Now showing items 1-20 of 395

    • 2D particle contact-based meshfree method in CDEM and its application in geotechnical problems 

      Chun, Feng; Li, Shi-hai; Oñate Ibáñez de Navarra, Eugenio (2015)
      Article
      Restricted access - publisher's policy
      Continuum-based discrete element method is an explicit numerical method, which is a combination of block discrete element method (DEM) and FEM. When simulating large deformation problems, such as cutting, blasting, water-like ...
    • 3D finite element computations for viscous aerodynamic flows around automobiles 

      Fischer, Thomas B.; Miquel Canet, Juan; Fruitós Bickham, Óscar Alejandro; Oñate Ibáñez de Navarra, Eugenio (1994-05)
      Research report
      Open Access
    • 3D simulation of Vajont disaster. Part 1: numerical formulation and validation 

      Franci, Alessandro; Cremonesi, Massimiliano; Perego, Umberto; Crosta, Giovanni Battista; Oñate Ibáñez de Navarra, Eugenio (2020-12)
      Article
      Open Access
      This work presents a numerical method for the simulation of landslides generated impulse waves and its application to the historical Vajont case study. The computational tool is based on the Particle Finite Element Method ...
    • 3D simulation of Vajont disaster. Part 2: multi-failure scenarios 

      Franci, Alessandro; Cremonesi, Massimiliano; Perego, Umberto; Oñate Ibáñez de Navarra, Eugenio; Crosta, Giovanni Battista (2020-12)
      Article
      Open Access
      Prediction of multi-hazard slope stability events requires an informed and judicious choice of the possible scenarios. An incorrect definition of landslide conditions in terms of expected failure volume, material behavior, ...
    • A 3D low-order panel method for unsteady aerodynamic problems 

      Ortega, Enrique; Flores Le Roux, Roberto Maurice; Oñate Ibáñez de Navarra, Eugenio (2010)
      Research report
      Open Access
      An unsteady low-order panel method for three-dimensional subsonic analyses is presented. The method, which is based on well-established techniques in computational aerodynamics, is intended to achieve a cost-effective ...
    • A bonded discrete element method for modeling ship–ice interactions in broken and unbroken sea ice fields 

      Jou Devesa, Oriol; Celigueta Jordana, Miguel Ángel; Latorre Sánchez, Juan Salvador; Arrufat Garcia, Ferran; Oñate Ibáñez de Navarra, Eugenio (Springer, 2019-10)
      Article
      Open Access
      This work investigates the failure patterns of ice cakes and floe-ice when loaded by a moving and sloping structure (ice-breaking ships and cones). In the paper, we introduce the most frequently encountered ice-infested ...
    • A compressible Lagrangian framework for the simulation of the underwater implosion of large air bubbles 

      Kamran, Kamran; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2013-03)
      Article
      Restricted access - publisher's policy
      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 and the equations for the Lagrangian shock ...
    • A compressible Lagrangian framework for the simulation of underwater implosion problems 

      Kamran, Kazem; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Rossi, Riccardo (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013)
      Book
      Open Access
      The development of efficient algorithms to understand implosion dynamics presents a number of challenges. The foremost challenge is to efficiently represent the coupled compressible fluid dynamics of internal air and ...
    • A computational model for progressive cracking in large dams due to the swelling of concrete 

      Cervera Ruiz, Miguel; Oliver Segura, José; Herrero, E.; Oñate Ibáñez de Navarra, Eugenio (1990-09)
      Article
      Open Access
      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 operating concrete dams that the combined effects ...
    • A computational model for the evaluation of the spray generation of a wave adaptive modular vessel 

      García Espinosa, Julio; Oñate Ibáñez de Navarra, Eugenio; Serván Camas, Borja; Nadukandi, Prashanth; Becker, Pablo Agustín (2016)
      Conference report
      Open Access
      This paper presents part of the work done within the project ‘Advanced Numerical Simulation and Performance Evaluation of WAM-V ® in Spray Generating Conditions’ developed by the International Center for Numerical Methods ...
    • A contact algorithm for shell problems via Delaunay-based meshing of the contact domain 

      Kamran, Kamran; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio (2013-07)
      Article
      Restricted access - publisher's policy
      The simulation of the contact within shells, with all of its different facets, represents still an open challenge in Computational Mechanics. Despite the effort spent in the development of techniques for the simulation of ...
    • A contribution to adaptive numerical solution of compressible flow problems 

      Fischer, Thomas B.; Oñate Ibáñez de Navarra, Eugenio (International Centre for Numerical Methods in Engineering (CIMNE), 1996)
      Book
      Open Access
      The monograph presents recent developments on the solution of high speed compressible flow problems using finite element and finite point (meshless) methods with adaptive refinement, techniques. This work treats two of the ...
    • A coupled Eulerian-PFEM model for the simulation of overtopping in rockfill dams 

      Larese De Tetto, Antonia; Oñate Ibáñez de Navarra, Eugenio; Rossi, Riccardo (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2012)
      Book
      Open Access
    • A coupled fluid FEM-DEM technique for predicting blasting operations in tunnels 

      Zárate Araiza, José Francisco; González Lopez, Jose Manuel; Miquel Canet, Juan; Löhner, Rainald; Oñate Ibáñez de Navarra, Eugenio (2018-12)
      Article
      Open Access
      We present recent developments in the coupling of the finite element method (FEM) and the discrete element method (DEM) for the analysis of rock blasting operations in tunnels. The coupled FEM-DEM technique has been proven ...
    • A FEM fluid-structure interaction algorithm for analysis of the seal dynamics of a Surface-Effect Ship 

      García Espinosa, Julio; Capua, Daniel di; Serván Camas, Borja; Ubach de Fuentes, Pere-Andreu; Oñate Ibáñez de Navarra, Eugenio (2015-10)
      Article
      Open Access
      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 developed for this purpose, uses a potential flow ...
    • A FEM-DEM technique for studying the motion of particles in non-Newtonian fluids: application to the transport of drill cuttings in wellbores 

      Celigueta Jordana, Miguel Ángel; Deshpande, Kedar M.; Latorre, Salvador; Oñate Ibáñez de Navarra, Eugenio (Springer, 2015-11)
      Article
      Open Access
      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. Particles are assumed to be spherical and immersed ...
    • A FIC-based stabilized finite element formulation for turbulent flows 

      Cotela Dalmau, Jordi; Rossi, Riccardo; Oñate Ibáñez de Navarra, Eugenio (2017-03)
      Article
      Open Access
      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 ...
    • 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
      Open Access
      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 ...
    • A FIC-FEM procedure for the shallow water equations over partially wet domains 

      Maso Sotomayor, Miguel; de-Pouplana, Ignasi; Oñate Ibáñez de Navarra, Eugenio (2022-02-01)
      Article
      Open Access
      We present a stable finite element formulation for the shallow water equations using the finite increment calculus (FIC) procedure. This research is focused on the stability properties of the FIC technique and uses linear ...
    • A finite calculus formulation of the level set equation 

      Idelshon, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio; Ransau, S. (2003-09)
      Research report
      Open Access
      A finite calculus formulation of the level set equation is presented. Quadratic Galerkin finite elements are used for spatial discretization. A unique stabilization parameter is computed. A time stabilization parameter ...