• Int. J. of Num. Meths. in Fluid (1997). Vol. 25, pp. 1387-1407;

    Abstract
    In a previous paper a general procedure for deriving stabilized finite element schemes for advective type problems based on invoking higher order balance laws over finite [...]

  • Numerical Methods in Fluids (2014). Vol. 74 pp. 699-731 Vol. 74 pp. 699-731 (preprint)

    Abstract
    We present a Lagrangian formulation for finite element analysis of quasi-incompressible fluids that has excellent mass preservation features. The success of the formulation [...]

  • M. Celigueta, S. Latorre, F. Arrufat, E. Oñate
    Computational Mechanics (2017). (prepint) Vol. 60 (6), pp. 997-1010

    Abstract
    The Discrete Element Method (DEM) has been used for modeling continua, like concrete or rocks. However, it requires a big calibration effort, even to capture just the linear [...]

  • E. Oñate, P. Nadukandi, J. Miquel
    Comput. Methods Appl. Mech. Engrg., (2017). Vol. 327, pp. 352-368

    Abstract
    In this paper we present an accurate stabilized FIC-FEM formulation for the multidimensional steady-state advection-diffusion-absorption equation. The stabilized formulation [...]

  • S. Idelsohn, E. Oñate, P. Becker
    Eugenio Oñate's Journal Papers (2017). Vol. 3

    Abstract
    Particle methods in Computational Fluid Dynamics (CFD) are numerical tools for the solution of the equations of f luid dynamics obtained by replacing the fluuid continuum [...]

  • Adv. Model. and Simul. in Eng. Sci (2016). Vol. 3 pp. 14 Vol. 3 (14)

    Abstract
    In this paper we present an overview of the possibilities of the finite increment calculus (FIC) approach for deriving computational methods in mechanics with improved numerical [...]

  • Comput. Methods Appl. Mech. Engrg., (2016). Vol. 107(11) pp. 970-990 (preprint) Vol. 298, pp. 520-547

    Abstract
    We present a Lagrangian monolithic strategy for solving fluid-structure interaction (FSI) problems. The formulation is called Unified because fluids and solids are solved [...]

  • M. Celigueta, K. Deshpande, S. Latorre, E. Oñate
    Comp. Part. Mech (2016). Vol. 3(2) pp. 263-276 Vol. 30 (2), pp. 263-276

    Abstract
    We present a procedure for coupling the finite element method (FEM) and the discrete element method (DEM) for analysis of the motion of particles in non-Newtonian fluids. [...]

  • Comput. Methods Appl. Mech. Engrg., (2016). Vol. 298() pp. 373-406 Vol. 298, pp. 373-406

    Abstract
    In this paper we present an accurate stabilized FIC-FEM formulation for the 1D advection-diffusion-reaction equation in the exponential and propagation regimes using two stabilization [...]

  • P. Ubach, F. Arrufat, L. Ring, R. Gandikota, F. Zárate, E. Oñate
    Comp. Part. Mech (2016). Vol. 3(1) pp. 39-4 (prepint) Vol. 3(1), pp 29–41

    Abstract
    The authors present results on the use of the discrete element method (DEM) for the simulation of drilling processes typical in the oil and gas exploration industry. The numerical [...]

  • F. Zárate, E. Oñate
    Comp. Part. Mech (2015). Vol. 2(3) pp. 301-314 (prepint) Vol. 2 (3), pp. 301-314

    Abstract
    This paper presents a new computational technique for predicting the onset and evolution of fracture in a continuum in a simple manner combining the finite element method [...]

  • M. Kouhi, E. Oñate, D. Mavriplis
    Eugenio Oñate's Journal Papers (2015). Vol. 46 pp. 422-435

    Abstract
    In this paper, an adjoint-based error estimation and mesh adaptation framework is developed for the compressible inviscid flows. The algorithm employs the Finite Calculus [...]

  • A. Franci, E. Oñate, J. Carbonell
    Int. J. Numer. Meth. Engng. (2015). Vol. 102(3-4) pp. 257-277 Vol. 102 (3-4), pp. 257-277

    Abstract
    The purpose of this paper is to study the effect of the bulk modulus in the iterative matrix for the analysis of quasi-incompressible free surface fluid flows using a mixed [...]

  • M. Kouhi, E. Oñate
    Eugenio Oñate's Journal Papers (2015). Vol. 56(1) pp. 113-129

    Abstract
    A new implicit stabilized formulation for the numerical solution of the compressible NavierStokes equations is presented. The method is based on the Finite Calculus (FIC) [...]

  • E. Oñate, F. Zárate, J. Miquel, M. Santasusana, M. Celigueta, F. Arrufat, R. Gandikota, K. Valiullin, L. Ring
    Eugenio Oñate's Journal Papers (2015). Vol. 2(2) pp. 139-160

    Abstract
    This paper presents a local constitutive model for modelling the linear and non linear behavior of soft and hard cohesive materials with the discrete element method (DEM). [...]

  • E. Oñate, M. Celigueta, S. Latorre, G. Casas, R. Rossi, J. Rojek
    Comp. Part. Mech (2014). Vol. 1 pp. 85-102 (prepint) Vol. 1 pp. 85-102

    Abstract
    We present a Lagrangian numerical technique for the analysis of flows incorporating physical particles of different sizes. The numerical approach is based on the Particle [...]

  • Computational Mechanics (2014). Vol. 54 pp. 85-107 Vol. 54(1), pp. 85-107

    Abstract
    We present a generalized Lagrangian formulation for analysis of industrial forming processes involving thermally coupled interactions between deformable continua. The governing [...]

