• A. Cornejo Velázquez, V. Mataix, P. Wriggers, L. Barbu, E. Oñate
    Computational Mechanics  (2023). Open Access, Online June, pp. 1-25

    Abstract
    We present a general framework for the analysis and modelling of frictional contact involving composite materials. The study has focused on composite materials formed by a [...]

  • R. Rangel, F. Kisuka, C. Hare, V. Vivacqua, A. Franci, E. Oñate, C. Wu
    Data in Brief (2023). Vol. 48, Art. 109282

    Abstract
    This paper provides experimental data on the temperature rise during granular flows in a small-scale rotating drum due to heat generation. All heat is believed to be generated [...]

  • R. Rangel, F. Kisuka, C. Hare, V. Vivacqua, A. Franci, E. Oñate, C. Wu
    Powder Technology (2023). Vol. 426, Art. 118619

    Abstract
    Granular flow is common in many industrial applications, and involves heat generation from frictional contacts and inelastic collisions between particles. The self-heating [...]

  • J. Marti, E. Oñate
    Computational Particle Mechanics (2023). Published Online

    Abstract
    This work presents an enhanced version of the semi-explicit particle finite element method for incompressible flow problems. This goal is achieved by improving the methodology [...]

  • I. Pouplana, S. Latorre, M. Maso, C. Alonso, E. Pérez, X. Guinart, I. Hernández, X. Baulies, E. Oñate
    Atmospheric Pollution Research (2023). Vol. 14 (2), 101668

    Abstract
    We present a new 2.5D model for predicting the concentration of nitrogen dioxide (NO2) at street level in an urban area. This work develops the first prototype of a tool that [...]

  • W. Düsterhöft-Wriggers, A. LARESE, E. Oñate, R. Thomas
    Experimental and Computational Multiphase Flow (2023). Vol. 5, pp. 159–177

    Abstract
    In many applications, free surface flow through rigid porous media has to be modeled. Examples refer to coastal engineering applications as well as geotechnical or biomedical [...]

  • Development and coupling of numerical techniques for modeling micromechanical discrete and continuous media using real particle morphologies

    R. Valera, J. Irazábal González, M. Junior, M. Muniz, M. Castro, R. Martínez, J. Pena, L. Moreno, C. Recarey, E. Oñate
    Computational Particle Mechanics (2023). Vol.10 (1), pp. 121-141

    Abstract
    The main objective of this research is to formulate and couple technologies for modeling discrete and continuous media using real particle morphologies. To that end, two coupled [...]

    • 3
  • J. Marti, E. Oñate
    Computational Mechanics (2022). Vol. 70, pp. 607–620

    Abstract
    In this paper an enhanced version of the semi-explicit Particle Finite Element Method for incompressible flow problems is presented. This goal is achieved by improving the [...]

  • S. Idelsohn, J. Gimenez, R. Lohner, E. Oñate
    Computer Methods in Applied Mechanics and Engineering (2022). Volume 401, Part A, 115174

    Abstract
    The methodology previously proposed by the authors to solve particle-laden turbulent flows through a multiscale approach is extended by introducing a continuous function for [...]

  • R. Lohner, H. Antil, J. Gimenez, S. Idelsohn, E. Oñate
    Computer Methods in Applied Mechanics and Engineering (2022). Volume 401, Part A, 114929

    Abstract
    A deterministic pathogen transmission model based on high-fidelity physics has been developed. The model combines computational fluid dynamics and computational [...]

  • Advanced Modeling and Simulation in Engineering Sciences (2022). Vol. 9(1), Article 15, 2022

    Abstract
    This work presents a partitioned method for landslide-generated wave events. The proposed strategy combines a Lagrangian Navier Stokes multi-fluid solver with an Eulerian [...]

  • Computer Methods in Applied Mechanics and Engineering (2022). Vol. 400,115543

    Abstract
    A new energy-dissipation-based rate-independent constitutive law within the framework of elastoplasticity coupled with damage is proposed. With this methodology, the inelastic [...]

  • Computer Methods in Applied Mechanics and Engineering (2022). Available online 14 July, 115332

    Abstract
    We present an explicit integration scheme for solving the transient heat conduction equation that allows larger time steps than the standard forward Euler scheme. The derivation [...]

  • J. Gonzalez, J. Marcipar, C. Estruch, E. Oñate
    Structural Engineering International (2022). pp. 1-5

    Abstract
    Buildair S.A. has recently designed, manufactured and built an inflatable hangar (termed H75 hangar) for the aeronautic industry in Jeddah Airport (Kingdom of Saudi Arabia). [...]

