journal of Materials Processing Technology (1996). Vol. 60 (1-4), pp. 243-247

    Abstract
    The paper is aimed to present industrial applications of sheet stamping simulation using new finite element formulations developed in the International Center for Numerical [...]

  • S. Oller, E. Oñate, J. Canet
    Commun. Numer. Meth. Engng (1996). Vol. 12 (8), pp. 471-482

    Abstract
    A general constitutive model adequate for analysis of the thermomechanical response of composite materials is presented. The model is based on the mixture of the basic substances [...]

  • Int. J. Solids and Structures (1996). Vol. 33 (5), pp. 647-673

    Abstract
    A coupled thermomechanical model to simulate solidification problems in casting is presented. The model is formulated from a phenomenological point of view using a general [...]

  • Int. J. Solids and Structures (1996). Vol. 33 (17), pp. 2501-2518

    Abstract
    In this paper a generalized elasto-plastic damage model for the analysis of multiphase frictional composite materials is presented. Details of the derivation of the secant [...]

  • Int. J. Solids and Structures (1996). Vol. 33 (20-22), pp. 3179-3186

    Abstract
    The paper describes a hygro-thermo-mechanical constitutive model appropriate for numerical simulation of multiphase composite material behaviour. The theory is based [...]

  • Computational Mechanics (1995). Vol. 15 (6), pp. 572-593

    Abstract
    In this paper the general non symmetric parametric form of the incremental secant stiffness matrix for non linear analysis of solids using the finite element metod is derived. [...]

  • F. Flores, E. Oñate, F. Zarate
    Computational Mechanics (1995). Vol. 17 (1-2), pp. 107-114

    Abstract
    A comparison between new and existing triangular finite elements based on the shell theory proposed by Juan Carlos Simo and co-workers is presented. Particular emphasis is [...]

  • O. Zienkiewicz, K. Morgan, B. Sai, R. Codina, M. Vasquez
    Int. J. Numer. Meth. Fluids (1995). Vol. 20 (8-9), pp. 887-913

    Abstract
    The algorithm introduced in Part I of this paper is applied in its explicit form to a variety of problems in order to demonstrate its wide range of applicability and excellent [...]

  • O. Zienkiewicz, R. Codina
    Int. J. Numer. Meth. Fluids (1995). Vol. 20, 869-885

    Abstract
    The paper outlines the formulation of a novel algorithm which can be used for the solution of both compressible and incompressible Navier‐Stokes or Euler equations. Full [...]

  • Int. J. Numer. Meth. Fluids (1995). Vol. 20 (8-9), pp. 915-934

    Abstract
    This paper presents a methodology for solving shape optimization problems in the context of fluid flow problems including adaptive remeshing. The method is based on the computation [...]

  • M. Cervera, R. Faria, J. Oliver
    Earthquake Engineering Structural Dynamics (1995). Vol. 24 (9), pp. 1125-1245

    Abstract
    In this paper a general methodology for the analysis of large concrete dams subjected to seismic excitation is outlined. It is valid both for gravity dams (2D representation) [...]

  • Rapid Prototyping Journal (1995). Vol. 1 (2), pp. 13-23

    Abstract
    Stereolithography (SLA) is one of the most important techniques used in rapid prototyping processes. It has a great industrial interest because it allows for dramatic time [...]

  • E. Oñate, J. Rojek, C. Garino
    Journal of Materials Processing Technology (1995). Vol. 50 (1-4), pp. 17-38

    Abstract
    This paper describes the objectives and current status of the research project NUMISTAMP currently under development at the International Center for Numerical Methods in Engineering [...]

  • Commun. Numer. Meth. Engng (1995). Vol. 11 (2), pp. 137-148

    Abstract
    A fixed‐mesh method for the analysis of transient forming processes is presented. The mesh covers material regions and zones through which the material may flow. These last [...]

  • A. Heege, P. Alart, E. Oñate
    Engineering Computations (1995). Vol. 12 (7), pp. 641-656

    Abstract
    A consistent formulation for unilateral contact problems including frictional work hardening or softening is proposed. The approach is based on an augmented Lagrangian approach [...]

  • Engineering Computations (1995). Vol. 12 (3), pp. 245-262

    Abstract
    This paper shows a generalization of the classic isotropic plasticity theory to be applied to orthotropic or anisotropic materials. This approach assumes the existence of [...]

  • Int. J. Numer. Meth. Engng. (1994). Vol. 37 (19), pp. 3323-3341

    Abstract
    In this paper a comparison between the finite element and the finite volume methods is presented in the context of elliptic, convective–diffusion and fluid flow problems. [...]

  • Int. J. Numer. Meth. Engng. (1994). Vol. 37 (20), pp. 3441-3465

    Abstract
    A finite element formulation for solving multidimensional phase‐change problems is presented. The formulation considers the temperature as the unique state variable, it [...]

  • E. Oñate, F. Zárate, F. flores
    Int. J. Numer. Meth. Engng. (1994). Vol. 37 (15), pp. 2569-2582

    Abstract
    A new plate triangle based on Reissner–Mindlin plate theory is proposed. The element has a standard linear deflection field and an incompatible linear rotation field [...]

  • E. Oñate, M. Cervera, O. Zienkiewicz
    Int. J. Numer. Meth. Engng. (1994). Vol. 37 (2), pp. 181-201

    Abstract
    A general Finite Volume Method (FVM) for the analysis of structural problems is presented. It is shown that the FVM can be considered to be a particular case of finite elements [...]

  • Computing Systems in Engineering (1994). Vol. 5 (1), pp. 91-102

    Abstract
    This work presents a methodology based on the use of adaptive mesh refinement (AMR) techniques in the context of shape optimization problems analyzed by the Finite Element [...]

