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Effect of hardening and damage parameters on the prediction of localized necking in thin sheet metals

Communication avec acte
Auteur
BOUKTIR, Yasser
242513 École Militaire Polytechnique [Alger] [EMP]
ccCHALAL, Hocine
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
243747 Labex DAMAS
ccABED-MERAIM, Farid

URI
http://hdl.handle.net/10985/20345
Date
2016

Résumé

In this work, an elastic–plastic model with Hill’48 anisotropic yield surface is coupled with the continuum damage mechanics theory and combined with the bifurcation analysis, in order to predict strain localization in thin sheet metals. The resulting approach is implemented into the ABAQUS finite element code within the framework of large strains and plane-stress conditions. A sensitivity analysis with respect to hardening and damage parameters is carried out to identify the most influential parameters on strain localization predictions.

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LEM3_IRF_2016_BOUKTIR.pdf
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  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Investigation of ductility limits based on bifurcation theory coupled with continuum damage mechanics 
    Article dans une revue avec comité de lecture
    BOUKTIR, Yasser; ccCHALAL, Hocine; HADDAD, Moussa; ccABED-MERAIM, Farid (Elsevier, 2016)
    The ductility limits of an St14 steel are investigated using an elastic‒plastic‒damage model and bifurcation theory. An associative J2-flow theory of plasticity is coupled with damage within the framework of continuum ...
  • Formability prediction of ductile materials using a non-associative plasticity model and bifurcation-based criteria 
    Communication avec acte
    BOUKTIR, Yasser; ccCHALAL, Hocine; ccABED-MERAIM, Farid (2016)
    Plastic instabilities such as diffuse or localized necking may occur during sheet metal forming processes, thus limiting sheet metal formability, which is detrimental to industry. The formability of sheet metals is usually ...
  • Prediction of necking in thin sheet metals using an elastic‒plastic model coupled with ductile damage and bifurcation criteria 
    Article dans une revue avec comité de lecture
    BOUKTIR, Yasser; ccCHALAL, Hocine; ccABED-MERAIM, Farid (SAGE Publications, 2018)
    In this paper, the conditions for the occurrence of diffuse and localized necking in thin sheet metals are investigated. The prediction of these necking phenomena is undertaken using an elastic‒plastic model coupled with ...
  • Evaluation of a new solid-shell finite element on the simulation of sheet metal forming processes 
    Communication avec acte
    ccCHALAL, Hocine; SALAHOUELHADJ, Abdellah; ccABED-MERAIM, Farid (Wiley, 2012)
    In this paper, the performance of the solid-shell finite element SHB8PS is assessed in the context of sheet metal forming simulation using anisotropic elastic-plastic behavior models. This finite element technology has ...
  • Vibration modeling of sandwich structures using solid-shell finite elements 
    Communication avec acte
    KPEKY, Fessal; BOUDAOUD, Hakim; ccCHALAL, Hocine; ccABED-MERAIM, Farid; DAYA, El Mostafa (2014)
    The aim of this work is to propose a new finite element modeling for vibration of sandwich structures with soft core. Indeed, several approaches have been adopted in the literature to accurately model these types of ...

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