Now showing items 1-20 of 23

  • 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 ...
  • 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
    Restricted access - publisher's policy
    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
    Restricted access - publisher's policy
    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 robust approach to model densification and crack formation in powder compaction processes 

    Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier; Cante Terán, Juan Carlos; Weyler Pérez, Rafael (Wiley and Sons, 2011-08-26)
    Article
    Restricted access - publisher's policy
    This paper deals with the question of how to efficiently integrate a constitutive model that describes the densification of powders and the potential formation of cracks in Powder Metallurgy (P/M) cold compaction processes. ...
  • Continuous chip formation in metal cutting processes using the Particle Finite Element Method (PFEM) 

    Rodríguez, J. M.; Carbonell Puigbó, Josep Maria; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (2017-08-01)
    Article
    Open Access
    This paper presents a study on the metal cutting simulation with a particular numerical technique, the Particle Finite Element Method (PFEM) with a new modified time integration algorithm and incorporating a contact algorithm ...
  • Experimental and numerical study of the die filling stage in powder metallurgy 

    Cante Terán, Juan Carlos; Oliver Olivella, Xavier; González Ferrari, Carlos; Riera Colom, María Dolores; Istúriz, Álvaro; Prado Pozuelo, José Manuel (European Powder Metallurgy, 2005)
    Conference report
    Open Access
    The aim of this work is to show the potential of the Particle Finite Element Method (PFEM) in the simulation of the powder transfer stage, in powder metallurgy industrial processes. The most innovative aspects of the work ...
  • Flow regime analyses during the filling stage in powder metallurgy processes: experimental study and numerical modelling 

    Cante Terán, Juan Carlos; Riera Colom, María Dolores; Oliver Olivella, Xavier; Prado Pozuelo, José Manuel (2011-01)
    Article
    Open Access
    Experimental and numerical studies of powder flow during the die filling stage in powder metallurgy cold compaction processes are presented. An experimental setting consisting of a horizontal pneumatically activated ...
  • High-performance model reduction techniques in computational multiscale homogenization 

    Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier; Huespe, Alfredo Edmundo; Caicedo Silva, Manuel Alejandro; Cante Terán, Juan Carlos (2014-07-01)
    Article
    Open Access
    A novel model-order reduction technique for the solution of the fine-scale equilibrium problem appearing in computational homogenization is presented. The reduced set of empirical shape functions is obtained using a ...
  • Numerical modeling of crack formation in power compaction processes 

    Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier; Cante Terán, Juan Carlos (Universitat Politècnica de Catalunya. Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2009)
    Book
    Open Access
    Powder metallurgy (P/M) is an important technique of manufacturing metal parts from metal in powdered form. Traditionally, P/M processes and products have been designed and developed on the basis of practical rules and ...
  • On multi-scale computational design of structural materials using the topological derivative 

    Oliver Olivella, Xavier; Ferrer Ferré, Àlex; Cante Terán, Juan Carlos; Giusti, Sebastian Miguel; Lloberas Valls, Oriol (Springer, 2017)
    Part of book or chapter of book
    Restricted access - publisher's policy
    This book brings together some 20 chapters on state-of-the-art research in the broad field of computational plasticity with applications in civil and mechanical engineering, metal forming processes, geomechanics, nonlinear ...
  • On multi-scale structural topology optimization and material design 

    Ferrer Ferré, Àlex; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (Associação Portuguesa de Mecânica Teórica, Aplicada e Computacional (APMTAC), 2015)
    Conference report
    Restricted access - publisher's policy
    Computational material design has gained considerable interest, along the last years, in the computational mechanics community. Although most of the current approaches focus on one-scale structural optimization, this work ...
  • On particle finite element methods (PFEM) in dynamic solid mechanics problems 