  • R. Codina, U. Schäfer, E. Oñate
    Int. J. of Num. Meths. for Heat and Fluid Flow (1994). Vol. 4 (1), pp. 291-310

    Abstract
    In this paper we consider several aspects related to the application of the pseudo‐concentration techniques to the simulation of mould filling processes. We discuss, in [...]

  • Int. J. Numer. Meth. Engng. (1993). Vol. 36 (8), pp. 1395-1412

    Abstract
    In this paper we present an iterative penalty finite element method for viscous non‐Newtonian creeping flows. The basic idea is solving the equations for the difference [...]

  • Journal of Physique IV (1993). Vol. 3 (C7), pp. 1171-1180

    Abstract
    This paper summarizes the recent work of the authors in the numerical simulation of casting processes. In particular, a coupled thermomechanical model to simulate the solidification [...]

  • Comput. Methods Appl. Mech. Engrg., (1993). Vol. 110 (3-4), pp. 325-342

    Abstract
    To avoid the local oscillations that still remain using the streamline-upwind/Petrov-Galerkin formulation for the scalar convection-diffusion equation, the introduction of [...]

  • Int. J. Numer. Meth. Engng. (1993). Vol. 36, 1445-1464

    Abstract
    The stability and accuracy of the forward Euler scheme for the semidiscrete problem arising from the space discretization of the convection‐diffusion equation using the [...]

  • Comput. Methods Appl. Mech. Engrg., (1993). Vol. 110 (3-4), pp. 237-262

    Abstract
    The objective of this paper is to analyse an iterative procedure for the finite element solution of the Stokes and Navier-Stokes stationary problems. For the latter case, [...]

  • Engineering Computations (1993). Vol. 10 (6), pp. 543-561

    Abstract
    A general methodology for deriving thin plate bending elements with a single degree of freedom per node is presented. The formulation is based on the combination of a standard C0 [...]

  • Engineering Computations (1993). Vol. 10 (4), pp. 307-321

    Abstract
    The concepts of solution error and optimal mesh in adaptive finite element analysis are revisited. It is shown that the correct evaluation of the convergence rate of the error [...]

  • E. Oñate, O. Zienkiewicz, B. Suarez, R. Taylor
    Int. J. Numer. Meth. Engng. (1992). Vol. 33 (2), pp. 345-367

    Abstract
    In this paper the necessary requirements for the good behaviour of shear constrained Reissner–Mindlin plate elements for thick and thin plate situations are re‐interpreted [...]

  • Comput. Methods Appl. Mech. Engrg., (1992). Vol. 94, pp. 239-262

    Abstract
    In this paper the functions of the Péclet number that appear in the intrinsic time of the streamline upwind/Petrov-Galerkin (SUPG) formulation are analyzed for quadratic [...]

  • M. Cervera, M. Galindo, J. Oliver
    Dam Engng. (1992). Vol. 3 (1), pp. 1-22.

    Abstract
    The paper presents the computational model developed to study an existing large gravity dam suffering from observed "pathological behavior" resulting concrete hydration. [...]

  • Journal of Materials Processing Technology (1992). Vol. 34 (1-4), pp. 109-116

    Abstract
    In this paper some results of a wide experimental program are presented and compared with some finite element solution of sheet metal forming problems using a viscous shell [...]

  • Int. J. Numer. Meth. Engng. (1990). Vol. 30 (8), pp. 1577-1593

    Abstract
    In this paper the possibilities of the viscous voided shell approach for deriving bending/membrane finite elements for sheet metal forming problems are presented. These elements [...]

  • S. Oller, E. Oñate, J. Oliver, J. Lubliner
    Engineering Fracture Mechanics (1990). Vol. 35 (1-2-3), pp. 219-231

    Abstract
    In this paper a plastic damage model for nonlinear finite element analysis of concrete is presented. The model is based on standard plasticity theory for frictional [...]

  • M. Cervera, J. Oliver, E. Herrero, E. Oñate
    Engineering Fracture Mechanics (1990). Vol. 35 (1-3), pp. 573-585

    Abstract
    The paper presents a computational model for the analysis of large concrete gravity dams subjected to severe damage due to internal actions. It has been observed in several [...]

  • O. Zienkiewicz, R. Taylor, P. Papadopoulos, E. Oñate
    Computers and Structures (1990). Vol. 35 (4), pp. 505-522

    Abstract
    In recent years a series of elements based on Reissner-Mindlin assumptions and using discrete (collocation type) constraints has been introduced. These elements have [...]

  • J. Lubliner, J. Oliver, S. Oller, E. Oñate
    Int. J. Solids and Structures (1989). Vol. 25 (3), pp. 299-326

    Abstract
    In this paper a constitutive model based on an internal variable-formulation of plasticity theory for the non-linear analysis of concrete is presented. The model uses a new [...]

  • J. Canet, B. Suarez, E. Oñate
    Computers and Structures (1989). Vol. 31 (6), pp. 967-975

    Abstract
    In this paper a finite strip formulation based on Reissner-Mindlin plate theory for dynamic analysis of prismatic shell type structure is presented. Detailed expressions of [...]

  • Int. J. Numer. Meth. Engng. (1988). Vol. 25 (1), pp. 227-251

    Abstract
    A formal analogy between the equations of pure plastic and viscoplastic flow theory for void‐containing metals and those of standard non‐linear elasticity is presented. [...]

  • E. Dvorkin, E. Oñate, J. Oliver
    Int. J. Numer. Meth. Engng. (1988). Vol. 26 (7), pp. 1597-1613

    Abstract
    An incremental Total Lagrangian Formulation for curved beam elements that includes the effect of large rotation increments is developed. A complete and symmetric tangent stiffness [...]

  • E. Alarcón, E. Alonso, D. Aubry, K. Axelsson, E. Oñate
    Int. J. Numer. Meth. Engng. (1988). Vol. 26 (11), pp. 2559-2568

    Abstract
    This letter represents an initiative started by a number of researchers signed below who are working in the field of numerical modelling of soil mechanics problems. We belive [...]

