Now showing items 1-11 of 11

  • A computational model for the numerical simulation of FSW processes 

    Agelet de Saracibar Bosch, Carlos; Chiumenti, Michèle; Santiago, Diego; Cervera Ruiz, Miguel; Dialami, Narges; Lombera, Guillermo (Springer, 2010)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • Advances in the numerical simulation of 3D FSW processes 

    Agelet de Saracibar Bosch, Carlos; Chiumenti, Michèle; Cervera Ruiz, Miguel; Dialami, Narges; Santiago, Diego; Lombera, Guillermo (2011)
    Conference report
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    This work deals with the computational modeling and numerical simulation of 3D Friction Stir Welding (FSW) processes. Eulerian and ALE formulations have been used to solve the quasi-static thermal transient governing ...
  • A fast and accurate two-stage strategy to evaluate the effect of the pin tool profile on metal flow, torque and forces in friction stir welding 

    Dialami, Narges; Cervera Ruiz, Miguel; Chiumenti, Michèle; Agelet de Saracibar Bosch, Carlos (2017-03-01)
    Article
    Open Access
    Pin geometry is a fundamental consideration in friction stir welding (FSW). It influences the thermal behaviour, material flow and forces during the weld and reflects on the joint quality. This work studies four pin ...
  • A novel stress-accurate FE technology for highly non-linear analysis with incompressibility constraint: application to the numerical simulation of the FSW process 

    Chiumenti, Michèle; Cervera Ruiz, Miguel; Agelet de Saracibar Bosch, Carlos; Dialami, Narges (American Institute of Physics (AIP), 2013)
    Conference report
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    In this work a novel finite element technology based on a three-field mixed formulation is presented. The Variational Multi Scale (VMS) method is used to circumvent the LBB stability condition allowing the use of linear ...
  • A strategy for the numerical simulation of metal deposition and multi-pass welding processes 

    Dialami, Narges; Chiumenti, Michèle; Agelet de Saracibar Bosch, Carlos; Cervera Ruiz, Miguel (Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2009)
    Conference report
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    In this work a numerical model is developed to accurately predict temperature evolution and distortions associated to the successive welding layers deposited during the multi-pass welding and metal deposition processes (MD).
  • Computational modeling of multi-pass welding and metal deposition processes 

    Chiumenti, Michèle; Cervera Ruiz, Miguel; Dialami, Narges; Agelet de Saracibar Bosch, Carlos (European Scientific Association For Material Forming (ESAFORM), 2009)
    Conference report
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    In this work a computational model for the numerical simulation of multi-pass welding and metal deposition processes is presented. A fully coupled thermo-mechanical solution, including phase-change phenomena and shrinkage ...
  • Enhanced friction model for Friction Stir Welding (FSW) analysis: simulation and experimental validation 

    Dialami, Narges; Chiumenti, Michèle; Cervera Ruiz, Miguel; Segatori, A.; Osikowicz, W. (2017-11)
    Article
    Restricted access - publisher's policy
    Friction is one of the main heat generation mechanisms in Friction Stir Welding (FSW). This phenomenon occurs between the pin and the workpiece as the rotating tool moves along the weld line. An accurate friction model is ...
  • Local–global strategy for the prediction of residual stresses in FSW processes 

    Dialami, Narges; Cervera Ruiz, Miguel; Chiumenti, Michèle; Agelet de Saracibar Bosch, Carlos (2017-02)
    Article
    Open Access
    This work describes the local–global strategy proposed for the computation of residual stresses in friction stir welding (FSW) processes. A coupling strategy between the analysis of the process zone nearby the pin tool ...
  • Numerical modeling of the electron beam welding and its experimental validation 

    Chiumenti, Michèle; Cervera Ruiz, Miguel; Dialami, Narges; Wu, Bin; Jinwei, L.; Agelet de Saracibar Bosch, Carlos (2016-11)
    Article
    Open Access
    Electron Beam Welding (EBW) is a highly efficient and precise welding method increasingly used within the manufacturing chain and of growing importance in different industrial environments such as the aeronautical and ...
  • On the computational modeling of FSW processes 

    Agelet de Saracibar Bosch, Carlos; Chiumenti, Michèle; Santiago, Diego; Cervera Ruiz, Miguel; Dialami, Narges; Lombera, Guillermo (NEAT Press, 2010)
    Conference report
    Restricted access - publisher's policy
    This work deals with the computational modeling and numerical simulation of Friction Stir Welding (FSW) processes. Here a quasi-static, transient, mixed stabilized Eulerian formulation is used. Norton-Hoff and Sheppard-Wright ...
  • Thermo-mechanical analysis of welding processes 

    Dialami, Narges (Universitat Politècnica de Catalunya, 2014-03-12)
    Doctoral thesis
    Open Access
    This thesis deals with the numerical simulation of welding processes. The analysis is focused either at global level, considering the full component to be jointed, or locally, studying more in detail the heat affected zone ...