• A simple method for automatic adaption of finite element meshes to changes in the boundary shape

    G. Chiandussi, G. Bugeda, E. Oñate
    (2001). Innovative Tools for Scientific Computation in Aeronautical Engineering, J. Periaux, P. Joly, O. Pironneau and E. Oñate (Eds.), pp. 149-167, CIMNE, Barcelona, Spain

    Abstract
    A simple method to automatically update the finite element mesh of the analysis domain is proposed for cases when the shape of the domain in modified. The method considers [...]

  • A finite element method for fluid-structure interaction with surface waves

    (2001). Trends in Computational Structural Mechanics. W. A. Wall, K.-U. Bletzinger and K. Schweizerhof (Eds.), CIMNE, Barcelona, Spain

    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 [...]

  • Meshless analysis of incompressible flows using the Finite Point Method

    (2001). Innovative Tools for Scientific Computation in Aeronautical Engineering, J. Periaux, P. Joly, O. Pironneau and E. Oñate (Eds.), pp. 208-232, CIMNE, Barcelona, Spain

    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 calculus [...]

  • Stabilization techniques for finite element analysis of convection-diffusion problems

    E. Oñate, M. Manzan
    (2000). Convection Heat Transfer, B. Sundén and G. Comini (Eds.), WIT Press, Southampton, United Kingdom

    Abstract
    The accurate solution of convection type problems on practical grids has been ever a challenging issue, and invariably some sort of stabilization is needed in order to get [...]

  • Stochastic analysis of an impact problem

    F. Zárate, J. Hurtado, E. Oñate
    (1999). I. Doltsinis (Ed.), CIMNE, Barcelona, Spain

  • Analysis of the structure of gothic cathedrals. Application to Barcelona cathedral

    P. Roca, L. Pellegrini, E. Oñate, A. Hanganu
    (1998). Structural Analysis of Historical Constructions II, P. Roca, J.L. González, E. Oñate and P. B. Lourenço(Eds.), CIMNE, Barcelona, Spain

    Abstract
    The study of ancient structures composed of stone arches and vaults requires the use of specific techniques of analysis endowed with powerful procedures for the modelling [...]

  • An alpha-adaptive approach for stabilized finite element solution of advective-diffusive problems with sharp gradients

    (1998). New Advances in Adaptive Computational Methods in Mechanics, P. Ladeveze and J.T. Oden (Eds.), Elsevier

    Abstract
    In this paper the FIC method is used as the basis for a new “alpha-adaptive” procedure (where alpha denotes the stabilization parameters) for obtaining stable [...]

  • Efficient computational aspects for analyses of sheet stamping problems

    G. Duffett, P. Cendonya, J. Rojek, E. Oñate
    (1997). Recent Developments in Computational and Applied Mechanics. A Book in Honour of John B. Martin, B. D. Reddy (Ed.), CIMNE

    Abstract
    Efficiency and accuracy are vital for the acceptable simulation of large scale industrial sheet stamping problems. Two aspects, implemented within the explicit dynamic program [...]

  • Structural analysis and durability assesment of historical constructions using a finite element damage model

    E. Oñate, A. Hanganu, A. Barbat, S. Oller, R. Vitaliani, A. Saetta, R. Scotta
    (1997). Structural Analysis of Historical Constructions I, P. Roca, J.L. González, A.R. Marí and E. Oñate (Eds.), CIMNE, Barcelona, Spain

  • Prediction of elastic springback deffects in sheet stamping processes using finite element methods

    E. Oñate, J. Rojek
    (1997). Advanced Methods in Materials Processing Defects, Elsevier

    Abstract
    Undesiderable spring-back induced deformations are one of the cause for rejection of many stamped sheet parts. The paper presents the alternatives for predicting spring-back [...]

  • Possibilities of parallel computing in the finite element analysis of industrial forming processes

    (1997). Vector and Parallel Processing - VECPAR'96, Palma J.M.L.M., Dongarra J. (eds) Vector and Parallel Processing — VECPAR'96. VECPAR Lecture Notes in Computer Science, vol. 1215, pp 258-294, Springer, Berlin, Heidelberg

    Abstract
    The paper presents an overview of the possibilities of parallel computing for the analysis of industrial forming processes using the finite element method. The theoretical [...]

  • Enhanced prediction of structural instability points using a critical displacement method

    (1995). Advances in Finite Element Technology, N.-E. Wiberg (Ed.), CIMNE, Barcelona

  • A review of some finite element families for thick and thin plate and shell analysis

    (1994). Recent Developments in Finite Element Analysis, Hughes J., Oñate E. and Zienkiewicz O. (Eds.), CIMNE, Barcelona

    Abstract
    This paper describes a number of triangular and quadrilateral plate and Shell elements derived via Reissner-Mindlin plate theory and mixed interpolation. It shown how by introducing [...]

  • Finite elements versus finite volumes. Is there really a choice?

    O. Zienkiewicz, E. Oñate
    (1992). Non linear computational mechanics. State of the art. P. Wriggers,R. Wagner and E. Stein (eds.), Chapter IV, Beam, Plate and Shell Formulations, pp. 240-254, Springer Verlag

    Abstract
    The finite volume method appears to be a particular case of finite elements with a non Galerkin weighting. It is course less accurate for self adjoint problems but has some [...]

  • Numerical modelling of sheet metal forming problems

    (1991). Numerical Modelling of Material Deformations Processes, C. Sturgess et al (Eds.), Springer Verlag, London

    Abstract
    Stamping of sheet-metal parts by means of punches and dies is a standard manufacturing process. However, despite its broad application in industry, the design of forming processes [...]

  • Finite Streifenmethode für Mindlinsche Platten und axialsymmetrische Schalen

    E. Oñate, B. Suárez, E. Hinton
    (1990). Finite Elemente Programme für Platten und Schalen, Springer-Verlag, Berlin, Germany

    Abstract
    Viele Konstruktionen besitzen konstante geometrische Eigenschaften entlang einer bestimmten Richtung. Derartige prismatische Strukturen sind bei Platten weit verbreitet, bei [...]

  • Adaptive Mesh Refinement Techniques for Structural Problems

    E. Oñate, J. Castro
    (1990). The Finite Element Method in the 1990's, E. Oñate et al (Eds.), CIMNE/Springer Verlag

    Abstract
    In this paper some adaptive mesh refinement (AMR) strategies for finite element analysis of structural problems are discussed. Two mesh optimality criteria based on the equal [...]

  • Fractura elastoplástica: Modelos elastoplásticos para la simulación numérica de procesos de fractura

    J. Oliver, S. Oller, E. Oñate
    (1988). Métodos Numéricos Aplicados a la Mecánica de Fractura, J. Oliver et al (Eds.), CIMNE, Barcelona, pp. 27-60

  • A finite element formulation for the geometrically non linear analysis of shells using a total lagrangian approach

    J. Oliver, E. Oñate
    (1988). Computational Methods for Non Linear Problems, C. Taylor (Ed.) Pineridge Press, pp. 29-55

    Abstract
    A total Lagrangian formulation for the large displacement large rotation: analysis of shells using finite elements is presented. Different expressions for the strain matrix [...]

  • Finite element analysis of sheet metal forming problems using a viscous voided shell formulation

    (1988). Modelling of Metal Forming Processes, J.L. Chenot y E. Oñate (Eds.), Kluwer Academic Publisher, pp. 163-178

    Abstract
    A formal analogy between the equations of pure plastic and viscoplastic flow theory for void containing metals and those of standard non linear elasticity is presented. It [...]

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