• (2014). Vol. 74 pp. 699-731 (preprint), DOI 10.1002/fld.3870

    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
    (2017). (preprint), DOI 10.1007/s00466-017-1453-9

    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
    (2017). (preprint), DOI 10.1016/j.cma.2017.08.012

    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
    (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 [...]

  • (2016). Vol. 3 pp. 14 (preprint)

    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 [...]

  • (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 [...]

  • (2016). Vol. 107(11) pp. 970-990 (preprint)

    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
    (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
    (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
    (2015). 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
    (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
    (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 [...]

  • P. Becker, S. Idelsohn, E. Oñate
    (2015). Vol. 55(6) pp. 1091-1104 (preprint)

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

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

    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
    (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
    (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
    (2014). Vol. 1 pp. 85-102 (preprint)

    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 [...]

  • (2014). Vol. 54 pp. 85-107 (preprint)

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

  • (2014). Vol. 54(6) pp. 1583-1596 (preprint)

    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 [...]

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

    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
    (2014). Vol. 74(2) pp. 872-897 (preprint)

    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; 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 [...]

  • S. Idelsohn, E. Oñate, F. Pin, N. Calvo
    Comput. Meth. Appl. Mech. Engng. (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 [...]

  • F. Kempel, B. Schartel, J. Marti, K. Butler, R. Rossi, S. Idelsohn, E. Oñate
    Papers Repository of the International Centre for Numerical Methods in Engineering (CIMNE) (2018). 21

    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 [...]

  • 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 [...]

  • 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 [...]

  • Comput. Meth. Appl. Mech. Engng. (2006). Vol. 195, pp. 339-200; 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 [...]

  • 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 [...]

  • 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 [...]

  • Comput. Meth. Appl. Mech. Engng. (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 [...]

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

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

    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 [...]

  • E. Oñate, J. García, S. Idelsohn, F. Pin
    Comput. Meth. Appl. Mech. Engng. (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 [...]

  • Comput. Meth. Appl. Mech. Engng. (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. [...]

  • 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 [...]

  • E. Oñate, F. Flores
    Comput. Meth. Appl. Mech. Engng. (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., (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 [...]

  • Comput. Meth. Appl. Mech. Engng. (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. 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 [...]

  • E. Soudah, P. Rudenick, M. Bordone, D. García-Dorado, A. Evangelista, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (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, 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 [...]

  • G. Chiandussi, G. Bugeda, E. Oñate
    Published in 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 [...]

  • 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) [...]

  • 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 [...]

  • 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. (1996). 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, S. Idelsohn, O. Zienkiewicz, R. Taylor, C. Sacco
    Comput. Methods Appl. Mech. Engrg. (1996). Vol. 139 (1-4), pp. 315-346; doi: 10.1016/S0045-7825(96)01088-2

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

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

  • 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 [...]

  • 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. [...]

  • Comput. Meth. Appl. Mech. Engng. (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 [...]

  • 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 [...]

  • Comput. Methods Appl. Mech. Engrg. (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 [...]

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

  • 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 [...]

  • 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 [...]

  • K. Kamran, R. Rossi, E. Oñate
    Comput. Methods Appl. Mech. Engrg., (2015). Vol. 294, pp. 1-18; doi: 10.1016/j.cma.2015.05.017

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

  • 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 [...]

  • E. Oñate, J. Miquel, G. Hauke
    Comput. Meth. Appl. Mech. Engng. (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 [...]

information

    About this publication
    How to submit
    Open access
    Contact

Categories

Engineering, Civil

Engineering, Multidisciplinary

Engineering, Aerospace

Engineering, Manufacturing

Engineering, Marine

Engineering, Environmental

Engineering, Geological

Engineering, Industrial

Engineering, Petroleum