Recent Submissions

  • On the existence of representative volumes for softening quasi-brittle materials: a failure zone averaging scheme 

    Nguyen, Vinh Phu; Lloberas Valls, Oriol; Stroeven, Martijn; Sluys, Lambertus J. (2010-11)
    Article
    Open Access
    The concept of the representative volume element (RVE) for softening materials is revised in this contribution. It is demonstrated by means of numerical simulations that there exists a sample which is statistically ...
  • Homogenization-based multiscale crack modelling: from micro-diffusive damage to macro-cracks 

    Nguyen, Vinh Phu; Lloberas Valls, Oriol; Stroeven, Martijn; Sluys, Lambertus J. (2011-02)
    Article
    Open Access
    The existence of a representative volume element (RVE) for a class of quasi-brittle materials having a random heterogeneous microstructure in tensile, shear and mixed mode loading is demonstrated by deriving traction–separation ...
  • Computational homogenization for multiscale crack modeling: implementational and computational aspects 

    Nguyen, Vinh Phu; Lloberas Valls, Oriol; Sluys, Lambertus J.; Stroeven, Martijn (John Wiley & sons, 2012-01)
    Article
    Open Access
    A computational homogenization procedure for cohesive and adhesive crack modeling of materials with a heterogeneous microstructure has been recently presented in Computer Methods in Applied Mechanics and Engineering (2010, ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • RC structures cyclic behavior simulation with a model integrating plasticity, damage, and bond-slip 

    Alfarah, Bashar; Murcia Delso, Juan; López Almansa, Francisco; Oller Martínez, Sergio Horacio (Wiley, 2018)
    Article
    Restricted access - publisher's policy
    Copyright © 2017 John Wiley & Sons, Ltd. The behavior of reinforced concrete structures under severe demands, as strong ground motions, is highly complex; this is mainly due to the complexity of concrete behavior and to ...
  • Two-scale topology optimization in computational material design: an integrated approach 

    Ferrer Ferré, Àlex; Cante Terán, Juan Carlos; Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier (John Wiley & Sons, 2018-01)
    Article
    Open Access
    In this work, a new strategy for solving multiscale topology optimization problems is presented. An alternate direction algorithm and a precomputed offline microstructure database (Computational Vademecum) are used to ...
  • 3D numerical models of FSW processes with non-cylindrical pin 

    Bussetta, Philippe; Dialamishabankareh, Narges; Chiumenti, Michèle; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel; Ponthot, Jean Philippe (Taylor & Francis, 2015-06)
    Article
    Open Access
    Friction Stir Welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW process, the behaviour ...
  • Software solutions for ICME 

    Schmitz, Georg J; Engstrom, Anders; Bernhardt, R; Prahl, Ulrich; Adam, Laurent; Seyfart, J; Apel, M; Agelet de Saracibar Bosch, Carlos; Korzhavyi, P; Agren, J; Patzak, B (2016-01)
    Article
    Open Access
    The Integrated Computational Materials Engineering expert group (ICMEg), a coordination activity of the European Commission, aims at developing a global and open standard for information exchange between the heterogeneous ...
  • 3D numerical models using a fluid or a solid formulation of FSW processes with a non-cylindrical pin 

    Bussetta, Philippe; Dialamishabankareh, Narges; Chiumenti, Michèle; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel; Boman, Romain; Ponthot, Jean Philippe (Springer, 2015-12)
    Article
    Open Access
    Friction Stir Welding (FSW) process is a relatively recent welding process (patented in 1991). FSW is a solid-state joining process during which materials to be joined are not melted. During the FSW process, the behaviour ...
  • Experimental validation of an FSW model with an enhanced friction law: application to a threaded cylindrical pin tool 

    Dialamishabankareh, Narges; Cervera Ruiz, Miguel; Chiumenti, Michèle; Segatori, A.; Osikowicz, W. (MDPI AG, 2017-11)
    Article
    Open Access
    This work adopts a fast and accurate two-stage computational strategy for the analysis of FSW (Friction stir welding) processes using threaded cylindrical pin tools. The coupled thermo-mechanical problem is equipped with ...
  • A computational multiscale homogenization framework accounting for inertial effects: application to acoustic metamaterials modelling 

    Roca Cazorla, David; Lloberas Valls, Oriol; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (2018-03)
    Article
    Open Access
    A framework, based on an extended Hill–Mandel principle accounting for inertial effects (Multiscale Virtual Work principle), is developed for application to acoustic problems in the context of metamaterials modelling. The ...
  • Computational material design for acoustic cloaking 

    Méndez, Carlos Alberto; Podestá, J.M.; Lloberas Valls, Oriol; Toro, Sebastian; Huespe, Alfredo Edmundo; Oliver Olivella, Xavier (John Wiley & Sons, 2017-12)
    Article
    Open Access
    A topology optimization technique based on the topological derivative and the level set function is utilized to design/synthesize the micro-structure of a pentamode material for an acoustic cloaking device. The technique ...

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