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    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 [...]

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    Comput. Methods Appl. Mech. Engrg., (2017). (prepint)

    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
    Encyclopedia of Computational Mechanics. Second Edition, Vol. 3 (2017). Vol. 3 (preprint)

    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 [...]

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    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 [...]

  • Finite Elements in Analysis and Design (2016). Vol. 112 pp. 26-39 (preprint)

    Abstract
    Progressive fracture in quasi-brittle materials is often treated via strain softening models in continuum damage mechanics. Such constitutive relations favour spurious strain [...]

  • Comput. Methods Appl. Mech. Engrg., (2016). Vol. 107(11) pp. 970-990 (preprint) Vol. 298, pp. 520-547; doi: 10.1016/j.cma.2015.09.023

    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
    Computational Particle Mechanics (2016). Vol. 3(2) pp. 263-276 (preprint)

    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. [...]

  • E. Oñate, J. Miquel, P. Nadukandi
    Comput. Methods Appl. Mech. Engrg., (2016). Vol. 298() pp. 373-406 Vol. 298, pp. 373-406; doi: 10.1016/j.cma.2015.09.022

    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; doi: 10.1007/s40571-015-0080-5

    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; doi: 10.1007/s40571-015-0067-2

    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
    Aerospace Science and Technology (2015). Vol. 46 pp. 422-435 (preprint)

    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; doi: 10.1002/nme.4839

    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
    Computational Mechanics (2015). Vol. 56(1) pp. 113-129 (preprint)

    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. Khardar, L. Ring
    Computational Particle Mechanics (2015). Vol. 2(2) pp. 139-160 (preprint)

    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; doi: 10.1007/s40571-014-0012-9

    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; doi: 10.1007/s00466-014-1016-2

    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; doi: 10.1108/EC-10-2012-0247

    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; doi: 10.1002/fld.3877

    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) doi: 10.1016/j.cma.2015.04.003

    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 [...]

  • F. Kempel, B. Schartel, J. Marti, K. Butler, R. Rossi, S. Idelsohn, E. Oñate
    Fire and Materials (2015). Vol. 39 (6), pp. 570-584; doi: 10.1002/fam.2257

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2008). Vol. 197 (19-20), pp. 1777–1800; doi: 10.1016/j.cma.2007.06.005

    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. [...]

  • 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 [...]

  • S. Idelsohn, E. Oñate, F. Pin, N. Calvo
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195 (17-18), pp. 2100-2123; doi: 10.1016/j.cma.2005.02.026

    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 [...]

  • S. Idelsohn, J. Marti, A. Limache, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2008). Vol. 197, pp. 1762–1776; doi: 10.1016/j.cma.2007.06.004

    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 [...]

  • Int. J. Numer. Meth. Engng. (2010). Vol. 83 (2), pp.196-227; doi: 10.1002/nme.2836

    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, N. Calvo, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2003). Vol. 192, pp. 2649–2667; doi:10.1016/S0045-7825(03)00298-6

    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. (2011). Vol. 86 (1), pp. 18-46; doi: 10.1002/nme.3043

    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 [...]

  • P. Becker, S. Idelsohn, E. Oñate
    Computational Mechanics (2015). Vol. 55, pp. 1091–1104 (preprint); doi: 10.1007/s00466-014-1107-0

    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 [...]

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    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, A. Eijo, S. Oller
    Comput. Methods Appl. Mech. Engrg., (2012). Vol. 213–216, pp. 362–382; doi: 10.1016/j.cma.2011.11.023

    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 [...]

  • H. Tschöpe, P. Wriggers, E. Oñate
    Engineering Computations (2003). Vol. 20 (5-6), pp. 611-628; doi: 10.1108/02644400310488781

    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., (2006). Vol. 195, pp. 339-362; doi: 10.1016/j.cma.2004.07.054

    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 [...]

  • 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 [...]

  • A. Heege, P. Alart, E. Oñate
    Engineering Computations (1995). Vol. 12 (7), pp. 641-656; doi: 10.1108/02644409510799820

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2001). Vol. 191 (6–7), pp. 583-593; doi: 10.1016/S0045-7825(01)00303-6

    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 [...]

  • F. Flores, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2005). Vol. 194, pp. 907-932; doi: 10.1016/j.cma.2003.08.012

    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) [...]

  • Int. J. Numer. Meth. Engng. (2004). Vol. 61 (7), pp. 964-989; doi: 10.1002/nme.1096

    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 [...]