  • B. Suarez, J. Canet, E. Oñate
    Engineering Computations (1988). Vol. 5 (2), pp. 158-164

    Abstract
    A unified approach for the vibration analysis of curved or straight prismatic plates and bridges and axisymmetric shells using a finite strip method based in Reissner—Mindlin [...]

  • E. Oñate, S. Oller, J. Oliver, J. Lubliner
    Engineering Computations (1988). Vol. 5 (4), pp. 309-319

    Abstract
    A constitutive model based on classical plasticity theory for non‐linear analysis of concrete structures using finite elements is presented. The model uses the typical parameters [...]

  • M. Cervera, E. Hinton, O. Hassan
    Computers and Structures (1987). Vol. 25 (6), pp. 845-869

    Abstract
    This paper describes an efficient and accurate, 3-D finite element model which may be adopted in the nonlinear analysis of reinforced concerete plate and shell structures. [...]

  • J. Oliver, E. Oñate
    Int. J. Numer. Meth. Engng. (1986). Vol. 23 (2), pp. 253-274

    Abstract
    A geometrically nonlinear finite element formulation based on a total Lagrangian approach for axisymmetric shells, arches and frames has been presented. The formulation allows [...]

  • M. Cervera, Y. Liu, E. Hinton
    Engineering Computations (1986). Vol. 3 (3), pp.235-242

    Abstract
    A hierarchically preconditioned conjugate gradient (PCG) method for finite element analysis is presented. Its use is demonstrated for the difficult problem of the non‐linear [...]

  • J. Oliver, E. Oñate, J. Peraire, R. Chueca
    Hormigón y Acero (1985). Vol. 155, pp. 99-123

  • J. Oliver, E. Oñate
    Journal of Pipelines (1985). Vol. 5 (1), pp. 15-35

    Abstract
    In this paper a finite element formulation for the deformation analysis of submarine pipelines during laying operations is presented. The formation allows for large displacement/rotations [...]

  • J. Oliver, E. Oñate
    Int. J. Numer. Meth. Engng. (1984). Vol. 20 (12), pp. 2253-2281

    Abstract
    A total Lagrangian finite element formulation for the geometrically nonlinear analysis (large displacement/large rotations) of shells is presented. Explicit expressions of [...]

  • B. Suárez, E. Oñate
    Anales de Ingeniería Mecánica (1984). Vol. 2 (1), pp. 59-68

    Abstract
    Se representa una formulación por elementos finitos que permite simular la distribución transitoria de presiones y caudales del gas en redes urbanas. Esta formulación, [...]

  • E. Oñate, Á. Gaona, J. Oliver, B. Suarez
    Revista de Obras Públicas (1983). Vol. 130 (3212), pp. 231-248

  • J. Oliver, E. Oñate
    Revista de Obras Públicas (1983). Vol. 130 (3218), pp. 747-763

    Abstract
    La ejecución de emisarios submarinos para saneamiento y la instalación de tuberías para transporte de productos petrolíferos son ejemplos de la [...]

  • E. Oñate, O. Zienkiewicz
    Int. J. Mechanical Sciences (1983). Vol. 25 (5), pp. 305-335

    Abstract
    A finite element method to analyse large plastic deformations of thin sheets of metal is presented. The formulation is based on an extension of the general viscoplastic flow [...]

  • Computers and Structures (1983). Vol. 17 (3), pp. 427-439

    Abstract
    The behaviour of the linear, quadratic and cubic elements of the Mindlin plate strip family for thick and very thin plate analysis is investigated in this paper. Selective [...]

  • Computers and Structures (1983). Vol. 17 (3), pp. 407-426

    Abstract
    In this paper a finite strip formulation which allows to treat bridges, axisymmetric shells or plate structures of constant transverse cross section in an easily and unified [...]

  • J. Oliver, B. Suárez, E. Blanco, E. Oñate
    Acero y Hormigón (1982). Vol. 145, pp. 65-78

  • O. Zienkiewicz, E. Oñate, J. Heinrich
    Int. J. Numer. Meth. Engng. (1981). Vol. 17 (10), pp. 1497-1514

    Abstract
    A finite element formulation to deal with the flow of metals coupled with thermal effects in presented. The deformation process of the metal is treated using the visco‐plastic [...]

  • O. Zienkiewicz, P. Jain, E. Oñate
    Int. J. Solids and Structures (1978). Vol. 14 (1), pp. 15-38

    Abstract
    In the extrusion and forming of solids the plastic (or viscoplastic) deformations are so large that the elastic strain is negligible. The problem thus becomes one of incompressible [...]

  • O. Zienkiewicz, J. Bauer, K. Morgan, E. Oñate
    International Journal for Numerical Methods in Engineering (1977). Vol. 11 (10), pp. 1545-1558

    Abstract
    A two noded, straight element which includes shear deformation effects is presented and shown to be extremely efficient in the analysis of axisymmetric shells. A single point [...]

  • J. Middleton, E. Oñate
    ETSIIT (1977). Vol. 11, pp. 309-325

    Abstract
    Se presenta un esquema de diseño para vasijas de presión metálicas de manera que se minimice la tensión tangencial en la vasija . La geometría [...]

  • Hormigón y Acero (1977). Vol. 124, pp. 53-85

    Abstract
    Se presenta el análisis general de estructuras formadas por un ensamblaje de placas y vigas y con sección transversal constante, mediante una combinación [...]

  • F. López-Almansa, P. Roca, V. Sarrablo, X. Cahís, J. Canet
    Structural Journal (2010). Vol. 107 (3), pp. 355-363

    Abstract
    This paper describes structural tests of thin vaults made of reinforced brick masonry. The experiments consist of concentrated loading tests of 14 full-scale laboratory vaults. [...]