  • R. Flores, E. Ortega, E. Oñate
    Engineering Computations (2014). Vol. 31(5) pp. 957-985 Vol. 31 (5), pp. 957-985

    Abstract
    This work describes a set of simple yet effective, numerical method for the design and evaluation of parachute-payload system. The developments include a coupled fluidstructural [...]

  • M. Kouhi, E. Oñate
    Int. J. Numer. Meth. Engng. (2014). Vol. 74(2) pp. 872-897 Vol. 74 (2), pp. 872-897

    Abstract
    This paper aims at the development of a new stabilization formulation based on the Finite Calculus (FIC) scheme for solving the Euler equations using the Galerkin finite element [...]

  • Comp. Meth. App. Mech. Eng. (2015). 295, 290-304 (preprint)

    Abstract
    This paper shows the recent work of the authors in the development of a time-domain FEM model for evaluation of the seal dynamics of a surface effect ship. The fluid solver [...]

  • S. Idelsohn, E. Oñate, N. Nigro, P. Becker
    Comput. Methods Appl. Mech. Engrg., (2015). Vol. 293, pp. 191–206; (preprint)

    Abstract
    The possibility to use a Lagrangian frame to solve problems with large time-steps was successfully explored previously by the authors for the solution of homogeneous incompressible [...]

  • 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 [...]

  • M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    Int. J. Numer. Meth. Fluids (2010). Vol. 67 (11), pp. 1516-1539

    Abstract
    In this work we extend the Particle Finite Element Method (PFEM) to multi-fluid flow problems with the aim of exploiting the fact that Lagrangian methods are specially well [...]

  • Comput. Methods Appl. Mech. Engrg., (2008). Vol. 197 (19-20), pp. 1777–1800

    Abstract
    We present some advances in the formulation of the Particle Finite Element Method (PFEM) for solving complex fluid-structure interaction problems with free surface waves. [...]

  • Int. J. Numer. Meth. Engng. (2011). Vol. 86 (1), pp. 18-46

    Abstract
    We propose a fourth‐order compact scheme on structured meshes for the Helmholtz equation given by R(φ):=f(x)+Δφ+ξ2φ=0. The scheme consists of taking [...]

  • J. Giménez, N. Nigro, S. Idelsohn, E. Oñate
    Computers and Fluids (2016). (prepint) Vol. 141, pp. 90-104

    Abstract
    In previous works [1,2], the authors have presented a highly efficient extension of the Particle Finite Element Method, called PFEM-2, to solve two-phase flows. The methodology [...]

  • F. Kempel, B. Schartel, J. Marti, K. Butler, R. Rossi, S. Idelsohn, E. Oñate
    Fire and Materials (2015). Vol. 39 (6), pp. 570-584

    Abstract
    An experimental and numerical investigation of the effect of bisphenol A bis(diphenyl phosphate) (BDP) and polytetrafluoroethylene (PTFE) on the fire behaviour of bisphenol [...]

  • Revista de Obras Públicas (2002). Vol. 149 (3418), pp. 7-15

    Abstract
    This paper presents some thoughts about the evolution of numerical methods and the difficulties posed by their applications to solve real problems of everyday´s engineering. [...]

  • E. Oñate
    Revista de Obras Públicas (2004). Vol. 151 (3449), pp. 41-48

    Abstract
    El artículo revindica el valor de los métodos de cálculo que se enseñan en las Escuelas de Ingeniería, como herramientas indispensables [...]

  • E. Oñate, A. Eijo, S. Oller
    Comput. Methods Appl. Mech. Engrg., (2012). Vol. 213–216, pp. 362–382

    Abstract
    In this work we present a new simple linear two-noded beam element adequate for the analysis of composite laminated and sandwich beams based on the combination of classical [...]

  • S. Idelsohn, J. Marti, A. Limache, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2008). Vol. 197, pp. 1762–1776

    Abstract
    We present a general Lagrangian formulation for treating elastic solids and quasi/fully incompressible fluids in a unified form. The formulation allows to treat solid and [...]

  • Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 339-362

    Abstract
    A methodology for error estimation and mesh adaptation for finite element (FE) analysis of incompressible viscous flow is presented. The error estimation method is based on [...]

  • P. Becker, S. Idelsohn, E. Oñate
    Computational Mechanics (2015). (preprint) Vol. 55, pp. 1091–1104

    Abstract
    This paper describes a strategy to solve multi-fluid and Fluid-Structure Interaction (FSI) problems using Lagrangian particles combined with a fixed Finite Element (FE) mesh [...]

  • E. Oñate, F. Zárate
    Int. J. Numer. Meth. Engng. (2010). Vol. 83 (2), pp.196-227

    Abstract
    The paper describes a methodology for extending rotation-free plate and beam elements in order to accounting for transverse shear deformation effects. The ingredients for [...]

  • S. Idelsohn, E. Oñate, F. Pin, N. Calvo
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195 (17-18), pp. 2100-2123

    Abstract
    In the present work a new approach to solve fluid-structure interaction problems is described. Both, the equations of motion for fluids and for solids have been approximated [...]

  • F. Flores, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2005). Vol. 194, pp. 907-932

    Abstract
    In this paper an assumed strain approach is presented in order to improve the membrane behaviour of a thin shell triangular element. The so called Basic Shell Triangle (BST) [...]