  • F. Flores, E. Oñate
    Int. J. Numer. Meth. Engng. (2001). Vol. 51 (1), pp. 57-83; doi: 10.1002/nme.147

    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 [...]

  • Computational Mechanics (2014). Vol. 54 (1), pp. 85-107; doi: 10.1007/s00466-014-1016-2

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

  • Int. J. Solids and Structures (1989). Vol. 25 (3), pp. 299-326; doi: 10.1016/0020-7683(89)90050-4

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    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 [...]

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

  • Int. J. Numer. Meth. Engng. (2010). Vol. 81 (8), pp. 1046-1072; doi: 10.1002/nme.2731

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (1999). Vol. 173, pp. 241-255; doi: 10.1016/S0045-7825(98)00272-2

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    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 [...]

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    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. [...]

  • Comput. Methods Appl. Mech. Engrg., (2003). Vol. 192 (28-30), pp. 3043-3059; doi: 10.1016/S0045-7825(03)00340-2

    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 [...]

  • R. Lopez, E. Balsa-Canto, E. Oñate
    Int. J. Numer. Meth. Engng. (2008). Vol. 75 (11), pp. 1341-1360; doi: 10.1002/nme.2304

    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 [...]

  • Engineering Computations (2010). Vol. 27 (1), pp. 20-56; doi: 10.1108/02644401011008513

    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 [...]

  • E. Oñate, J. García, S. Idelsohn, F. Pin
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195 (23-24), pp. 3001-3037 doi: 10.1016/j.cma.2004.10.016

    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 [...]

  • E. Oñate, J. García
    Comput. Methods Appl. Mech. Engrg., (2001). Vol. 191, pp. 635-660; doi: 10.1016/S0045-7825(01)00306-1

    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 [...]

  • Int. J. Numer. Meth. Engng. (2013). Vol. 95 (8), pp. 631-660; doi: 10.1002/nme.4503

    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 [...]

  • F. Flores, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 5297–5315; doi:10.1016/j.cma.2005.08.021

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2013). Vol. 255 (1), pp. 210-225; doi: 10.1016/j.cma.2012.11.018

    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 [...]

  • 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. [...]

  • Computers and Structures (2003). Vol. 81 (8-11), pp. 655-671; doi: 10.1016/S0045-7949(02)00477-7

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

  • C. Felippa, E. Oñate
    Computers and Structures (2003). Vol. 81 (13), pp. 1343-1357; doi: 10.1016/S0045-7949(03)00060-9

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

  • H. Tschöpe, E. Oñate, P. Wriggers
    Computational Mechanics (2003). Vol. 31 (1-2), pp. 173–178; doi: 10.1007/s00466-002-0403-2

    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 [...]

  • E. Ortega, R. Flores, E. Oñate, S. Idelsohn
    Computational Mechanics (2017). Vol. 60 (2), pp. 219-233; doi: 10.1007/s00466-017-1402-7

    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 [...]

  • R. Löhner, C. Sacco, E. Oñate, S. Idelsohn
    Int. J. Numer. Meth. Engng. (2002). Vol. 53 (8), pp. 1765-1779; doi: 10.1002/nme.334

    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 [...]

  • G. Chiandussi, G. Bugeda, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2000). Vol. 188, pp. 727-742; doi: 10.1016/S0045-7825(99)00358-8

    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 [...]

  • Int. J. Numer. Meth. Engng. (1999). Vol. 45 (5), pp. 503-528; doi: 10.1002/(SICI)1097-0207(19990620)45:5<503::AID-NME570>3.0.CO;2-E

    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 [...]

  • Int. J. Numer. Meth. Engng. (2004). Vol. 60 (1), pp. 255-281; doi: 10.1002/nme.961

    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 [...]

  • A. Hanganu, E. Oñate, A. Barbat
    Computers and Structures (2002). Vol. 80 (20-21), pp. 1667-1687; doi: 10.1016/S0045-7949(02)00012-3

    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 (2005). Vol. 83 (17-18), pp. 1459-1475; doi: 10.1016/j.compstruc.2004.10.021

    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 [...]

  • Int. J. Numer. Meth. Biomed. Engng (2010). Vol. 26 (10), pp. 1313-1330; doi: 10.1002/cnm.1216

    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 [...]

  • Comp. Part. Mech (2017). Vol. 4 (3), pp. 345-356; doi: 10.1007/s40571-016-0117-4

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2000). Vol. 185, pp. 245-277; doi: 10.1016/S0045-7825(99)00262-5

    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; doi: :10.1016/j.cma.2005.11.006

    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. Oñate, J. Rojek, M. Chiumenti, S. Idelsohn, F. Pin, R. Aubry
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 6750-6777; doi: 10.1016/j.cma.2004.10.018

    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 [...]