  • Journal of Fluids and Structures (2019). Vol. 90, pp. 230-245

    Abstract
    An efficient method for the aeroelastic analysis of wind effects on inflatable structures is presented. The solution scheme is staggered and uses an explicit finite-element [...]

  • Int. J. for Num. Meths. in Fluids (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 [...]

  • Int. J. for 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 [...]

  • 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 (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. [...]

  • Computer Methods in Applied Mechanics and Engineering (2016). 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 (preprint)

    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 (preprint)

    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 (2014). 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

    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

    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
    Computational Particle Mechanics (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

    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

    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

    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 [...]

  • 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 [...]

  • F. Zarate, A. Gomez, E. Oñate
    Rev. int. métodos numér. cálc. diseño ing. (2019). Vol. 35, (1), 14

    Abstract
    This paper describes a computation methodology to evaluate the ultimate strength and fracture of concrete samples and structures and its application to four typical tests [...]

  • 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 [...]

  • J. Giménez, N. Nigro, S. Idelsohn, E. Oñate
    Computers and Fluids (2016). (preprint) 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 [...]

  • Rev. int. métodos numér. cálc. diseño ing. (2019). Vol. 35, (4), 47

    Abstract
    Within this paper we discuss a numerical strategy to solve the elasticity problem upon unstructured and non conforming meshes, allowing all kinds of flat-faced elements (polygons [...]

  • 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. [...]

  • Engineering Structures (2016). (Preprint) Vol. 119, pp. 230-251

    Abstract
    Predictive models are essential in dam safety assessment. They have been traditionally based on simple statistical tools such as the hydrostatic-season-time (HST) model. These [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • International Journal of Computational Methods (2004). Vol. 1 (2), pp. 267-307

    Abstract
    We present a general formulation for analysis of fluid-structure interaction problems using the particle finite element method (PFEM). The key feature of the PFEM is the use [...]

  • 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) [...]

  • F. Salazar, E. Oñate, R. Morán
    Rev. int. métodos numér. cálc. diseño ing. (2012). Vol. 28, (2)

    Abstract
    The paper presents the results of the application of the Particle Finite Element Method (PFEM) to the analysis of landslides in reservoirs. This is a complex phenomenon, because [...]

  • 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 [...]

  • A. Cornejo, V. Mataix, F. Zarate, E. Oñate
    Computational Particle Mechanics (2020). Vol. 7, pp. 735–752, doi: 10.1007/s40571-019-00306-4

    Abstract
    This paper presents an enhanced coupled approach between the Finite Element Method (FEM) and the Discrete Element Method (DEM) in which an adaptative remeshing technique has [...]

  • 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 [...]

  • 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 [...]

  • 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. Vargas, E. Oñate, S. Oller
    Rev. int. métodos numér. cálc. diseño ing. (2014). Vol. 30, (4)

    Abstract
    In this paper we derive the field of displacements and strains for thin-walled open composite beams with composite laminated material including in their kinematics flexural [...]

  • 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. [...]

  • M. Celigueta, S. Latorre, F. Arrufat, E. Oñate
    Computational Particle Mechanics (2020). Vol. 7, pp. 543–553, 10.1007/s40571-019-00278-5

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

  • 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 [...]

  • 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 [...]

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

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

  • 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 [...]

  • 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. 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 [...]

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

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

  • F. Flores, E. Oñate
    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 [...]

  • J. Pons-Prats, G. Bugeda, F. Zárate, E. Oñate
    Rev. int. métodos numér. cálc. diseño ing. (2012). Vol. 28, (1)

    Abstract
    Uncertainties are a daily issue to deal with in aerospace engineering and applications. Robust optimization methods commonly use a random generation of the inputs and take [...]

  • A. Puigferrat, I. de-Pouplana, E. Oñate
    Computer Methods in Applied Mechanics and Engineering (2020). Vol 365, pp. 112984, DOI: 10.1016/j.cma.2020.112984

    Abstract
    In this paper we present a stabilized FIC-FEM formulation for the multidimensional transient advection-diffusion-absorption equation. The starting point is the non-local form [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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. 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • Journal of Applied Mechanics (2003). 70(1): 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 [...]

  • F. Muñoz, J. Mora-Serrano, I. Valero, E. Oñate
    Archives of Computational Methods in Engineering (2021). Vol. 28, pp. 689–711

    Abstract
    The construction industry has traditionally been characterised by the high diversity of its agents and processes, high resistance to change and low incorporation of technology [...]

  • 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 [...]

  • 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 [...]

  • 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, J. Miquel, F. Zárate
    Computers and Fluids (2007). Vol. 36 (1), pp. 92-112, 2007

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

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • R. Rossi, S. Idelsohn, E. Oñate, J. Cotela, F. Pin
    Rev. int. métodos numér. cálc. diseño ing. (2011). Vol. 27, (3)

    Abstract
    La interacción de los fluidos con las estructuras de su entorno es un desafío clásico para las técnicas numéricas. El objetivo de este trabajo es doble: en primer lugar [...]