  • E. Oñate, J. García-Espinosa, S. Idelsohn, F. Pin
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195 (23-24), pp. 3001-3037

    Abstract
    We present a general formulation for incompressible fluid flow analysis using the finite element method (FEM). The standard Eulerian formulation is described first. The necessary [...]

  • Int. J. Numer. Meth. Engng. (2008). Vol 76 (9), pp. 1297-1327

    Abstract
    This paper introduces a new stabilized finite element method based on the finite calculus (Comput. Methods Appl. Mech. Eng. 1998; 151:233–267) and arbitrary [...]

  • S. Idelsohn, N. Calvo, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2003). Vol. 192, pp. 2649–2667

    Abstract
    Given a 3D point set, the problem of defining the volume associated, dividing it into a set of regions (elements) and defining a boundary surface is tackled. Several [...]

  • 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 [...]

  • 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 [...]

  • H. Tschöpe, P. Wriggers, E. Oñate
    Engineering Computations (2003). Vol. 20 (5-6), pp. 611-628

    Abstract
    The subject of this paper is the computation of instability points in mechanical problems with the finite element method. The objective is to extend the application of critical [...]

  • Comput. Methods Appl. Mech. Engrg., (2001). Vol. 191, pp. 635-660

    Abstract
    A stabilized semi-implicit fractional step finite element method for solving coupled fluid-structure interaction problems involving free surface waves is presented. The stabilized [...]

  • 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 [...]

  • Int. J. Numer. Meth. Engng. (2012). Vol. 89 (11), pp. 1367-1391

    Abstract
    A new Petrov–Galerkin (PG) method involving two parameters, namely α1 and α2, is presented, which yields the following schemes on rectangular [...]

  • 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 [...]

  • 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 [...]

  • Int. J. Numer. Meth. Engng. (2010). Vol. 199, pp. 525–546

    Abstract
    We present the design of a high-resolution Petrov–Galerkin (HRPG) method using linear finite elements for the problem defined by the residual R (phi):= partial phi [...]

  • Comput. Methods Appl. Mech. Engrg., (2001). Vol. 191 (6–7), pp. 583-593

    Abstract
    A particle method is presented for the solution of the incompressible inviscid fluid flow equation using a Lagrangian formulation. The interpolated function are those used [...]

  • Int. J. Numer. Meth. Engng. (2010). Vol. 81 (8), pp. 1046-1072

    Abstract
    A new computational procedure for analysis of the melting and flame spread of polymers under fire conditions is presented. The method, termed Particle Finite Element Method [...]

  • Int. J. Numer. Meth. Biomed. Engng (2010). Vol. 26 (10), pp. 1313-1330

    Abstract
    The purpose of this paper is to put in evidence that the fractional‐step method (FSM) used to solve the incompressible transient Euler and Navier–Stokes equations [...]

  • Computational Mechanics (2006). Vol. 38 (4-5), pp. 440-455

    Abstract
    We present a general formulation for incompressible fluid flow analysis using the finite element method. The necessary stabilization for dealing with convective effects and [...]

  • 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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2012). Vol. 213-216, pp. 327-352

    Abstract
    A multidimensional extension of the HRPG method using the lowest order block finite elements is presented. First, we design a nondimensional element number that quantifies [...]

  • F. Flores, E. Oñate
    Int. J. Numer. Meth. Engng. (2001). Vol. 51 (1), pp. 57-83

    Abstract
    A simple finite element triangle for thin shell analysis is presented. It has only nine translational degrees of freedom and is based on a total Lagrangian formulation. Large [...]

  • H. Tschöpe, E. Oñate, P. Wriggers
    Computational Mechanics (2003). Vol. 31 (1-2), pp. 173–178

    Abstract
    The extended system is known as a reliable algorithm for the direct computation of instability points on the equilibrium path of mechanical structures. This article describes [...]

  • Int. J. Numer. Meth. Fluids (2010). Vol. 65 (1-3), pp. 106-134

    Abstract
    We present a collection of stabilized finite element (FE) methods derived via first‐ and second‐order finite calculus (FIC) procedures. It is shown that several well known [...]

  • F. Flores, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 5297–5315

    Abstract
    In this paper a finite element for the non-linear analysis of two dimensional beams and axisymmetric shells is presented. The element uses classical thin shell assumptions [...]

  • Int. J. Numer. Meth. Engng. (2004). Vol. 60 (1), pp. 255-281

    Abstract
    The expression ‘finite calculus’ refers to the derivation of the governing differential equations in mechanics by invoking balance of fluxes, forces, etc. in a [...]

  • Int. J. Numer. Meth. Engng. (2004). Vol. 61 (7), pp. 964-989

    Abstract
    Particle Methods are those in which the problem is represented by a discrete number of particles. Each particle moves accordingly with its own mass and the external/internal [...]

  • 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. [...]

  • E. Ortega, R. Flores, E. Oñate, S. Idelsohn
    Computational Mechanics (2017). Vol. 60 (2), pp. 219-233

    Abstract
    An a-posteriori error estimate with application to inviscid compressible flow problems is presented. The estimate is a surrogate measure of the discretization error, obtained [...]

  • Engineering Computations (2010). Vol. 27 (1), pp. 20-56

    Abstract
    The field of fluid-structure interaction (FSI) has important applications ranging from the bio-medical to the civil and aeronautical engineering fields. Despite the different [...]

  • 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 [...]

  • R. Lopez, E. Balsa-Canto, E. Oñate
    Int. J. Numer. Meth. Engng. (2008). Vol. 75 (11), pp. 1341-1360

    Abstract
    In this work a conceptual theory of neural networks (NNs) from the perspective of functional analysis and variational calculus is presented. Within this formulation, the learning [...]

