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Modeling of void coalescence initiation and its impact on the prediction of material failure

Communication avec acte
Auteur
MSOLLI, Sabeur
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ccBEN BETTAIEB, Mohamed
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ccABED-MERAIM, Farid 
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
243747 Labex DAMAS

URI
http://hdl.handle.net/10985/18917
DOI
10.1063/1.4963549
Date
2016

Résumé

In the present paper, Thomason’s criterion is coupled with the well-known Gurson–Tvergaard–Needleman (GTN) damage model and used for the determination of the critical void volume fraction fc , which marks the initiation of the coalescence stage. The onset of void coalescence predicted by Thomason’s criterion is compared to that obtained by using a predefined fc , which is usually fitted on the basis of experimental results, as originally proposed in the GTN model. Comparisons are made in terms of both single finite element simulations and numerical results of deep drawing of a cup.

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Nom:
LEM3_ESAFORM_2016_BENBETTAIEB
Taille:
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  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)

Documents liés

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  • Combined effect of damage and plastic anisotropy on the ductility limit of thin metal sheets 
    Communication avec acte
    MSOLLI, Sabeur; ccBEN BETTAIEB, Mohamed; ccABED-MERAIM, Farid  (Elsevier, 2016)
    It is well known that both damage and plastic anisotropy strongly affect the ductility limit of thin metal sheets. Due to the manufacturing processes, initial defects, such as inclusions and voids, are commonly present in ...
  • Combined effect of damage and plastic anisotropy on the ductility limit of thin metal sheets 
    Article dans une revue avec comité de lecture
    MSOLLI, Sabeur; ccBEN BETTAIEB, Mohamed; ccABED-MERAIM, Farid  (ESIS - Elsevier, 2016)
    It is well known that both damage and plastic anisotropy strongly affect the ductility limit of thin metal sheets. Due to the manufacturing processes, initial defects, such as inclusions and voids, are ...
  • An anisotropic model with linear perturbation technique to predict HCP sheet metal ductility limit 
    Communication avec acte
    JEDIDI, Mohamed Yassine; ccBEN BETTAIEB, Mohamed; ccABED-MERAIM, Farid ; KHABOU, Mohamed Taoufik; BOUGUECHA, Anas; HADDAR, Mohamed (2021)
    In this paper, hexagonal closed packed (HCP) sheet metal ductility for a viscoplastic material is analyzed by using a linear perturbation technique. It can be used for the analysis of localized necking. This technique is ...
  • Prediction of necking in HCP sheet metals using a two-surface plasticity model 
    Article dans une revue avec comité de lecture
    JEDIDI, Mohamed Yassine; ccBEN BETTAIEB, Mohamed; ccABED-MERAIM, Farid ; KHABOU, Mohamed Taoufik; BOUGUECHA, Anas; HADDAR, Mohamed (Elsevier, 2020)
    In the present contribution, a two-surface plasticity model is coupled with several diffuse and localized necking criteria to predict the ductility limits of hexagonal closed packed sheet metals. The plastic strain is ...
  • An Anisotropic Model with Linear Perturbation Technique to Predict HCP Sheet Metal Ductility Limit 
    Chapitre d'ouvrage scientifique
    JEDIDI, Mohamed Yassine; ccBEN BETTAIEB, Mohamed; ccABED-MERAIM, Farid ; KHABOU, Mohamed Taoufik; BOUGUECHA, Anas; HADDAR, Mohamed (Springer International Publishing, 2022)
    In this paper, hexagonal closed packed (HCP) sheet metal ductility for a viscoplastic material is analyzed by using a linear perturbation technique. It can be used for the analysis of local-ized necking. This technique is ...

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