  • R. Miró, F. Pérez, S. Oller, J. Canet, J. González
    Road materials and pavement design (2008). Vol. 9 (4), pp. 711-730

    Abstract
    Experimental techniques usually employed in the characterization of conventional mixes are not able to clearly describe some specific properties of the recycled mixes, which [...]

  • P. Roca, F. López-Almansa, J. Canet, A. Hanganu
    Engineering Structures (2007). Vol. 23 (3), pp. 431-439

    Abstract
    Reinforced brick masonry has experienced only scarce use as a fully structural material due to, among other reasons, the lack of design criteria and calculation tools [...]

  • J. González, J. Canet, S. Oller, R. Miró
    Computational Materials Science (2007). Vol. 38 (4), pp. 543-560

    Abstract
    The study and development of recycling techniques for pavements is an increasing activity in engineering nowadays. This research line demands a more realistic characterization [...]

  • S. Oller, J. Canet, F. Zalamea
    Journal of Engineering Mechanics (2005). Vol. 131 (1), pp. 65-79

    Abstract
    In this paper, we present a two-scale numerical method in which structures made up of composite materials are simulated. The method proposed lies within the context of homogenization [...]

  • J. Forment, J. Canet, A. Aparicio
    Hormigón y Acero (2000). Vol. 51 (217), pp. 81-100

    Abstract
    The earthquakes have always represented on of the most dread destructive phenomena, for they affect the last stability of the structures. The modern societies are not prepared [...]

  • P. Arnau, N. Navarro, J. Soraluce, J. Martínez-Iglesias, J. Illas, E. Oñate
    Water (2019). Vol. 11 (11), 16 pp.

    Abstract
    Cool steam is an innovative distillation technology based on low-temperature thermal distillation (LTTD), which allows obtaining fresh water from non-safe water sources with [...]

  • H. Garikapati, S. Zlotnik, C. Verhoosel, E. Brummelen, P. Diez
    Computational Mechanics (2019). (Preprint) pp. 1-23

    Abstract
    Understanding the failure of brittle heterogeneous materials is essential in many applications. Heterogeneities in material properties are frequently modeled through random [...]

  • Comput. Methods Appl. Mech. Engrg., (2019). (Preprint) Vol. 120, pp. 391-432

    Abstract
    The paper presents a novel strategy providing fully computable upper bounds for the energy norm of the error in the context of three‐dimensional linear finite element approximations [...]

  • H. Garikapati, C. Verhoosel, E. Brummelen, S. Zlotnik, P. Diez
    Computational Geosciences (2019). (Preprint) Vol. 23 (1), pp. 81-105

    Abstract
    Hydraulic fracturing processes are surrounded by uncertainty, as available data is typically scant. In this work, we present a sampling-based stochastic analysis of the hydraulic [...]

  • R. García-Blanco, P. Diez, D. Borzacchiello, F. Chinesta
    Archives of Comp. Meths. Engng. (2018). (Preprint) Vol. 25 (4), pp. 1003-1026

    Abstract
    The power flow model performs the analysis of electric distribution and transmission systems. With this statement at hand, in this work we present a summary of those solvers [...]

  • P. Diez, S. Zlotnik, A. García-González, A. Huerta
    Comptes Rendus Mécanique (2018). (Preprint) Vol. 346 (7), pp. 501-514

    Abstract
    Proper Generalized Decomposition (PGD) is devised as a computational method to solve high-dimensional boundary value problems (where many dimensions are associated [...]

  • D. Dorribo, L. Greve, P. Diez, I. Arias, X. Larráyoz-Izcara
    Theoretical and Applied Fracture Mechanics (2018). (Preprint) Vol. 96, pp. 497-508

    Abstract
    Predicting the bearing capacity of resistance spot welds (RSW) during vehicle crash tests has become a crucial task for the automotive industry, since the recent introduction [...]

  • X. Zou, M. Conti, P. Diez, F. Auricchio
    Int. J. Numer. Meth. Engng. (2018). (Preprint) Vol. 113 (2), pp. 230-251

    Abstract
    Proper generalized decomposition (PGD) is often used for multi-query and fast-response simulations. It is a powerful tool alleviating the curse of dimensionality affecting [...]

  • A. Sibileau, A. García-González, F. Auricchio, S. Morganti, P. Diez
    Computational Mechanics (2018). (Preprint) Vol. 62 (4), pp. 871-891

    Abstract
    Architectured materials (or metamaterials) are constituted by a unit-cell with a complex structural design repeated periodically forming a bulk material with emergent mechanical [...]

  • B. Oliveira, J. Afonso, S. Zlotnik, P. Diez
    Geophysical Journal International (2018). (Preprint) Vol. 212 (1), pp. 345-388

    Abstract
    We present a conceptual and numerical approach to model processes in the Earth’s interior that involve multiple phases that simultaneously interact thermally, mechanically [...]

  • A. Franci, I. de-Pouplana, G. Casas, M. Celigueta, J. González-Usúa, E. Oñate
    Comp. Part. Mech (2019). pp. 1-20

    Abstract
    This work proposes a fully Lagrangian formulation for the numerical modeling of free-surface particle-laden flows. The fluid phase is solved using the particle finite element [...]

  • J. Baiges, R. Codina, I. Castañar, E. Castillo
    Comput. Methods Appl. Mech. Engrg., (2019). (prepint) pp. 1-14

    Abstract
    In this work a reduced order model based on adaptive finite element meshes and a correction term obtained by using an artificial neural network (FAN-ROM) is presented. The [...]

  • O. Jou Devesa, M. Celigueta, S. Latorre, F. Arrufat, E. Oñate
    Computational Particle Mechanics (2019). Vol. 6 (4), pp 739–765

    Abstract
    This work investigates the failure patterns of ice cakes and floe-icewhen loaded by amoving and sloping structure (ice-breaking ships and cones). In the paper, we introduce [...]

