• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)
  • View Item
  • Home
  • Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Overview of the theoretical relations between necking and strain localization criteria.

Communication avec acte
Author
ALTMEYER, Guillaume
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
ABED-MERAIM, Farid
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
BALAN, Tudor
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

URI
http://hdl.handle.net/10985/7484
Date
2013

Abstract

Many criteria have been developed during last decades to predict diffuse or localized necking and shear banding. The lack of confrontation of these models with each other on relevant applications makes their choice difficult for the designer. It is proposed to reformulate these plastic instability criteria in an unified framework, to compare their theoretical bases to establish links between them and then to highlighten their limitations. In the case of diffuse necking, a comparison is made between the criteria based on bifurcation analysis and on those based on maximum force principle for elastic-plastic materials. In the case of localized modes, it is shown that the predictions of the Marciniak – Kuczynski approach, based on a multizone model, tend to those of the loss of ellipticity criterion when the initial defect size tends to zero (no initial defect introduced). In the case of elasto-viscoplastic behavior, an approach based on a linear stability analysis is mentioned.

Files in this item

Name:
lem3_CFM_2013_ALTMEYER.pdf
Size:
309.5Kb
Format:
PDF
Description:
Article principal
View/Open

Collections

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

Related items

Showing items related by title, author, creator and subject.

  • Prédictions de courbes limites de formage avec les critères de localisation de Marciniak-Kuczynski et de Hill 
    Communication avec acte
    ALTMEYER, Guillaume; ABED-MERAIM, Farid; BALAN, Tudor (2008)
    Lors des opérations de mise en forme de structures minces, des phénomènes d’instabilité peuvent se produire. En emboutissage, ces instabilités peuvent se manifester sous différentes formes comme par exemple la striction ...
  • Comparison of forming limit diagrams predicted with different localization criteria 
    Article dans une revue avec comité de lecture
    ALTMEYER, Guillaume; ABED-MERAIM, Farid; BALAN, Tudor (Wiley, 2008)
    Automotive industries are more and more subject to restrictive environmental constraints. Weight reduction of structures seems to be an interesting way to satisfy these requirements. This can be achieved either by using ...
  • Investigation and comparative analysis of plastic instability criteria: Application to forming limit diagrams 
    Article dans une revue avec comité de lecture
    ABED-MERAIM, Farid; BALAN, Tudor; ALTMEYER, Guillaume (Springer Verlag, 2014)
    The prediction of forming limit diagrams (FLDs) is of significant interest to the sheet metal forming industry. Although a large variety of plastic instability criteria have been developed during the previous decades, there ...
  • Formability prediction of thin metal sheets using various localization criteria 
    Article dans une revue avec comité de lecture
    ALTMEYER, Guillaume; ABED-MERAIM, Farid; BALAN, Tudor (Springer Link, 2009)
    The aim of this paper is to give an overview of the theoretical basis of the most significant and commonly used localization criteria reformulated into a unified framework, and to apply these criteria to different materials ...
  • Investigation of some localization criteria and their relevance to prediction of forming limit diagrams 
    Article dans une revue avec comité de lecture
    ALTMEYER, Guillaume; ABED-MERAIM, Farid; BALAN, Tudor (Wiley, 2010)
    Because prevention of forming defects has become one of the major industrial challenges, various experimental and theoretical approaches have been developed to predict sheet metal formability. The main theoretical models ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales