• 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • J. Rojek, C. Labra, O. Su, E. Oñate
    Int. J. Solids and Structures (2012). Vol 49 (13), pp. 1497-1517; doi: 10.1016/j.ijsolstr.2012.02.032

    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 [...]

  • E. Car, F. Zalamea, S. Oller, J. Canet, E. Oñate
    Int. J. Solids and Structures (2002). Vol. 39 (7), pp. 1967-1986; doi: 10.1016/S0020-7683(01)00240-2

    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 [...]

  • 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 [...]

  • 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 (20-22), pp. 3179-3186; doi: 10.1016/0020-7683(95)00248-0

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

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

    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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • C. Recarey Morfa, L. Cortés, M. Farias, I. Pérez, R. Valera, E. Oñate
    Comp. Part. Mech (2018). Vol. 5 (3), pp. 319-334; 10.1007/s40571-017-0171-6

    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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • Eugenio Oñate's Journal Papers (2019). 1

    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 [...]

  • A. Rodríguez-Ferran, A. Huerta
    Monograph CIMNE (1994). M26

    Abstract
    An object-oriented code, CASTEM2000, has provided the framework for algorithmic development and numerical testing. In these codes, information is stored and manipulated as [...]

  • Computers and Structures (2016). Vol. 177, pp. 126-140; doi: 10.1016/j.compstruc.2016.09.007

    Abstract
    We propose here a numerical model for a three-dimensional simulation of glass forming processes. Using the basic philosophy of the Particle Finite Element method (PFEM), we [...]

  • 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 [...]

  • 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 [...]

  • J. Miquel, E. Oñate, C. Garino, S. Botello, F. Flores, J. Rojek
    Monograph CIMNE (1994). M25

    Abstract
    El trabajo que se expone ha hecho uso de los últimos avances en mecánica computacional, métodos numéricos, visualización y algoritmos de [...]

  • L. Jané, A. Barbat
    Monograph CIMNE (1992). M13

  • Monograph CIMNE (1991). M9

    Abstract
    En los últimos años se han desarrollado diversas técnicas para resolver el problema de la estimación y la corrección del error. De hecho, [...]

  • Monograph CIMNE (1991). M10

    Abstract
    La presente monografía trata el problema del comportamiento de los materiales friccionales, especialmente del hormigón, más allá de su límite [...]

  • Monograph CIMNE (1993). M14

    Abstract
    In this work we present several finite element techniques to solve the convection-diffusion equation when the Péclet number is high, tha is, when diffusion is very [...]

  • A. Fusco
    Monograph CIMNE (1993). M20

    Abstract
    This work presents the fundamental assumptions and the successive mathematical developments which allow to establish the complete field equations of a continuum. The aim is [...]

  • J. Oliver
    Monograph CIMNE (1993). M15

    Abstract
    En este trabajo, se presenta una perspectiva general de los modelos de fisuración existentes y de algunas aportaciones de la línea de investigación que [...]

  • 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 [...]

  • 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 [...]

  • Monograph CIMNE (1991). M7

    Abstract
    This monograph presents 4 lectures on non linear analysis of concrete shells by the finite element method. The lectures were prepared by the author for the course on "Non [...]

  • J. Canet, E. Oñate, J. Buil, E. Herrero
    Monograph CIMNE (1991). M5

    Abstract
    Se desarrolla en este trabajo un estudio numérico-experimental acerca del comportamiento dinámico de las presas bóvedas considerando su interacción [...]

  • M. Cervera, J. Oliver, M. Galindo
    Monograph CIMNE (1991). M4

  • 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, [...]

  • 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 (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, [...]

  • R. Scotta, R. Vitaliani, A. Saetta, E. Oñate, A. Hanganu
    Computers and Structures (2001). Vol. 79 (7), pp. 737-755; doi: 10.1016/S0045-7949(00)00178-4

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

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

  • O. Zienkiewicz, R. Taylor, P. Papadopoulos, E. Oñate
    Computers and Structures (1990). Vol. 35 (4), pp. 505-522; doi: 10.1016/0045-7949(90)90072-A

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

  • J. 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 [...]

  • 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 [...]

  • 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) [...]

  • F. Flores, E. Ortega, E. Oñate
    Papers Repository of the International Centre for Numerical Methods in Engineering (CIMNE) (2019). 19

    Abstract
    Purpose   – The purpose of this paper is to describe a set of simple yet effective, numerical method for the design and evaluation of parachute-payload [...]

  • 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 [...]

  • E. Oñate, P. Cendonya, J. Canet
    Engineering Computations (2002). Vol. 19 (5-6), pp. 662-706; doi: 10.1108/02644400210439119

    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. [...]

  • 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 [...]

  • 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 [...]

  • H. Tschöpe, P. Wriggers, E. Oñate
    Papers Repository of the International Centre for Numerical Methods in Engineering (CIMNE) (2019). 29

    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 [...]

  • 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 [...]

  • 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 [...]

  • Engineering Computations (1995). Vol. 12 (3), pp. 245-262; doi: 10.1108/02644409510799587

    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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • E. Oñate, 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 [...]

  • B. Suarez, J. Canet, E. Oñate
    Engineering Computations (1988). Vol. 5 (2), pp. 158-164; doi: 10.1108/eb023734

    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 [...]

  • Engineering Computations (1988). Vol. 5 (4), pp. 309-319; doi: 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 [...]

  • 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 [...]

  • M. Celigueta, S. Latorre, F. Garcia, E. Oñate
    Computational Mechanics (2017). Vol. 60 (6), pp. 997-1010; doi: 10.1007/s00466-017-1453-9

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

  • 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. 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 [...]

  • 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 [...]

  • Computational Mechanics (2015). Vol. 55 (6), pp. 1091-1104; 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) [...]

  • 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 [...]