  • Ö. Türk, R. Codina
    Applied Numerical Mathematics (2019). (preprint) Vol. 145, pp. 188-200

    Abstract
    Numerical solution strategies for the Stokes eigenvalue problem based on the use of penalty formulations are investigated in this study. It is shown that the penalty method [...]

  • L. Moreno García, R. Codina, J. Baiges, E. Castillo
    Comput. Methods Appl. Mech. Engrg., (2019). Vol. 354, pp. 706-731

    Abstract
    The log-conformation reformulation, originally proposed by Fattal and Kupferman (2004), allows computing incompressible viscoelastic problems with high Weissenberg numbers [...]

  • E. Castillo, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2019). Vol. 349, pp. 701-721

    Abstract
    In this paper, we propose and analyze the stability and the dissipative structure of a new dynamic term-by-term stabilized finite element formulation for [...]

  • G. Barrenechea, E. Castillo, R. Codina
    Journal of Numerical Analysis (2019). Vol. 39 (2), pp. 792-819

    Abstract
    In this article we analyse a stabilized finite element formulation recently proposed to approximate viscoelastic fluid flows. The formulation has shown to have accuracy and [...]

  • C. Bayona, J. Baiges, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2019). Vol. 344, pp. 1073-1103

    Abstract
    In this work we solve the compressible Navier–Stokes equations written in primitive variables in order to simulate low Mach number aeroacoustic [...]

  • A. Pont, O. Guasch, J. Baiges, R. Codina, A. Hirtum
    Int. J. Numer. Meth. Biomed. Engng (2019). Vol. 35 (1), e3153

    Abstract
    A sibilant fricative /s/ is generated when the turbulent jet in the narrow channel between the tongue blade and the hard palate is deflected downwards through the space between [...]

  • S. Komala, R. Codina
    Int. J. Numer. Meth. Heat and Fluid Flows (2018). Vol. 28 (11), pp. 2688-2715

    Abstract
    Purpose This paper aims to present a finite element formulation to approximate systems of reaction–diffusion–advection equations, focusing on cases with nonlinear [...]

  • A. Aguirre, E. Castillo, M. Cruchaga, R. Codina, J. Baiges
    Journal of Non-Newtonian Fluid Mechanics (2018). Vol. 257, pp. 22-43

    Abstract
    In this work, a variational multiscale finite element formulation is used to approximate numerically the lid-driven cavity flow problem for high Reynolds numbers. For Newtonian [...]

  • Sociedad Española de Matemática Aplicada (2018). Vol. 75 (4), pp. 591-606

    Abstract
    This work analyzes some aspects of the hp convergence of stabilized finite element methods for the convection-diffusion equation when diffusion is small. The methods [...]

  • C. Bayona, R. Codina, J. Baiges
    Comput. Methods Appl. Mech. Engrg., (2018). Vol. 337, pp. 501-526

    Abstract
    This article investigates an explicit a-posteriori error estimator for the finite element approximation of the compressible Navier–Stokes equations. [...]

  • A. Pont, R. Codina, J. Baiges, O. Guasch
    Journal of Computational Physics (2018). Vol. 363, pp. 11-29

    Abstract
    The high computational cost of solving numerically the fully compressible Navier–Stokes equations, together with the poor performance of most numerical formulations [...]

  • Q. Schmid, Y. Mesri, E. Hachem, R. Codina
    Comput. Methods Appl. Mech. Engrg., (2018). Vol. 335, pp. 69-90

    Abstract
    In this work, we present a computational approach for the numerical simulation of thermal radiation. Radiation is modeled by solving a set of two coupled partial [...]

  • C. Bayona, J. Baiges, R. Codina
    Int. J. Numer. Meth. Fluids (2018). Vol. 86 (5), pp. 313-328

    Abstract
    A numerical approximation for the one‐dimensional Burgers equation is proposed by means of the orthogonal subgrid scales–variational multiscale (OSGS‐VMS) method. [...]

  • Comp. Part. Mech. (2019).

    Abstract
    Changes in direction and cross section in supercritical hydraulic channels generate shockwaves which result in an increase in flow depth with regard to that for uniform regime. [...]

  • F. Ahmad, S. Ullah, N. Merican, E. Oñate, A. Al-Sehemi, G. Yeoh
    Construction and Building Material (2019). Vol. 228, 116734

    Abstract
    This research emphases on the synthesis of new formulations of intumescent coating with improved thermal performance for steel structures. The coating formulations were based [...]

  • Metals (2019). Vol. 9 (5), pp. 573

    Abstract
    The computational modeling and numerical simulation of Friction Stir Welding (FSW) processes is an extremely challenging task due to the highly nonlinear and coupled nature [...]

  • M. Celigueta, S. Latorre, F. Arrufat, E. Oñate
    Computational Particle Mechanics (2019). (prepint), 10.1007/s40571-019-00278-5

    Abstract
    We present a numerical procedure for elastic and non linear analysis (including fracture situations) of solid materials and structures using the Discrete Element Method (DEM). [...]

  • R. Flores, R. Ortega, A. Ilin, D. Simpkins, E. Oñate
    Computational Particle Mechanics (2019). Vol. 6 (2), pp 163–175

    Abstract
    We present a simulation tool for transient events in complex hydraulic networks. The code includes modelling of the transport of suspended cuttings in near-vertical wells. [...]

  • Computational Particle Mechanics (2019). Vol. 6 (4), pp 545–559

    Abstract
    The discrete element method (DEM) is an emerging tool for the calculation of the behaviour of bulk materials. One of the key features of this method is the explicit integration [...]