  • Computational Mechanics (2014). Vol. 54 (1), pp. 85-107

    Abstract
    We present a generalized Lagrangian formulation for analysis of industrial forming processes involving thermally coupled interactions between deformable continua. The governing [...]

  • Hormigón y Acero (2019). (prepint) 69 (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 [...]

  • Int. J. Numer. Meth. Engng. (2013). Vol. 95 (8), pp. 631-660

    Abstract
    A new bilinear four‐noded quadrilateral element (called quadrilateral linear refined zigzag) for the analysis of composite laminated and sandwich plates/shells based on [...]

  • 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., (2013). Vol. 255 (1), pp. 210-225

    Abstract
    A fully Lagrangian compressible numerical framework for the simulation of underwater implosion of a large air bubble is presented. Both air and water are considered compressible [...]

  • 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 [...]

  • Computational Mechanics (2012). Vol. 50 (6), pp. 805-819

    Abstract
    This paper aims to present a coupled solution strategy for the problem of seepage through a rockfill dam taking into account the free-surface flow within the solid as well [...]

  • E. Oñate, J. Rojek, M. Chiumenti, S. Idelsohn, F. Pin, R. Aubry
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 6750-6777

    Abstract
    The paper describes some recent developments in finite element and particle methods for analysis of a wide range of bulk forming processes. The developments include new stabilized [...]

  • Comput. Methods Appl. Mech. Engrg., (2003). Vol. 192 (28-30), pp. 3043-3059

    Abstract
    The paper introduces a general procedure for computational analysis of a wide class of multiscale problems in mechanics using a finite calculus (FIC) formulation. The FIC [...]

  • 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 [...]

  • R. Lohner, C. Yang, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 5597–5620

    Abstract
    A volume of fluid (VOF) technique has been developed and coupled with an incompressible Euler/Navier–Stokes solver operating on adaptive, unstructured grids to simulate [...]

  • 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 (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 [...]

  • A. Hanganu, E. Oñate, A. Barbat
    Computers and Structures (2002). Vol. 80 (20-21), pp. 1667-1687

    Abstract
    The paper introduces a new global damage evaluation method which leads to a meaningful global damage index. A numerical procedure for the prediction of local and [...]

  • Computers and Structures (2003). Vol. 81 (8-11), pp. 655-671

    Abstract
    A method is presented for the solution of the incompressible fluid flow equations using a Lagrangian formulation. The interpolation functions are [...]

  • 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 [...]

  • 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 [...]

  • Comp. Part. Mech (2017). Vol. 4 (3), pp. 345-356

    Abstract
    Dam bottom outlets play a vital role in dam operation and safety, as they allow controlling the water surface elevation below the spillway level. For partial openings, water [...]

  • 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. Soudah, P. Rudenick, M. Bordone, D. García-Dorado, A. Evangelista, E. Oñate
    Computer Methods in Biomechanics and Biomedical Engineering (2015). Vol. 18 (8), pp. 805-815

    Abstract
    An aortic dissection (AD) is a serious condition defined by the splitting of the arterial wall, thus generating a secondary lumen [the false lumen (FL)]. Its management, treatment [...]

  • 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 [...]

  • R. Löhner, C. Sacco, E. Oñate, S. Idelsohn
    Int. J. Numer. Meth. Engng. (2002). Vol. 53 (8), pp. 1765-1779

    Abstract
    A weighted least squares finite point method for compressible flow is formulated. Starting from a global cloud of points, local clouds are constructed using a Delaunay technique [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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., (2006). Vol. 195, pp. 4681–4696

    Abstract
    In the last decade a family of methods called meshless methods has been developed both for structural and fluid mechanics problems. After these ideas, a possible classification [...]

  • 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 [...]

  • Y. Bazilevs, K. Kamran, G. Moutsanidis, D. Benson, E. Oñate
    Computational Mechanics (2017). Vol. 60 (1), pp. 83-100

    Abstract
    In this two-part paper we begin the development of a new class of methods for modeling fluid–structure interaction (FSI) phenomena for air blast. We aim to develop accurate, [...]

  • 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 [...]

  • 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 [...]

  • Computational Mechanics (2018). Published online

    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 [...]

  • C. Felippa, E. Oñate
    Computers and Structures (2003). Vol. 81 (13), pp. 1343-1357

    Abstract
    We define stress and strain splittings appropriate to linearly elastic anisotropic materials with volumetric constraints. The treatment includes rigidtropic materials, [...]

  • Computers and Structures (2005). Vol. 83 (17-18), pp. 1459-1475

    Abstract
    A method is presented for the solution of an incompressible viscous fluid flow with heat transfer using a fully Lagrangian description of the motion. Due [...]

  • M. Santasusana, J. Irazábal, E. Oñate, J. Carbonell
    Comp. Part. Mech (2016). Vol. 3, pp. 407-428

    Abstract
    In this work, we present a new methodology for the treatment of the contact interaction between rigid boundaries and spherical discrete elements (DE). Rigid body parts are [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • Engineering Computations (2003). Vol. 20 (5-6), pp. 583-600

    Abstract
    The extended Delaunay tessellation (EDT) is presented in this paper as the unique partition of a node set into polyhedral regions defined by nodes lying on the nearby Voronoï [...]

  • 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 [...]

  • 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 [...]

  • E. Oñate, J. Rojek
    Comput. Methods Appl. Mech. Engrg., (2004). Vol 193, 3087-3128

    Abstract
    The paper presents combination of Discrete Element Method (DEM) and Finite Element Method (FEM) for dynamic analysis of geomechanics problems. Combined models can employ spherical [...]