  • E. Oñate, S. Idelsohn, O. Zienkiewicz, R. Taylor, C. Sacco
    Comput. Methods Appl. Mech. Engrg., (1996). Vol. 195, pp. 6750-6777; doi: 10.1016/j.cma.2004.10.018

    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 [...]

  • E. Oñate, W. Matias
    Comput. Methods Appl. Mech. Engrg., (1996). Vol. 134 (1-2), pp. 135-161; doi: 10.1016/0045-7825(96)01032-8

    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 [...]

  • Int. J. Numer. Meth. Engng. (2009). Vol. 80, (10), pp. 1261-1294; doi: 10.1002/nme.2659

    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 [...]

  • Computational Mechanics (2018). Published online; doi: 10.1007/s00466-018-1647-9

    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 [...]

  • Int. J. Numer. Meth. Engng. (2010). Vol. 199, pp. 525–546; doi: 10.1016/j.cma.2009.10.009

    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 [...]

  • E. Ortega, E. Oñate, S. Idelsohn, C. Buachart
    Int. J. Numer. Meth. Engng. (2011). Vol. 88 (2), pp. 180-204; doi: 10.1002/nme.3171

    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 [...]

  • Int. J. Numer. Meth. Engng. (2008). Vol 76 (9), pp. 1297-1327; doi: 10.1002/nme.2348

    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 [...]

  • E. Oñate, S. Idelsohn, C. Felippa
    Int. J. Numer. Meth. Engng. (2011). Vol. 87 (1-5), pp. 171-195; doi: 10.1002/nme.3021

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (1997). Vol. 143, pp. 49-67; doi: 10.1016/S0045-7825(97)84579-3

    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; doi: 10.1016/j.cma.2009.04.002

    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. (2003). Vol. 58 (6), pp. 893-912; doi: 10.1002/nme.798

    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; doi: 10.1002/nme.2548

    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 [...]

  • Int. J. Numer. Meth. Engng. (2012). Vol. 89 (11), pp. 1367-1391; doi: 10.1002/nme.3291

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

  • Engineering Computations (2003). Vol. 20 (5-6), pp. 583-600; doi: 10.1108/02644400310488763

    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 [...]

  • Comp. Part. Mech (2016). Vol. 3, pp. 407-428; doi: 10.1007/s40571-016-0109-4

    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 [...]

  • C. Labra, E. Oñate
    Commun. Numer. Meth. Engng (2009). Vol. 25 (7), pp. 837-849; doi: 10.1002/cnm.1193

    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 [...]

  • G. Chiandussi, G. Bugeda, E. Oñate
    Commun. Numer. Meth. Engng (2000). Vol. 16 (1), pp. 1-19; doi: 10.1002/(SICI)1099-0887(200001)16:1<1::AID-CNM310>3.0.CO;2-A

    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 [...]

  • E. Oñate, F. Flores
    Comput. Methods Appl. Mech. Engrg., (2005). Vol. 194 (21-24), pp. 2406-2443; doi: 10.1016/j.cma.2004.07.039

    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., (1992). Vol. 94, pp. 239-262; doi: 10.1016/0045-7825(92)90149-E

    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., (2006). Vol. 195 (13-16), pp. 1793–1825; doi: 10.1016/j.cma.2005.05.036

    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 [...]

  • R. Lohner, C. Yang, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2006). Vol. 195, pp. 5597–5620; doi: 10.1016/j.cma.2005.11.010

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2012). Vol. 213-216, pp. 327-352; doi: 10.1016/j.cma.2011.10.003

    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 [...]

  • S. Idelsohn, J. Heinrich, E. Oñate
    Int. J. Numer. Meth. Engng. (1996). Vol. 39 (9), pp. 1455-1473; doi: 10.1002/(SICI)1097-0207(19960515)39:9<1455::AID-NME912>3.0.CO;2-0

    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. 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; doi: 10.1080/10255842.2013.847095

    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 [...]

  • E. Oñate, J. Rojek
    Comput. Methods Appl. Mech. Engrg., (2004). Vol 193, 3087-3128; doi: 10.1016/j.cma.2003.12.056

    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 [...]