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

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

  • F. Flores, E. Oñate
    Rev. int. métodos numér. cálc. diseño ing. (2011). Vol. 27, (4)

    Abstract
    In this work a solid finite element based on a Total Lagrangian Formulation using logarithmic strains is combined with a classical assumed strain approach of the transverse [...]

  • 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 [...]

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

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

  • 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 [...]

  • 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 [...]

  • R. Lohner, H. Antil, S. Idelsohn, E. Oñate
    Computational Mechanics (2020). 10.1007/s00466-020-01881-7

    Abstract
    A summary is given of the mechanical characteristics of virus contaminants and the transmission via droplets and aerosols. The ordinary and partial differential equations [...]

  • J. Ródenas, G. Bugeda, J. Albelda, E. Oñate, E. Nadal
    Rev. int. métodos numér. cálc. diseño ing. (2012). Vol. 28, (1)

    Abstract
    This work analyzes the influence of the discretization error contained in the Finite Element (FE) analyses of each design configuration proposed by the structural shape optimization [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • J. Rojek, E. Oñate, C. Labra, H. Kargl
    Int. J. Rock Mechanics and Mining Sciences (2011). Vol. 48 (6), pp. 996-1010

    Abstract
    This paper presents numerical modelling of rock cutting processes. The model consists of a tool–rock system. The rock is modelled using the discrete element method, [...]

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

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

  • M. López-Rodríguez, J. García-Espinosa, E. Oñate
    Ingeniería Naval (2001). Vol. 784, pp. 122-130

    Abstract
    En la actualidad las más avanzadas técnicas para diseño naval ya no se restringen sólo a proyectos de alto coste; si no que también ahora [...]

  • 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. (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 [...]

  • 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 [...]

  • 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 [...]

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

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

  • 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, [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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, 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. 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • J. García-Espinosa, E. Oñate, J. Helmers, M. Chakkor
    Revista de Ingeniería Naval (2004). Vol. 814, pp. 104-108

    Abstract
    In the present work a novel approach has been developed for the resolution of this problem of analysis of the movement of roll of a ship. The methodology used for this is [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

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

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

  • Int. J. Numer. Meth. Fluids (2011). 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

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

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

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

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

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • International Journal for Numerical Methods in Fluids (2008). 57 (9), 1291-1320, 2008

    Abstract
    For residual-based stabilization methods such as streamline-upwind Petrov–Galerkin (SUPG) and finite calculus (FIC), the higher-order derivatives of the residual that [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • International journal for numerical methods in fluids (2007). 54 (6‐8), 609-637, 2007

    Abstract
    We present a formulation for analysis of turbulent incompressible flows using a stabilized finite element method (FEM) based on the finite calculus (FIC) procedure. The stabilization [...]

  • A. Franci, M. Cremonesi, U. Perego, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2020). Vol. 361, 112816

    Abstract
    We present a Lagrangian nodal integration method for the simulation of Newtonian and non-Newtonian free-surface fluid flows. The proposed nodal Lagrangian method uses a finite [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • Ocean Engng. (2013). Vol. 66, pp. 92-100

    Abstract
    In this paper the Particle Finite Element Method (PFEM) is applied to the simulation of the sea-landing of an unmanned aerial vehicle (UAV). The problem of interest consists [...]

  • A. Barbat, M. Cervera, A. Hanganu, C. Cirauqui, E. Oñate
    Nuclear Engineering and Design (1998). 180, 251 – 270

    Abstract
    The evaluation of the failure pressure of the containment building of a large dry PWR-W three loops nuclear power plant, based on computer numerical simulation, is described [...]

  • A. Geyer, J. Phillips, M. Mier-Torrecilla, S. Idelsohn, E. Oñate
    Experiments in Fluids (2012). 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 [...]

  • 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 [...]

  • 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 [...]

  • W. Matias Silva, E. Oñate
    Rev. int. métodos numér. cálc. diseño ing. (1997). Vol. 13, (2)

    Abstract
    Se presenta una nueva técnica de predicción de puntos críticos en el análisis de inestabilidad estructural por el MEF. El procedimiento se basa [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

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

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

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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. [...]

  • 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 [...]

  • C. Recarey Morfa, E. Oñate, J. Rojek, J. Canet, F. Zárate, G. Cadoce, C. Labra
    Ingeniería Civil (2005). Vol. 139, pp. 112-124

    Abstract
    Se presenta un modelo de elementos discretos o distintos (MED) en la modelizacion del ensayo de traccion indirecta o ensayo brasileno (Brazilian Test). Se realiza una comparacion [...]