  • E. Oñate, F. Flores
    Comput. Methods Appl. Mech. Engrg., (2005). Vol. 194 (21-24), pp. 2406-2443

    Abstract
    A family of rotation-free three node triangular shell elements is presented. The simplest element of the family is based on an assumed constant curvature field expressed in [...]

  • Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195 (13-16), pp. 1793–1825

    Abstract
    A finite element method (FEM) for steady-state convective-diffusive problems presenting sharp gradients of the solution both in the interior of the domain and in boundary [...]

  • 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 [...]

  • 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. [...]

  • S. Idelsohn, M. Mier-Torrecilla, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2009). vol. 198, pp. 2750–2767

    Abstract
    Particle methods are those in which the problem is represented by a discrete number of particles. Each particle moves accordingly with its own mass and the external/internal [...]

  • 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 [...]

  • Int. J. Numer. Meth. Engng. (2003). Vol. 58 (6), pp. 893-912

    Abstract
    A meshless method is presented which has the advantages of the good meshless methods concerning the ease of introduction of node connectivity in a bounded time of order n, [...]

  • R. Löhner, E. Oñate
    Int. J. Numer. Meth. Engng. (2009). Vol. 78 (13), pp. 1618-1630

    Abstract
    An advancing front technique for filling space with arbitrary, separated objects has been developed. The input required consists of the specification of the desired object [...]

  • F. Flores, E. Oñate
    Int. J. Numer. Meth. Engng. (2007). Vol. 69 (7), pp. 1521-1551

    Abstract
    This paper extends the capabilities of previous BST and EBST rotation‐free thin shell elements to the analysis of kinked and branching surfaces. The computation of the curvature [...]

  • Int. J. Numer. Meth. Engng. (2009). Vol. 80, (10), pp. 1261-1294

    Abstract
    In this paper, the so‐called added‐mass effect is investigated from a different point of view of previous publications. The monolithic fluid–structure problem is [...]

  • 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 [...]

  • 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 [...]

  • E. Oñate, S. Idelsohn, C. Felippa
    Int. J. Numer. Meth. Engng. (2011). Vol. 87 (1-5), pp. 171-195

    Abstract
    We present a stabilized numerical formulation for incompressible continua based on a higher‐order Finite Calculus (FIC) approach and the finite element method. The focus [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • E. Ortega, E. Oñate, S. Idelsohn, C. Buachart
    Int. J. Numer. Meth. Engng. (2011). Vol. 88 (2), pp. 180-204

    Abstract
    An adaptive Finite Point Method (FPM) for solving shallow water problems is presented. The numerical methodology we propose, which is based on weighted‐least squares approximations [...]

  • 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 [...]

  • C. Labra, E. Oñate
    Commun. Numer. Meth. Engng (2009). Vol. 25 (7), pp. 837-849

    Abstract
    The first step in a discrete element simulation is the discretization of the domain into a set of particles. The cost of generating a good cylindrical or spherical packing [...]

  • R. Aubry, R. Lohner, E. Oñate, S. Idelsohn
    American Institute of Aeronautics and Astronautics Paper (AIAA) (2007). 2007-0715

    Abstract
    An incompressible Finite Element Lagrangian code is presented and validated against classical experimental and numerical Eulerian results. The main distinction between an [...]

  • Comput. Methods Appl. Mech. Engrg., (2015). Vol. 293, pp. 191-206

    Abstract
    We present a 3-noded triangle and a 4-noded tetrahedra with a continuous linear velocity and a discontinuous linear pressure field formed by the sum of an unknown ''constant [...]

  • E. Oñate, J. Miquel, G. Hauke
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 3926–3946

    Abstract
    A stabilized finite element method (FEM) for the steady state advection-diffusion-absorption equation is presented. The stabilized formulation is based on the modified governing [...]

  • 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 [...]

  • 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 [...]

  • 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. [...]

  • 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 [...]

  • 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 [...]

  • J. Rojek, E. Oñate, R. Taylor
    Int. J. Numer. Meth. Engng. (2006). Vol. 66 (10), pp. 1547-1568

    Abstract
    The characteristic‐based split (CBS) stabilization procedure developed originally in fluid mechanics has been adapted successfully to solid mechanics problems. The CBS algorithm [...]

  • Int. J. Numer. Meth. Engng. (2011). Vol. 87 (11), pp. 1105-1126

    Abstract
    This work analyzes the influence of the discretization error associated with the finite element (FE) analyses of each design configuration proposed by the structural shape [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • R. Löhner, E. Oñate
    Int. J. Numer. Meth. Engng. (2004). Vol. 61 (12), pp. 1977-1991

    Abstract
    An advancing front space‐filling technique for arbitrary objects has been developed. The input required consists of the specification of the desired mean point distance [...]

  • B. Boroomand, A. Tabatabaei, E. Oñate
    Int. J. Numer. Meth. Engng. (2005). Vol. 63 (3), pp. 351-379

    Abstract
    A stabilized version of the finite point method (FPM) is presented. A source of instability due to the evaluation of the base function using a least square procedure is discussed. [...]

  • Computational Mechanics (2008). Vol. 43 (1), pp. 125-132

    Abstract
    The paper aims to introduce new fluid–structure interaction (FSI) tests to compare experimental results with numerical ones. The examples have been chosen for a particular [...]