  • A. Morán, E. Oñate, J. Miquel
    Int. J. Numer. Meth. Engng. (1998). Vol. 42 (2), pp. 219-236; doi: 10.1002/(SICI)1097-0207(19980530)42:2<219::AID-NME355>3.0.CO;2-E

    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 [...]

  • E. Oñate, F. Zárate
    Int. J. Numer. Meth. Engng. (2000). Vol. 47 (1-3), pp. 557-603; doi: 10.1002/(SICI)1097-0207(20000110/30)47:1/3<557::AID-NME784>3.0.CO;2-9

    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 [...]

  • F. Flores, E. Oñate
    Int. J. Numer. Meth. Engng. (2007). Vol. 69 (7), pp. 1521-1551; doi: 10.1002/nme.1823

    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. (2012). Vol. 92 (9), pp. 782-801; doi: 10.1002/nme.4357

    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 [...]

  • J. Lopez, S. Oller, E. Oñate, J. Lubliner
    Int. J. Numer. Meth. Engng. (1999). Vol. 46 (10), pp. 1651-1671,; doi: 10.1002/(SICI)1097-0207(19991210)46:10<1651::AID-NME718>3.0.CO;2-2

    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 [...]

  • R. Löhner, E. Oñate
    Int. J. Numer. Meth. Engng. (2004). Vol. 61 (12), pp. 1977-1991; doi: 10.1002/nme.1068

    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; doi: 10.1002/nme.1278

    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. [...]

  • Engineering Computations (1993). Vol. 10 (4), pp. 307-321; doi: 10.1108/eb023910

    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 [...]

  • Engineering Computations (1988). Vol. 5 (4), pp. 309-319; doi: http://dx.doi.org/10.1108/eb023750

    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. 427-439; doi: 10.1016/0045-7949(83)90134-7

    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 [...]

  • Y. Bazilevs, K. Kamran, G. Moutsanidis, D. Benson, E. Oñate
    Computational Mechanics (2017). Vol. 60 (1), pp. 83-100; doi: 10.1007/s00466-017-1394-3

    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, H. Tschöpe, P. Wriggers
    Engineering Computations (2001). Vol. 18 (3-4), pp. 642-662; doi: 10.1108/02644400110387190

    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 [...]

  • Int. J. Numer. Meth. Engng. (2011). Vol. 87 (11), pp. 1105-1126; doi: 10.1002/nme.3155

    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 [...]

  • J. Canet, B. Suarez, E. Oñate
    Computers and Structures (1989). Vol. 31 (6), pp. 967-975; doi: 10.1016/0045-7949(89)90281-2

    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 [...]

  • Comp. Part. Mech (2018). Vol. 5 (3), pp. 355-373; doi: 10.1007/s40571-017-0174-3

    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 [...]

  • F. Flores, E. Oñate
    Finite Elements in Analysis and Design (2011). Vol. 47 (9), pp. 982-990; doi: 10.1016/j.finel.2011.03.014

    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 [...]

  • Comp. Part. Mech (2018). Vol. 5 (3) , pp. 411-420; doi: 10.1007/s40571-017-0178-z

    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 [...]

  • Computers and Structures (2001). Vol. 79 (22-25), pp. 2151-2163; doi: 10.1016/S0045-7949(01)00067-0

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

  • Computers and Structures (2002). Vol. 80 (16-17), pp. 1399-1408; doi: 10.1016/S0045-7949(02)00105-0

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

  • G. Casas, D. Mukherjee, M. Celigueta, T. Zohdi, E. Oñate
    Comp. Part. Mech (2017). Vol. 4 (2), pp. 181-198; doi: 10.1007/s40571-015-0089-9

    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 [...]

  • Y. Fragakis, E. Oñate
    Commun. Numer. Meth. Engng (2008). Vol. 24 (11), pp. 1009-1017; doi: 10.1002/cnm.1007

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

  • S. Idelsohn, N. Nigro, A. Limache, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2012). Vol. 217-220, pp. 168-185; doi: 10.1016/j.cma.2011.12.008

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (1998). Vol. 151 (1-2), pp. 233-265; doi: 10.1016/S0045-7825(97)00119-9

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

  • R. Taylor, O. Zienkiewicz, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (1998). Vol. 152, pp. 73-84; doi: 10.1016/S0045-7825(97)00182-5

    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 [...]