  • X. Zhang, E. Oñate, S. Galindo, J. Bleyer, K. Krabbenhoft
    Comput. Methods Appl. Mech. Engrg., (2019). Vol. 343, pp. 314-338

    Abstract
    Consequences of submarine landslides include both their direct impact on offshore infrastructure, such as subsea electric cables and gas/oil pipelines, [...]

  • I. Pérez, M. Farias, M. Castro, R. Roselló, C. Morfa, L. Medina, E. Oñate
    Int J Numer Methods Eng. (2019). Vol. 118 (3), pp. 121-131

    Abstract
    A novel algorithm to reproduce the arrangement of grains in polycrystalline materials was recently published by the authors. In this original approach, a dense package of [...]

  • C. Recarey, I. Pérez, R. Roselló, M. Muniz, E. Hernández, R. Giraldo, E. Oñate
    Computer Methods in Applied Mechanics and Engineering (2019). Vol. 345, pp. 336-362

    Abstract
    Several theoretical contributions in order to establish a particle packing methodology are presented. In this respect, a generic formulation of a new method for packing [...]

  • X. Lu, X. Lin, M. Chiumenti, M. Cervera, Y. Hu, X. Ji, L. Ma, H. Yang, W. Huang
    Additive Manufacturing (2019). (preprint) Vol. 26, pp. 166-179

    Abstract
    Residual stresses and distortion in Additive Manufactured (AM) parts are two key obstacles which seriously hinder the wide application of this technology. Nowadays, understanding [...]

  • X. Lu, X. Lin, M. Chiumenti, M. Cervera, Y. Hu, X. Ji, L. Ma, W. Huang
    Int. J. Mechanical Sciences (2019). (preprint) Vol. 153-154, pp. 119-130

    Abstract
    Residual stresses and distortions are two technical obstacles for popularizing the additive manufacturing (AM) technology. The evolution of the stresses in AM components during [...]

  • G. Vlachakis, M. Cervera, G. Barbat, S. Salaustros
    Engineering Failure Analysis (2019). (preprint) Vol. 97, pp. 534-555

    Abstract
    The out-of-plane response is a complex and at the same time key aspect of the seismic vulnerability of masonry structures. It depends on several factors, some of which are [...]

  • N. Dialami, M. Cervera, M. Chiumenti
    Metals (2019). Vol. 9 (1), pp. 28-45

    Abstract
    This work studies the effect of the tool tilt angle on the generated heat and the material flow in the work pieces joint by Friction Stir Welding (FSW). An apropos kinematic [...]

  • N. Dialami, M. Cervera, M. Chiumenti, A. Segatori
    Int. J. Mechanical Sciences (2019). Vol. 151, pp. 61-69

    Abstract
    This work studies computationally and experimentally the joint line remnant defects emerging in friction stir welding (FSW) due to oxide layer propagation into the weld. A [...]

  • S. Salaustros, M. Cervera, L. Pelà
    Archives of Comp. Meths. Engng. (2018). (preprint) Published online, pp. 1-45

    Abstract
    The importance of crack propagation in the structural behaviour of concrete and masonry structures has led to the development of a wide range of finite element methods for [...]

  • E. Salsi, M. Chiumenti, M. Cervera
    Metals (2018). Vol. 8 (8), pp. 633-657

    Abstract
    AM processes are characterized by complex thermal cycles that have a deep influence on the microstructural transformations of the deposited alloy. In this work, a general [...]

  • J. González, M. Chiumenti, M. Cervera, C. Agelet de Saracibar, F. Samaniego, I. Cobo
    Fusion Engineering and Design (2018). (preprint) Vol. 135, Part A, pp. 65-73

    Abstract
    The objective of ITER is to build a new Tokamak, with the goal of demonstrating the scientific and technical feasibility of fusion power. The First Wall Panels are the inner [...]

  • G. Casas, A. Ferrer, E. Oñate
    Journal of Computational Physics (2018). Vol. 352, pp. 142-171

    Abstract
    In this work we put the method proposed by van Hinsberg et al. to the test, highlighting its accuracy and efficiency in a sequence of benchmarks of increasing complexity. [...]

  • European Journal of Computational Mechanics (2018). Vol. 27 (1), pp. 1-32

    Abstract
    The solid-shells are an attractive kind of element for the simulation of f orming processes, due to the fact that any kind of generic 3D constitutive law can be employed without [...]

  • Computers and Geotechnics (2018). Vol. 96, pp. 103-117

    Abstract
    A new computational technique for the simulation of 2D and 3D fracture propagation processes in saturated porous media is presented. A non-local damage model [...]

  • M. Chiumenti, M. Cervera, E. Salsi, A. Zonato
    J. of Heat Transfer (2018). (preprint) Vol. 140 (8), pp. 12

    Abstract
    In this work, a novel phenomenological model is proposed to study the liquid-to-solid phase change of eutectic and hypoeutectic alloy compositions. The objective is to enhance [...]

  • N. Dialami, M. Cervera, M. Chiumenti
    Metals (2018). (preprint) Vol. 8 (3), pp. 183

    Abstract
    This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination [...]

  • X. Lu, X. Lin, M. Chiumenti, M. Cervera, J. Li, L. Ma, L. Wei, Y. Hu, W. Huang
    Additive Manufacturing (2018). (preprint) Vol. 21, pp. 30-40

    Abstract
    A three-dimensional (3D) thermomechanical coupled model for Laser Solid Forming (LSF) of Ti-6Al-4V alloy has been calibrated through experiments of 40-layers metal [...]

  • G. Barbat, M. Cervera, M. Chiumenti
    International Journal of Fracture (2018). (preprint) Vol. 210 (1-2), pp. 45–79

    Abstract
    This paper discusses the modeling of cracking in quasi-brittle materials using isotropic and orthotropic damage constitutive laws. A mixed strain/displacement finite element [...]