  • G. Casas, D. Mukherjee, M. Celigueta, T. Zohdi, E. Oñate
    Comp. Part. Mech (2017). Vol. 4 (2), pp. 181-198

    Abstract
    A modular discrete element framework is presented for large-scale simulations of industrial grain-handling systems. Our framework enables us to simulate a markedly larger [...]

  • Int. J. Numer. Meth. Engng. (2012). Vol. 92 (9), pp. 782-801

    Abstract
    In this paper, we present a computational algorithm for solving an important practical problem, namely, the thermoplastic polymer melting under fire conditions. We propose [...]

  • 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 [...]

  • 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. [...]

  • 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 [...]

  • 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 [...]

  • Computers and Structures (2002). Vol. 80 (16-17), pp. 1399-1408

    Abstract
    One of the major difficulties in meshing 3D complex geometries is to deal with non-proper geometrical definitions coming from CAD systems. Typically, [...]

  • F. Rastellini, S. Oller, O. Salomon, E. Oñate
    Computers and Structures (2008). Vol. 86 (9), pp. 879-896

    Abstract
    An innovative computational methodology is proposed for modelling the material non-linearmechanical behaviour of FRP structures. To model a single unidirectional composite [...]

  • 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 [...]

  • Finite Elements in Analysis and Design (2009). Vol. 45 (6-7), pp. 395-405

    Abstract
    A new methodology for the geometrically nonlinear analysis of orthotropic membrane structures using triangular finite elements is presented. The approach is based on writing [...]

  • 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 [...]

  • E. Haug, R. Löhner, 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 [...]

  • Y. Fragakis, E. Oñate
    Commun. Numer. Meth. Engng (2008). Vol. 24 (11), pp. 1009-1017

    Abstract
    Delaunay triangulation is a geometric problem that is relatively difficult to parallelize. Parallel algorithms are usually characterized by considerable interprocessor communication [...]

  • International Journal of Forming Processes (2002). Vol. 5 (2-3-4), pp. 493-503

    Abstract
    The scatter in the fatigue life of the metallic structures seems to be mainly caused by internal defects of the material (porosity, inclusions as oxide films and carbon layers, [...]

  • 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 [...]

  • F. Flores, E. Oñate
    Finite Elements in Analysis and Design (2011). Vol. 47 (9), pp. 982-990

    Abstract
    This paper presents a formulation for analysis of thin elastic membranes using a rotation-free shell element within an explicit time integration strategy. The applications [...]

  • 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. [...]

  • 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 [...]

  • E. Oñate, J. Rojek, R. Taylor, O. Zienkiewicz
    Int. J. Numer. Meth. Engng. (2004). Vol. 59 (11), pp. 1473-1500

    Abstract
    Many finite elements exhibit the so‐called ‘volumetric locking’ in the analysis of incompressible or quasi‐incompressible problems.In this paper, a new approach [...]

  • 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 [...]

  • S. Idelsohn, N. Nigro, A. Limache, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2012). Vol. 217-220, pp. 168-185

    Abstract
    An explicit time integrator without the CFL < 1 restriction for the momentum equation is presented. This allows stable large time-steps in problems dominated [...]

  • 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 [...]

  • 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 [...]

  • R. Rossi, M. Lazzari, R. Vitaliani, E. Oñate
    Int. J. Numer. Meth. Engng. (2005). Vol. 62 (15), pp. 2127-2153

    Abstract
    The computational challenge in dealing with membrane systems is closely connected to the lack of bending stiffness that constitutes the main feature of this category of structures. [...]

  • N. Wiberg, E. Oñate, O. Zienkiewicz, R. Taylor, J. Hult
    Int. J. Numer. Meth. Engng. (2006). Vol. 67 (2), pp. 158-159

    Abstract
    Professor E. M. Alf Samuelsson from Chalmers University, Göteborg, Sweden, died on the 3rd of June 2005 at the age of 75 after a lengthy illness. Professor Samuelsson [...]

  • 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 [...]

  • Computational Mechanics (2015). Vol. 55 (5), pp. 903-920

    Abstract
    Numerically stable formulas are presented for the closed-form analytical solution of the X-IVAS scheme in 3D. This scheme is a state-of-the-art particle-based explicit exponential [...]

  • 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. [...]

  • Computational Mechanics (2006). Vol. 38 (4-5), pp. 294-309

    Abstract
    The method presented in Aubry et al. (Comput Struc 83:1459–1475, 2005) for the solution of an incompressible viscous fluid flow with heat transfer using a fully Lagrangian [...]

  • Computational Mechanics (2011). Vol. 48 (3), pp. 307-318

    Abstract
    We present some developments in the particle finite element method (PFEM) for analysis of complex coupled problems in mechanics involving fluid–soil–structure [...]

  • 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 [...]

  • C. Feng, S. Li, E. Oñate
    Engineering Computations (2015). Vol. 32 (4), pp. 1080-1103

    Abstract
    Purpose   – Continuum-based discrete element method is an explicit numerical method, which is a combination of block discrete element method (DEM) [...]

  • Int. J. Numer. Meth. Engng. (2012). Vol. 90 (12), pp. 1435-1451

    Abstract
    We propose a technique for improving mass‐conservation features of fractional step schemes applied to incompressible flows. The method is illustrated by using a Lagrangian [...]

  • Computational Mechanics (2010). Vol. 46 (6), pp. 883-899

    Abstract
    Current work presents a monolithic method for the solution of fluid–structure interaction problems involving flexible structures and free-surface flows. The technique [...]

  • 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 [...]