    Oliver Olivella, Xavier; Cante Terán, Juan Carlos; Weyler Pérez, Rafael; Hartmann, S.; Hernández Ortega, Joaquín Alberto (2009)
    Conference report
    Restricted access - publisher's policy
    The work presents the most relevant features of a numerical simulation setting based on the Particle Finite Element Method. The method is especially suitable for dynamic problems in computational solid mechanics where a ...
  • On the numerical modeling of granular material flows via the Particle Finite Element Method (PFEM) 

    Dávalos, César; Cante Terán, Juan Carlos; Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier (2015-10)
    Article
    Open Access
    The aim of this work is to describe a numerical framework for reliably and robustly simulating the different kinematic conditions exhibited by granular materials while spreading ---from a stagnant condition, when the ...
  • On the numerical resolution of the discontinuous material bifurcation problem 

    Oliver, Jose; Huespe, Alfredo Edmundo; Cante Terán, Juan Carlos; Díaz, G. (2010)
    Article
    Restricted access - publisher's policy
    The work focuses on the numerical resolution of the discontinuous material bifurcation problem as a relevant ingredient in computational material failure mechanics. The problem consists of finding the conditions for the ...
  • Particle finite element method applied to granular material flow 

    Cante Terán, Juan Carlos; Oliver Olivella, Xavier; Weyler Pérez, Rafael; Cafiero, Mailhyn E.; Dávalos Chargoy, César Emilio (CIMNE (Centro Internacional de Métodos Numéricos en Ingeniería), 2009-11-25)
    Conference report
    Open Access
    A numerical model, based on a rate-dependent constitutive model, via a flow formulation, and in the framework of the particle finite element method (PFEM) is proposed. It is settled on the assumption that the powder can ...
  • PFEM-based modeling of industrial granular flows 

    Cante Terán, Juan Carlos; Dávalos Chargoy, César Emilio; Hernández Ortega, Joaquín Alberto; Oliver Olivella, Xavier; Jonsén, P.; Gustafsson, G.; Häggblad, H.-Å. (2014-05)
    Article
    Open Access
    The potential of numerical methods for the solution and optimization of industrial granular flows problems is widely accepted by the industries of this field, the challenge being to promote effectively their industrial ...
  • Simulación numérica de procesos de compactación de pubimateriales 

    Cante Terán, Juan Carlos (Universitat Politècnica de Catalunya, 1995-07-19)
    Doctoral thesis
    Open Access
    En esta tesis se presenta un modelo numérico para simular la fase de compactación de pulvimateriales y su implementación en ordenadores de cálculo paralelo, con el ánimo de facilitar y mejorar el diseño de los procesos de ...
  • Simulación numérica de procesos de compactación de pulvimateriales. Parte 2: Validación y aplicaciones industriales 

    Oliver, Javier; Cante Terán, Juan Carlos; Oller, Sergio (2009-06-15T13:55:23Z)
    Article
    Open Access
    En la primera parte de este trabajo se describió el modelo numérico propuesto para la simuación del proceso de compactación de pulvimateriales. En esta segunda parte se estudia el comportamiento del modelo mediante la ...
  • The domain interface method in non-conforming domain decomposition multifield problemsdomain decomposition multifield problems 

    Lloberas Valls, Oriol; Cafiero, Mailhyn E.; Cante Terán, Juan Carlos; Ferrer Ferré, Àlex; Oliver Olivella, Xavier (2016-12)
    Article
    Open Access
    The Domain Interface Method (DIM) is extended in this contribution for the case of mixed fields as encountered in multiphysics problems. The essence of the non-conforming domain decomposition technique consists in a ...
  • The domain interface method: a general-purpose non-intrusive technique for non-conforming domain decomposition problems 

    Cafiero, Mailhyn E.; Lloberas Valls, Oriol; Cante Terán, Juan Carlos; Oliver Olivella, Xavier (2016-04)
    Article
    Open Access
    A domain decomposition technique is proposed which is capable of properly connecting arbitrary non-conforming interfaces. The strategy essentially consists in considering a fictitious zero-width interface between the ...