  • J. Oliver, E. Oñate
    Int. J. Numer. Meth. Engng. (1984). Vol. 20 (12), pp. 2253-2281; doi: 10.1002/nme.1620201208

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

  • J. Ruberts, S. Oller, E. Casas, S. Proença, E. Oñate
    Int. J. Numer. Meth. Engng. (1999). Vol. 46 (10), pp. 1595-1607; doi: 10.1002/(SICI)1097-0207(19991210)46:10<1595::AID-NME715>3.0.CO;2-Z

    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; doi: 10.1002/nme.1266

    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. [...]

  • E. Dvorkin, E. Oñate, J. Oliver
    Int. J. Numer. Meth. Engng. (1988). Vol. 26 (7), pp. 1597-1613; doi: 10.1002/nme.1620260710

    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 [...]

  • Int. J. Numer. Meth. Engng. (1993). Vol. 36 (8), pp. 1395-1412; doi: 10.1002/nme.1620360808

    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 [...]

  • E. Oñate, M. Cervera, O. Zienkiewicz
    Int. J. Numer. Meth. Engng. (1994). Vol. 37 (2), pp. 181-201; doi: 10.1002/nme.1620370202

    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; doi: 10.1002/(SICI)1097-0207(19960330)39:6<1053::AID-NME896>3.0.CO;2-N

    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. Botello, J. Marroquín, E. Oñate
    Int. J. Numer. Meth. Engng. (1999). Vol. 45 (8), pp. 1069-1084; doi: 10.1002/(SICI)1097-0207(19990720)45:8<1069::AID-NME620>3.0.CO;2-E

    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; doi: 10.1002/nme.922

    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 [...]

  • N. Wiberg, E. Oñate, O. Zienkiewicz, R. Taylor, J. Hult
    Int. J. Numer. Meth. Engng. (2006). Vol. 67 (2), pp. 158-159; doi: 10.1002/nme.1511

    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 [...]

  • J. Oliver, E. Oñate
    Int. J. Numer. Meth. Engng. (1986). Vol. 23 (2), pp. 253-274; doi: 10.1002/nme.1620230209

    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 [...]

  • E. Oñate, F. Zárate, F. flores
    Int. J. Numer. Meth. Engng. (1994). Vol. 37 (15), pp. 2569-2582; doi: 10.1002/nme.1620371505

    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 [...]

  • Computational Mechanics (1998). Vol. 21 (4-5), pp. 283-292; doi:10.1007/s004660050304

    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 [...]

  • Computational Mechanics (2012). Vol. 50 (6), pp. 805-819; doi: 10.1007/s00466-012-0768-9

    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 [...]

  • Engineering Computations (1993). Vol. 10 (6), pp. 543-561; doi: /10.1108/eb023924

    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 [...]

  • M. Kouhi, E. Oñate
    Computational Mechanics (2015). Vol. 56 (1), pp. 113-129; doi: 10.1007/s00466-015-1161-2

    Abstract
    A new implicit stabilized formulation for the numerical solution of the compressible Navier–Stokes equations is presented. The method is based on the finite calculus [...]

  • E. Oñate, R. Taylor, O. Zienkiewicz, J. Rojek
    Engineering Computations (2003). Vol. 20 (5-6), pp. 629-658; doi: 10.1108/02644400310488790

    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 [...]

  • F. Flores, E. Oñate, F. Zarate
    Computational Mechanics (1995). Vol. 17 (1-2), pp. 107-114; doi: 10.1007/BF00356483

    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 (2006). Vol. 38 (4-5), pp. 440-455; doi: 10.1007/s00466-006-0060-y

    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 [...]

  • Computational Mechanics (2008). Vol. 43 (1), pp. 125-132; doi: 10.1007/s00466-008-0245-7

    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 [...]

  • Engineering Computations (2008). Vol. 25 (3-4), pp. 385-425; doi: 10.1108/02644400810874976

    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 [...]

  • Computational Mechanics (2015). Vol. 55 (5), pp. 903-920; doi: 10.1007/s00466-015-1142-5

    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 [...]

  • J. Rojek, E. Oñate, R. Taylor
    Int. J. Numer. Meth. Engng. (2006). Vol. 66 (10), pp. 1547-1568; doi: 10.1002/nme.1689

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

  • K. Kamran, R. Rossi, E. Oñate
    Computational Mechanics (2003). Vol. 52 (1), pp. 1-16; doi: 10.1007/s00466-012-0791-x

    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 [...]

  • O. Zienkiewicz, P. Jain, E. Oñate
    Int. J. Solids and Structures (1978). Vol. 14 (1), pp. 15-38; doi: 10.1016/0020-7683(78)90062-8

    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 [...]

