Exploració per altres contribucions "Universitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus"

Ara es mostren els items 1-20 de 484

    • A 1D lumped-parameter/3D CFD approach for pressure drop in the aortic coarctation 

      Soudah Prieto, Eduardo; Bordoné, Maurizio; Dadvand, Pooyan; Rossi, Riccardo (Springer, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Aortic Coarctation is a congenital constriction of the aorta that increases blood pressure above the constriction and hinders the flow below it. Based on a 3D surface mesh of a moderate thoracic coarctation, a high quality ...

    • 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
      Accés obert
      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 comparative study on homogenization strategies for multi-scale analysis of materials 

      Ortolano González, José María; Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2013-02-01)
      Llibre
      Accés obert
      One of the most important engineering tasks over the years has been the design and manufacture of increasingly sophisticated structural materials as a result of the requirements related to the technological progress. In ...

    • 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
      Accés restringit per política de l'editorial
      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)
      Llibre
      Accés obert
      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
      Accés obert
      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 numerical simulation of FSW processes 

      Agelet de Saracibar Bosch, Carlos; Chiumenti, Michele; Santiago, Diego; Cervera Ruiz, Miguel; Dialami, Narges; Lombera, Guillermo (Springer, 2010)
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      In this paper a computational model for the numerical simulation of Friction Stir Welding (FSW) processes is presented. FSW is a new method of welding in solid state in which a shouldered tool with a profile probe is rotated ...

    • A consistent characteristic length for smeared cracking models 

      Oliver Olivella, Xavier (John Wiley & sons, 1989-02)
      Article
      Accés restringit per política de l'editorial
      A numerical scheme for crack modelling by means of continuous displacement fields is presented. In two-dimensional problems a crack is modelled as a limiting case of two singular lines (with continuous displacements, but ...

    • 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
      Accés restringit per política de l'editorial
      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 contact domain method for large deformation frictional contact problems. Part 1: Theoretical basis 

      Oliver Olivella, Xavier; Hartmann, S; Cante Terán, Juan Carlos; Weyler Pérez, Rafael; Hernández Ortega, Joaquín Alberto (2009-03)
      Article
      Accés restringit per política de l'editorial
      In the first part of this work, the theoretical basis of a frictional contact domain method for two-dimensional large deformation problems is presented. Most of the existing contact formulations impose the contact constraints ...

    • A contact domain method for large deformation frictional contact problems. Part 2: Numerical aspects 

      Hartmann, S.; Oliver Olivella, Xavier; Weyler Pérez, Rafael; Cante Terán, Juan Carlos; Hernández Ortega, Joaquín Alberto (2009)
      Article
      Accés restringit per política de l'editorial
      This second part of the work describes the numerical aspects of the developed contact domain method for large deformation frictional contact problems. The theoretical basis of this contact method is detailed in the first ...

    • 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)
      Llibre
      Accés obert

    • A direct elimination algorithm for quasi-static and dynamic contact problems 

      Capua, Daniel di; Agelet de Saracibar Bosch, Carlos (2015-01-01)
      Article
      Accés obert
      This paper deals with the computational modeling and numerical simulation of contact problems at Unite deformations using the Finite element method. Quasi-static and dynamic problems are considered and two particular ...

    • A fast and accurate method to solve the incompressible Navier-Stokes equations 

      Idelsohn Barg, Sergio Rodolfo; Nigro, Norberto; Gimenez, Juan; Rossi, Riccardo; Martí, Julio Marcelo (2013-02)
      Article
      Accés restringit per política de l'editorial
      Purpose: The purpose of this paper is to highlight the possibilities of a novel Lagrangian formulation in dealing with the solution of the incompressible Navier-Stokes equations with very large time steps. Design/meth ...

    • A finite point method for adaptive-three-dimensional compressible flow calculations 

      Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2009-07-30)
      Article
      Accés obert
      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 technique which allows obtaining the discrete ...

    • A finite strain, finite band method for modeling ductile fracture 

      Huespe, Alfredo Edmundo; Needleman, Alan; Oliver Olivella, Xavier; Sánchez, Pedro J (2012-01)
      Article
      Accés obert
      We present a finite deformation generalization of the finite thickness embedded discontinuity formulation presented in our previous paper [A.E. Huespe, A. Needleman, J. Oliver, P.J. Sánchez, A finite thickness band method ...

    • A finite thickness band method for ductile fracture analysis 

      Huespe, Alfredo Edmundo; Needleman, Alan; Oliver Olivella, Xavier; Sánchez, Pedro José (2009)
      Article
      Accés obert
      We present a finite element method with a finite thickness embedded weak discontinuity to analyze ductile fracture problems. The formulation is restricted to small geometry changes. The material response is characterized ...

    • A four-noded quadrilateral element for composite laminated plates/shells using the refined zigzag theory 

      Eijo, Ariel; Oñate Ibáñez de Navarra, Eugenio; Oller Martínez, Sergio Horacio (John Wiley & Sons, 2013-08)
      Article
      Accés restringit per política de l'editorial
      A new bilinear four-noded quadrilateral element (called quadrilateral linear refined zigzag) for the analysis of composite laminated and sandwich plates/shells based on the refined zigzag theory is presented. The element ...

    • A fractional-step method for the incompressible Navier-Stokes equations related to a predictor-multicorrector algorithm 

      Blasco Lorente, Jorge; Codina, Ramon; Huerta, Antonio (1998-12)
      Article
      Accés obert
      An implicit fractional-step method for the numerical solution of the time-dependent incompressible Navier-Stokes equations in primitive variables is studied in this paper. The method, which is first-order-accurate in the ...

    • A framework for robustness assessment in the context of corroded RC structures 

      Cavaco, E. S.; Neves, L. A. C.; Casas Rius, Joan Ramon; Huespe, Alfredo Edmundo (CRC Press, 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Structural robustness is an emergent concept related to the structural response to damage. At the present time, robustness is not well defined and much controversy still remains around this subject. Even if robustness has ...