  • J. Wu, M. Cervera
    Int. J. Solids and Structures (2018). (preprint) Vol. 139–140, pp. 250–269

    Abstract
    The asymmetric tensile/compressive material behavior and microcracks closure-reopening (MCR) effects exhibited by quasi-brittle solids are of significant [...]

  • Fire Technology (2018). Vol. 54 (6), pp. 1783–1805

    Abstract
    The tendency of the polymers to melt and drip when they are exposed to external heat source play a very important role in the ignition and the spread of fire. Numerical simulation [...]

  • C. R. Mecanique (2018). Vol. 346 (7), pp. 539-555

    Abstract
    Highly concentrated moving nonlinearities are extremely difficult to solve numerically. The Selective Laser Melting Additive Manufacturing process [...]

  • Adv. Model. and Simul. in Eng. Sci. (2018). Vol. 5, art. 28

    Abstract
    In this paper we present a collection of techniques used to formulate a projection-based reduced order model (ROM) for zero Mach limit thermally coupled Navier–Stokes [...]

  • J. Gimenez, H. Aguerre, S. Idelsohn, N. Nigro
    Journal of Computational Physics (2018). Vol. 380, pp. 295-310

    Abstract
      This work presents a novel proposal of a second-order accurate (in time and space) particle-based method for solving transport equations including incompressible [...]

  • S. Idelsohn, J. Gimenez, N. Nigro
    Int. J. Numer. Meth. Fluids (2018). Vol. 86 (12), pp. 750–769

    Abstract
    In a previous paper, the authors presented an elemental enriched space to be used in a finite‐element framework (EFEM) capable of reproducing kinks and jumps in an unknown [...]

  • Hormigón y Acero (2018). (prepint) 69, Supl 1, pp. 53-69

    Abstract
    This paper presents the basic concepts and application of the strategy that combines finite element methods (FEM) and discrete elements (DEM)for the study of the propagation [...]

  • F. Zarate, J. Gonzalez, J. Miquel, R. Lohner, E. Oñate
    Underground Space (2018). Vol. 3 (4), pp. 310-316, (prepint)

    Abstract
    We present recent developments in the coupling of the finite element method (FEM) and the discrete element method (DEM) for analysis of rock blasting operations in tunnels. [...]

  • Comp. Part. Mech (2018). (prepint) Vol. 5 (3), pp. 355-373

    Abstract
    In this paper we analyze the capabilities of two numerical techniques based on DEM and FEM-DEM approaches for the simulation of fracture in shale rock caused by a pulse of [...]

  • Comp. Part. Mech (2018). (prepint) Vol. 5 (3) , pp. 411-420

    Abstract
    This paper extends to three dimensions (3D) the computational technique developed by the authors in 2D for predicting the onset and evolution of fracture in a finite element [...]

  • R. Löhner, E. Haug, C. Zinggerling, E. Oñate
    Comp. Part. Mech (2018). Vol. 5 (1), pp. 71-86

    Abstract
    A methodology to integrate geographical information system (GIS) data with large-scale pedestrian simulations has been developed. Advances in automatic data acquisition and [...]

  • C. Recarey Morfa, M. Farias, I. Pérez, E. Oñate
    Comp. Part. Mech (2018). Vol. 5 (2), pp. 213-226

    Abstract
    The influence of the microstructural heterogeneities is an important topic in the study of materials. In the context of computational mechanics, it is therefore necessary [...]

  • C. Recarey Morfa, L. Cortés, M. Farias, I. Pérez, R. Valera, E. Oñate
    Comp. Part. Mech (2018). Vol. 5 (3), pp. 319-334

    Abstract
    A methodology that comprises several characterization properties for particle packings is proposed in this paper. The methodology takes into account factors such as dimension [...]

  • C. Recarey Morfa, I. Pérez, M. Farías, E. Oñate, R. Valera, H. Casañas
    Comp. Part. Mech (2018). Vol. 5, pp 13–33

    Abstract
    A generic formulation of a new method for packing particles is presented. It is based on a constructive advancing front method, and uses Monte Carlo techniques for the generation [...]

  • Computational Mechanics (2019). Vol. 63 (6), pp. 1243–1260

    Abstract
    In this work a stabilized mixed formulation for the solution of non-linear solid mechanics problems in nearly-incompressible conditions is presented. In order to deal with [...]

  • X. Zhang, E. Oñate, S. Galindo, J. Bleyer
    Comput. Methods Appl. Mech. Engrg., (2018). (prepint) Vol. 343, pp. 314-338

    Abstract
    Consequences of submarine landslides include both their direct impact on offshore infrastructure, such as subsea electric cables and gas/oil pipelines, and their indirect [...]

  • A. Franci, X. Zhang
    Papers Repository of the International Centre for Numerical Methods in Engineering (CIMNE) (2019). 12

    Abstract
    This paper presents a purely Lagrangian approach for the 3D simulation of Bingham free-surface uids and their interaction with deformable solid structures. In the proposed [...]

  • X. Zhang, S. Sloan, E. Oñate
    Int. Journal for Numerical and Analytical Methods in Geomechanics (2018). Vol. 42, pp. 1806-1822 (preprint)

    Abstract
    This paper presents a detailed numerical study of the retrogressive failure of landslides in sensitive clays. The dynamic modelling of the landslides is carried out [...]

  • Papers Repository of the International Centre for Numerical Methods in Engineering (CIMNE) (2018). 7

    Abstract
    Variations of horizontal and vertical velocities of retrogressive landslides

  • Papers Repository of the International Centre for Numerical Methods in Engineering (CIMNE) (2018). 6

    Abstract
    Properties of Norwegian clays, Canadian clays and offshore clays

  • X. Zhang, D. Sloan
    15th IACMAG (2017). paper no 868

    Abstract
    In this paper, the slope failure in sensitive clays is studied numerically using the particle finite element method which is a novel approach capable of tackling extreme deformation [...]