  • Computers and Structures (2008). Vol. 86 (13-14), pp. 1563-1578; doi: 10.1016/j.compstruc.2007.05.010

    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 [...]

  • C. Recarey Morfa, I. Pérez, M. Farías, E. Oñate, R. Valera, H. Casañas
    Comp. Part. Mech (2018). Vol. 5, pp 13–33; doi: 10.1007/s-40571-016-0144-1

    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 [...]

  • F. Rastellini, S. Oller, O. Salomon, E. Oñate
    Computers and Structures (2008). Vol. 86 (9), pp. 879-896; doi: 10.1016/j.compstruc.2007.04.009

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

  • C. Recarey Morfa, M. Farias, I. Pérez, E. Oñate
    Comp. Part. Mech (2018). Vol. 5 (2), pp. 213-226; doi: 10.1007/s40571-017-0164-5

    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 [...]

  • Computers and Structures (1983). Vol. 17 (3), pp. 407-426; doi: 10.1016/0045-7949(83)90133-5

    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 [...]

  • C. Feng, S. Li, E. Oñate
    Engineering Computations (2015). Vol. 32 (4), pp. 1080-1103; doi: 10.1108/EC-04-2014-0095

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

  • Computers and Structures (1999). Vol. 70 (6), pp. 635-646; doi: 10.1016/S0045-7949(98)00165-5

    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 [...]

  • E. Haug, R. Löhner, C. Zinggerling, E. Oñate
    Comp. Part. Mech (2018). Vol. 5 (1), pp. 71-86; doi: 10.1007/s40571-016-0154-z

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

  • Int. J. Solids and Structures (1996). Vol. 33 (17), pp. 2501-2518; doi: 10.1016/0020-7683(95)00161-1

    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 (5), pp. 647-673; doi: 10.1016/0020-7683(95)00056-G

    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 [...]

  • Rapid Prototyping Journal (1995). Vol. 1 (2), pp. 13-23; doi: 10.1108/13552549510086835

    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 [...]

  • R. Löhner, E. Oñate
    Commun. Numer. Meth. Engng (1998). Vol. 14 (12), pp. 1097-1108; doi: 10.1002/(SICI)1099-0887(199812)14:12<1097::AID-CNM183>3.0.CO;2-7

    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 [...]

  • S. Oller, E. Oñate, J. Canet
    Commun. Numer. Meth. Engng (1996). Vol. 12 (8), pp. 471-482; doi: 10.1002/(SICI)1099-0887(199608)12:8<471::AID-CNM995>3.0.CO;2-6

    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 [...]

  • Commun. Numer. Meth. Engng (1995). Vol. 11 (2), pp. 137-148; doi: 10.1002/cnm.1640110207

    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. Alarcón, E. Alonso, D. Aubry, K. Axelsson, E. Oñate
    Int. J. Numer. Meth. Engng. (1988). Vol. 26 (11), pp. 2559-2568; doi: 10.1002/nme.1620261113

    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 [...]

  • O. Zienkiewicz, E. Oñate, J. Heinrich
    Int. J. Numer. Meth. Engng. (1981). Vol. 17 (10), pp. 1497-1514; doi: 10.1002/nme.1620171005

    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 [...]

  • Comput. Methods Appl. Mech. Engrg., (2015). Vol. 293, pp. 191-206; 10.1016/j.cma.2013.12.009

    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; doi: 10.1016/j.cma.2005.07.020

    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 [...]

  • P. Fuentes, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2010). vol. 199, pp. 383–391; doi: https://doi.org/10.1016/j.cma.2009.01.006

    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 [...]

  • Int. J. Numer. Meth. Engng. (1988). Vol. 25 (1), pp. 227-251; doi: 10.1002/nme.1620250118

    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. [...]

  • Comput. Methods Appl. Mech. Engrg., (2000). Vol. 182 (3-4), pp. 355-370; doi: 10.1016/S0045-7825(99)00198-X

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

  • E. Oñate, O. Zienkiewicz, B. Suarez, R. Taylor
    Int. J. Numer. Meth. Engng. (1992). Vol. 33 (2), pp. 345-367; doi: 10.1002/nme.1620330208

    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 [...]

  • B. Boroomand, M. Najjar, E. Oñate
    Computational Mechanics (2009). Vol. 44, pp. 173-190; doi: 10.1007/s00466-009-0363-x

    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 [...]

  • Int. J. Numer. Meth. Engng. (2012). Vol. 90 (12), pp. 1435-1451; doi: 10.1002/nme.3370

    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 [...]

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    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 [...]

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