  • E. Oñate, R. Taylor, O. Zienkiewicz, J. Rojek
    Engineering Computations (2003). Vol. 20 (5-6), pp. 629-658

    Abstract
    In this paper, a residual correction method based upon an extension of the finite calculus concept is presented. The method is described and applied to the solution of a scalar [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • Computers and Structures (2008). Vol. 86 (13-14), pp. 1563-1578

    Abstract
    Evolutionary methods are a powerful and robust tool for the solution of structural shape optimization problems. Nevertheless, the use of these methods requires the structural [...]

  • 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 [...]

  • 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 [...]

  • P. Dadvand, R. Rossi, M. Gil, X. Martorell, J. Cotela, E. Juanpere, S. Idelsohn, E. Oñate
    Computers and Fluids (2013). Vol. 80, pp. 301-309

    Abstract
    Creating a highly parallelizable code is a challenge specially for Distributed Memory Machines (DMMs). Moreover, algorithms and data structures suitable for these platforms [...]

  • P. Fuentes, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2010). vol. 199, pp. 383–391

    Abstract
    A new triangle shell element is presented. The advantages of this element are threefold: simplicity, generality and geometrical accuracy. The formulation is free from rotation [...]

  • Computational Mechanics (2009). Vol. 44 (3), pp. 363-375

    Abstract
    A methodology for the geometrically nonlinear analysis of orthotropic shells using a rotation-free shell triangular element is developed. The method is based on the computation [...]

  • Computational Mechanics (2007). Vol. 40 (6), pp. 949-963

    Abstract
    At the local level, successful meshless techniques such as the Finite Point Method must have two main characteristics: a suitable geometrical support and a robust numerical [...]

  • Int. J. Numer. Meth. Engng. (2016). Vol. 107 (11), pp. 970-990

    Abstract
    We present three velocity‐based updated Lagrangian formulations for standard and quasi‐incompressible hypoelastic‐plastic solids. Three low‐order finite elements are [...]

  • C. Felippa, E. Oñate
    Computational Mechanics (2007). Vol. 39 (2), pp. 91-111

    Abstract
    This article presents the first application of the Finite Calculus (FIC) in a Ritz-FEM variational framework. FIC provides a steplength parametrization of mesh dimensions, [...]

  • S. Idelsohn, M. Mier-Torrecilla, N. Nigro, E. Oñate
    Computational Mechanics (2010). Vol. 46 (1), pp. 115-124

    Abstract
    Heterogeneous incompressible fluid flows with jumps in the viscous properties are solved with the particle finite element method using continuous and discontinuous pressure [...]

  • Computational Mechanics (2013). Vol. 52 (3), pp. 607-629

    Abstract
    Underground construction involves all sort of challenges in analysis, design, project and execution phases. The dimension of tunnels and their structural requirements are [...]

  • Engineering Computations (2008). Vol. 25 (3-4), pp. 385-425

    Abstract
    Purpose – The purpose of this paper is to evaluate the possibilities of the particle finite element method for simulation of free surface flows. Design/methodology/approach [...]

  • 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 [...]

  • E. Car, F. Zalamea, S. Oller, J. Canet, E. Oñate
    Int. J. Solids and Structures (2002). Vol. 39 (7), pp. 1967-1986

    Abstract
    In this work, two methodologies for the analysis of unidirectional fiber reinforced composite materials are presented. The first methodology used is a generalized anisotropic [...]

  • K. Kamran, R. Rossi, E. Oñate
    Computational Mechanics (2003). Vol. 52 (1), pp. 1-16

    Abstract
    The simulation of the contact within shells, with all of its different facets, represents still an open challenge in Computational Mechanics. Despite the effort spent in the [...]

  • B. Boroomand, M. Najjar, E. Oñate
    Computational Mechanics (2009). Vol. 44, pp. 173-190

    Abstract
    In this paper we propose a new mesh-less method based on a sub-domain collocation approach. By reducing the size of the sub-domains the method becomes similar to the well-known [...]

  • E. Oñate, P. Cendonya, J. Canet
    Engineering Computations (2002). Vol. 19 (5-6), pp. 662-706

    Abstract
    The paper describes the application of the simple rotation‐free basic shell triangle (BST) to the non‐linear analysis of shell structures using an explicit dynamic formulation. [...]

  • F. Zárate, E. Oñate
    Computational Mechanics (2012). Vol. 49 (4), pp. 487-503

    Abstract
    The paper extends recent work of the authors to include transverse shear effects on rotation-free triangular element for plates (Oñate and Zárate in Int J Numer [...]

  • Computational Mechanics (2014). Vol. 54 (4), pp. 1013-1022

    Abstract
    A reduced-order model for an efficient analysis of cardiovascular hemodynamics problems using multiscale approach is presented in this work. Starting from a patient-specific [...]

  • R. Löhner, E. Oñate
    Finite Elements in Analysis and Design (2010). Vol. 46 (1-2), pp. 140-151

    Abstract
    A review is given of advancing front techniques for filling space with arbitrary separated objects. Over the last decade, these techniques have reached a considerable degree [...]

  • Int. J. of Vehicle Design (2005). Vol. 39 (1-2), pp. 110–124

    Abstract
    An important concern in sheet stamping is the risk of obtaining brittle final products that can be affected by fracture. Monte Carlo simulations presented herein show that [...]

  • Computational Materials Science (2005). Vol. 32 (2), pp. 175-195

    Abstract
    In this paper, a thermo-mechanical constitutive model for the predictions of fatigue in structures using the finite element method is formulated. The model is based on the [...]

  • 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 [...]

