Enviaments recents

  • Data-based models for the prediction of dam behaviour: a review and some methodological considerations 

    Salazar González, Fernando; Morán Moya, Rafael; Toledo Municio, Miguel Ángel; Oñate Ibáñez de Navarra, Eugenio (2017-01)
    Article
    Accés restringit per política de l'editorial
    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 with the actual measurements to draw conclusions ...
  • A FIC-based stabilized finite element formulation for turbulent flows 

    Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio (2016-11-21)
    Article
    Accés obert
    We present a new stabilized finite element (FEM) formulation for incompressible flows based on the Finite Increment Calculus (FIC) framework. In comparison to existing FIC approaches for fluids, this formulation involves ...
  • Time domain simulation of coupled sloshing-seakeeping problems by SPH-FEM coupling 

    Serván Camas, Borja; Cercós Pita, J. L.; Colom Cobb, J.; García Espinosa, Julio; Souto Iglesias, Antonio (2016-09-01)
    Article
    Accés obert
    The aim of this work is to carry out numerical simulations in the time domain of seakeeping problems taking into account internal flow in tanks, including sloshing. To this aim, a Smooth Particle Hydrodynamics (SPH) solver ...
  • Velocity-based formulations for standard and quasi-incompressible hypoelastic-plastic solids 

    Franci, Alessandro; Oñate Ibáñez de Navarra, Eugenio; Carbonell Puigbó, Josep Maria (John Wiley & Sons, 2016-09)
    Article
    Accés restringit per política de l'editorial
    We present three velocity-based updated Lagrangian formulations for standard and quasi-incompressible hypoelastic-plastic solids. Three low-order finite elements are derived and tested for non-linear solid mechanics problems. ...
  • A hierarchical finite element for composite laminated beams using a refined zigzag theory 

    Nallim, Liz G.; Oller Martínez, Sergio Horacio; Oñate Ibáñez de Navarra, Eugenio; Flores, Fernando Gabriel (2017-03)
    Article
    Accés restringit per política de l'editorial
    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 one dimensional type “p” finite element is ...
  • A FIC-based stabilized mixed finite element method with equal order interpolation for solid–pore fluid interaction problems 

    Pouplana Sarda, Ignasi de; Oñate Ibáñez de Navarra, Eugenio (2017-01)
    Article
    Accés restringit per política de l'editorial
    A new mixed displacement-pressure element for solving solid–pore fluid interaction problems is presented. In the resulting coupled system of equations, the balance of momentum equation remains unaltered, while the mass ...
  • Surface tension problems solved with the particle finite element method using large time-steps 

    Gimenez, Juan M.; Nigro, Norberto; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (Elsevier, 2016-12)
    Article
    Accés restringit per política de l'editorial
    In previous works [S. R. Idelsohn, J. Marti, P. Becker, E. Oñate, Analysis of multifluid flows with large time steps using the particle finite element method, International Journal for Numerical Methods in Fluids 75 (9) ...
  • Lagrangian finite element model for the 3D simulation of glass forming processes 

    Ryzhakov, Pavel; García Espinosa, Julio; Oñate Ibáñez de Navarra, Eugenio (2016-12)
    Article
    Accés restringit per política de l'editorial
    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 introduce several new features adapting the ...
  • The Double Hierarchy Method: a parallel 3D contact method for the interaction of spherical particles with rigid FE boundaries using the DEM 

    Santasusana, Miquel; Irazábal González, Joaquín; Oñate Ibáñez de Navarra, Eugenio; Carbonell Puigbó, Josep Maria (Springer, 2016-07)
    Article
    Accés restringit per política de l'editorial
    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 present in most of large-scale simulations. The ...
  • Interpretation of dam deformation and leakage with boosted regression trees 

    Salazar González, Fernando; Toledo Municio, Miguel Ángel; Oñate Ibáñez de Navarra, Eugenio; Suárez Arroyo, Benjamín (2016-07)
    Article
    Accés restringit per política de l'editorial
    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 tools are well known to have limitations in ...

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