  • Ships and offshore structures (2018). 14:2, 153-164 (preprint)

    Abstract
    In this work a finite element method (FEM) is proposed to solve the problem of estimating the added resistance of a ship in waves in the time domain and using unstructured [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 326, pp. 422-445

    Abstract
    In this paper we propose a Finite Element model for analyzing closed membranes (“bags”) interacting with internal and external (surrounding) fluids. The approach [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 325, pp. 711-732

    Abstract
    The aim of this paper is to present a Lagrangian formulation for thermo-coupled fluid–structure interaction (FSI) problems and to show its applicability [...]

  • J. Cotela-Dalmau, R. Rossi, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2017). (preprint) Vol. 315, pp. 607-631

    Abstract
    We present a new stabilized finite element (FEM) formulation for incompressible flows based on the Finite Increment Calculus (FIC) framework (Oñate, [...]

  • P. Diez, S. Zlotnik, A. Huerta
    Comput. Methods Appl. Mech. Engrg. (2017). (Preprint) Vol. 326, pp. 223-240

    Abstract
    Design optimization and uncertainty quantification, among other applications of industrial interest, require fast or multiple queries of some parametric model. The Proper [...]

  • R. Hospital-Bravo, J. Sarrate, P. Diez
    Comput. Methods Appl. Mech. Engrg., (2017). (Preprint) Vol. 111 (8), pp. 703-723

    Abstract
    This paper details a semi‐analytical procedure to efficiently integrate the product of a smooth function and a complex exponential over tetrahedral elements. These highly [...]

  • R. García-Blanco, D. Borzacchiello, F. Chinesta, P. Diez
    Int. J. Numer. Meth. Engng. (2017). Vol. 111 (6), pp. 529-552

    Abstract
    The parametric analysis of electric grids requires carrying out a large number of Power Flow computations. The different parameters describe loading conditions and grid properties. [...]

  • K. Serafin, B. Magnain, E. Florentin, N. Parés, P. Diez
    Int. J. Numer. Meth. Engng. (2017). (Preprint) Vol. 110 (5), pp. 440-466

    Abstract
    This work focuses on providing accurate low-cost approximations of stochastic finite elements simulations in the framework of linear elasticity. In [E. Florentin, P. Diez, [...]

  • M. Signorini, S. Zlotnik, P. Diez
    Int. J. Numer. Meth. Engng. (2017). (Preprint) Vol. 109, (8), pp. 1085-1102

    Abstract
    The identification of the geological structure from seismic data is formulated as an inverse problem. The properties and the shape of the rock formations in the subsoil are [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). (Preprint) Vol. 313 (1), pp. 785-816

    Abstract
    This paper presents a new methodology to compute guaranteed upper bounds for the energy norm of the error in the context of linear finite element approximations of the reaction-diffusion [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 325, pp. 37-55

    Abstract
    In this work we present a general error estimator for the finite element solution of solid mechanics problems based on the Variational Multiscale method. [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 110 (13), pp. 1203-1226

    Abstract
    The need for remeshing when computing flow problems in domains suffering large deformations has motivated the implementation of a tool that allows the proper transmission [...]

  • E. Castillo, R. Codina
    Mathematical Models and Methods in Applied Sciences (2017). Vol. 51 (4), pp. 1407-1427

    Abstract
    In this paper we present the numerical analysis of a three-field stabilized finite element formulation recently proposed to approximate viscoelastic flows. The three-field [...]

  • J. Baiges, R. Codina, A. Pont, E. Castillo
    Comput. Methods Appl. Mech. Engrg., (2017). Vol. 313, pp. 159-188

    Abstract
    In this work we present a Fixed-Mesh ALE method for the numerical simulation of free surface flows capable of using an adaptive finite element mesh covering a background [...]

  • E. Castillo, R. Codina
    Computers & Fluids (2017). Vol. 142, pp. 72-78

    Abstract
    In this paper, a three-field finite element stabilized formulation for the incompressible viscoelastic fluid flow problem is tested numerically. Starting from a residual based [...]

  • Int. J. Numer. Meth. Engng. (2017). (preprint) Vol. 113 (6), pp. 910-937

    Abstract
    In this paper, conserving time‐stepping algorithms for frictionless and full stick friction dynamic contact problems are presented. Time integration algorithms for frictionless [...]

  • F. Zarate, J. Gonzalez, J. Miquel, R. Lohner, E. Oñate
    Underground Space (2018). Vol. 3 (3), pp. 310-316

    Abstract
    We present recent developments in the coupling of the finite element method (FEM) and the discrete element method (DEM) for analysis of rock blasting operations in tunnels. [...]

  • Structural Control Health Monitoring (2017). Vol. 24 (11), Article Number: e2012

    Abstract
    The advances in information and communication technologies led to a general trend towards the availability of more detailed information on dam behaviour. This allows applying [...]

  • C. Labra, J. Rojek, E. Oñate
    Rock Mechanics and Rock Engineering (2017). Vol. 50 (3), pp. 621-638

    Abstract
    This paper presents advanced computer simulation of rock cutting process typical for excavation works in civil engineering. Theoretical formulation of the hybrid discrete/finite [...]

  • Procedia Engineering (2017). Vol. 175, pp. 226-232

    Abstract
    The main objective of this work lies in the development of a variational implicit Material Point Method (MPM), implemented in the open source Kratos Multiphysics framework. [...]

  • Int. J. Numer. Anal. Meth. Geomech. (2017). Vol. 41 (1), pp. 110-134

    Abstract
    A new mixed displacement‐pressure element for solving solid–pore fluid interaction problems is presented. In the resulting coupled system of equations, the balance [...]

  • Computers and Geotechnics (2017). Vol. 85, pp. 220-229

    Abstract
    The Discrete Element Method (DEM) was found to be an effective numerical method for the calculation of engineering problems involving granular materials. [...]