  • J. Rojek, C. Labra, O. Su, E. Oñate
    Int. J. Solids and Structures (2012). Vol 49 (13), pp. 1497-1517

    Abstract
    Comparative studies of different discrete element models of a rock-type material are presented. The discrete element formulation employs spherical particles with the cohesive [...]

  • 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 [...]

  • J. Appl. Mech (2003). Vol. 70 (1), pp. 18-26

    Abstract
    A stabilized semi-implicit fractional step algorithm based on the finite element method for solving ship wave problems using unstructured meshes is presented. The stabilized [...]

  • A. Jarauta, M. Secanell, J. Pons Prats, P. Ryzhakov, S. Idelsohn, E. Oñate
    Int. J. Hydrogen Energy (2015). Vol. 40 (15), pp. 5375-5383

    Abstract
    Water management is one of the key factors in Proton Exchange Fuel Cell (PEFC) performance. The water produced within the fuel cell is evacuated through the gas channels, [...]

  • 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, 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 [...]

  • 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 [...]

  • K. Kamran, R. Rossi, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2015). Vol. 294, pp. 1-18

    Abstract
    The simulation of immiscible two-phase flows on Eulerian meshes requires the use of special techniques to guarantee a sharp definition of the evolving fluid interface. This [...]

  • C. Felippa, E. Oñate, S. Idelsohn
    Archives of Comp. Meths. Engng. (2017). Vol. 25 (4), pp. 919–963

    Abstract
    This is part of an article series on a variational framework for continuum mechanics based on the Finite Increment Calculus (FIC). The formulation utilizes high order derivatives [...]

  • Comput. Methods Appl. Mech. Engrg., (2017). Vol. 315, pp. 1080-1097

    Abstract
    We propose here a displacement-based updated Lagrangian fluid model developed to facilitate a monolithic coupling with a wide range of structural elements [...]

  • F. Zarate, J. Gonzalez, J. Miquel, R. Lohner, E. Oñate
    Underground Space (2018). (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. [...]

  • Int. J. Numer. Meth. Fluids (2008). Vol. 60 (9), pp. 937-971

    Abstract
    The finite point method (FPM) is a meshless technique, which is based on both, a weighted least‐squares numerical approximation on local clouds of points and a collocation [...]

  • M. Mier-Torrecilla, A. Geyer, J. Phillips, S. Idelsohn, E. Oñate
    Int. J. Numer. Meth. Fluids (2011). Vol. 69 (5), pp. 1016-1030

    Abstract
    Negatively buoyant jets consist in a dense fluid injected vertically upward into a lighter ambient fluid. The numerical simulation of this kind of buoyancy‐driven flows [...]

  • Computers and Fluids (2007). Vol. 36 (1), pp. 27-38

    Abstract
    The Particle Finite Element Method (PFEM) is a well established numerical method [Aubry R, Idelsohn SR, Oñate E, Particle finite element method in fluid mechanics [...]

  • Int. J. Numer. Meth. Fluids (2007). Vol. 54 (6-8), pp. 639-664

    Abstract
    The Navier–Stokes equations written in Laplace form are often the starting point of many numerical methods for the simulation of viscous flows. Imposing the natural [...]

  • A. Geyer, J. Phillips, M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    Experiments in Fluids (2011). Vol 52 (1), pp. 261-257

    Abstract
    In this paper we investigate experimentally the injection of a negatively buoyant jet into a homogenous immiscible ambient fluid. Experiments are carried out by injecting [...]

  • Mathematical Models and Methods in Applied Sciences (2013). Vol. 23 (2), pp. 339–367

    Abstract
    We propose a fully Lagrangian monolithic system for the simulation of the underwater implosion of cylindrical aluminum containers. A variationally stabilized form of the Lagrangian [...]

  • Int. J. Numer. Meth. Fluids (2013). Vol. 73 (4), pp. 323-343

    Abstract
    A finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind‐biased [...]

  • Int. J. Numer. Meth. Fluids (2014). Vol. 74 (10), pp. 732-748

    Abstract
    In this work, the finite point method is applied to the solution of high‐Reynolds compressible viscous flows. The aim is to explore this important field of applications [...]

  • Computers and Fluids (2014). Vol. 89, pp. 53-65

    Abstract
    A comparative assessment of the Finite Point Method (FPM) is presented. Using a wing-fuselage configuration under transonic inviscid flow conditions as reference test case, [...]

  • S. Idelsohn, J. Marti, P. Becker, E. Oñate
    Int. J. Numer. Meth. Fluids (2014). Vol. 75 (9), pp. 621-644

    Abstract
    Multifluids are those fluids in which their physical properties (viscosity or density) vary internally and abruptly forming internal interfaces that introduce a large nonlinearity [...]

  • 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 [...]

  • Int. J. Numer. Meth. Fluids (2014). Vol 74 (12), pp. 919-934

    Abstract
    We propose a simple technique for improving computationally the efficiency of monolithic velocity–pressure solvers for incompressible flow problems. The idea consists [...]

  • Acta Geotechnica (2006). Vol. 1 (4), pp. 237-252

    Abstract
    We present a general formulation for modeling bed erosion in free surface flows using the particle finite element method (PFEM). The key feature of the PFEM is the use of [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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
    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 [...]

  • Int. J. Computational Fluid Dynamics (2002). Vol. 16 (4), pp. 263-275

    Abstract
    A Lagrangian-type panel method in the time domain is proposed for potential flows with a moving free surface. After a spatial semi-discretization with a low-order scheme, [...]

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