  • E. Oñate, P. Cendonya, J. Canet
    Engineering Computations (2002). Vol. 19 (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. [...]

  • C. Felippa, E. Oñate, S. Idelsohn
    Archives of Comp. Meths. Engng. (2018). 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • E. Oñate, J. Carbonell
    Computational Mechanics (2014). Vol. 54 (6), pp. 1583-1596, 2014

    Abstract
    We present a mixed velocity-pressure finite element formulation for solving the updated Lagrangian equations for quasi and fully incompressible fluids. Details of the governing [...]

  • Journal of Computational Physics (2007). 224 (1), 332-351

    Abstract
    We present a formulation for incompressible flows analysis using the finite element method (FEM). The necessary stabilization for dealing with convective effects and the [...]

  • D. Capua, E. Oñate
    Rev. int. métodos numér. cálc. diseño ing. (2009). Vol. 25, (4)

    Abstract
    In this paper, a hygro-thermo-mechanical model for concrete exposed to fire, based in the mechanics of unsatured porous media of Coussy, is introduced. The model state variables [...]

  • A. Barbat, S. Oller, E. Oñate, A. Hanganu
    International Journal of Solids Structures (1997). 34(30), 3953-3976

    Abstract
    A local damage constitutive model based on Kachanov’s theory is used within a finite element frame and applied to the case of 2D and 3D Timoshenko beam elements. The [...]

  • 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 (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 [...]

  • 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, [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • P. Dadvand, R. Rossi, E. Oñate
    Archives of Comp. Meths. Engng. (2010). Vol. 17 (3), pp 253-297

    Abstract
    The objective of this work is to describe the design and implementation of a framework for building multi-disciplinary finite element programs. The main goals are generality, [...]

  • D. Lee, J. Periaux, L. González, E. Oñate, N. Qin
    Journal of Aircraft (2011). Vol. 48 (3) pp. 1084-1094

    Abstract
    The use of adaptive wing/aerofoil designs is being considered, as they are promising techniques in aeronautic/ aerospace since they can reduce aircraft emissions and improve [...]

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

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

  • B. 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 (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 [...]

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

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

  • 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 [...]

  • A. Franci, I. de-Pouplana, G. Casas, M. Celigueta, J. González-Usúa, E. Oñate
    Computational Particle Mechanics (2020). Vol. 7, pp. 101-120

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

  • 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. [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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. [...]

  • 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) [...]

  • 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 [...]

  • 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. 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 [...]

  • 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 [...]

  • 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 [...]

  • D. Lee, C. Morillo, S. Oller, G. Bugeda, E. Oñate
    Composite Structures (2013). Vol. 99, pp. 181-192

    Abstract
    Hybrid Composite Structures (HCSs) are consisting of alternating layers of Fiber-Reinforced Polymer and metal sheets. Mechanical properties and responses for off-design [...]

  • F. Flores, E. Ortega, E. Oñate
    Journal of Aircraft (2010). Vol. 47, pp. 708-714

    Abstract
    The present work is part of a broader investigation aimed at improving the understanding of the aerodynamics of the rear aircraft section. Complex flow phenomena (e.g., [...]

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

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

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

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

  • Computers and Structures (2016). 117, 126-140 (preprint)

    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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

  • 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, [...]

  • 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 [...]

  • 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 [...]

  • 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 [...]

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

    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, [...]

  • 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 [...]

  • C. Labra, J. Rojek, E. Oñate, F. Zárate
    Acta Geotechnica (2009). Vol. 3 (4), pp. 317-322

    Abstract
    The paper presents advances in the discrete element modelling of underground excavation processes extending modelling possibilities as well as increasing computational efficiency. [...]

  • Archives of Comp. Meths. Engng. (2017). Vol. 24 (1), pp. 1-21

    Abstract
    Predictive models are an important element in dam safety analysis. They provide an estimate of the dam response faced with a given load combination, which can be compared [...]

  • J. Rojek, E. Oñate
    Interaction and Multiscale Mechanics: An International Journal (IMMIJ) (2007). Vol. 1 (1), pp. 1-31

    Abstract
    The present paper presents multiscale modelling via coupling of the discrete and finite element methods. Theoretical formulation of the discrete element method using spherical [...]

  • L. Nallim, S. Oller, E. Oñate, F. Flores
    Composite Structures (2017). Vol. 163, pp. 168-184

    Abstract
    In this work a kinematics for laminated beams enriched with a refined formulation ZigZag (RZT), originally presented by Tessler et al. in 2007, introduced in a hierarchical [...]