• 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.

Dislocation-based model for the prediction of the behavior of b.c.c. materials – grain size and strain path effects

Article dans une revue avec comité de lecture
Author
CARVALHO RESENDE, Tales
BOUVIER, Salima
SABLIN, Simon-Serge
ccABED-MERAIM, Farid 
ccBALAN, Tudor
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]

URI
http://hdl.handle.net/10985/9893
DOI
10.1016/j.ijplas.2013.01.003
Date
2013
Journal
International Journal of Plasticity

Abstract

Sheet metal forming processes involve multi-axial strain paths. For the numerical simulation of such processes, an appropriate constitutive model that properly describes material behavior at large strain is required. For accurate and time-effective simulations, it is crucial to use plasticity models based on physics, as material macroscopic behavior is closely related to the evolution of the associated microstructures. Accordingly, a large strain work-hardening phenomenological model that incorporates the intragranular microstructure evolution through a dislocation density approach is proposed. The model is defined by a yield criterion and hardening laws that are all grain-size dependent. The classical Hill criterion in which grain-size dependency was introduced is proposed. Hardening laws are given by a combination of kinematic and isotropic contributions that respectively take into account the evolution with strain of cell blocks formed by geometrically necessary boundaries (GNBs) and individual dislocation cells delineated by incidental dislocation boundaries within cell blocks (IDBs). On the one hand, IDBs evolution contribution is described by a modified Rauch et al. isotropic model, which is able to describe work-hardening stagnation and work-softening. On the other hand, GNBs evolution contribution is described by a grain-size dependent tensorial back-stress expression proposed by Aouafi et al. [2007] to describe the plastic anisotropy and Bauschinger effect. Moreover, the proposed model aims to accurately predict steel behavior through an innovative approach by only changing few “simply measurable” microstructure data (e.g. chemical composition, grain size…). The predictive capabilities of the model are assessed for interstitial free (IF) and dual phase (DP) steels with grain sizes varying respectively in the 8-40 µm and 1-10 µm value range. Different loading paths are analyzed, namely the uniaxial tensile test, reversal simple shear and orthogonal tests.

Files in this item

Name:
LEM3_IJP_2013_BALAN.pdf
Size:
1.168Mb
Format:
PDF
Description:
Article de revue
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.

  • Work-hardening predicition using a dislocation based model for automotive Interstitial Free (IF) steels 
    Communication avec acte
    CARVALHO RESENDE, Tales; BOUVIER, Salima; SABLIN, Simon-Serge; ccABED-MERAIM, Farid ; ccBALAN, Tudor (Magdeburger Verein für Technische Mechanik e.V. and Otto-von-Guericke-University Magdeburg, 2009)
    With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free ...
  • Application of a dislocation based model for Interstitial Free (IF) steels to Marciniak Stretch test simulations 
    Communication sans acte
    CARVALHO RESENDE, Tales; SAADAOUI, Ayoub; BOUVIER, Salima; SABLIN, Simon-Serge; ccABED-MERAIM, Farid ; ccBALAN, Tudor (2010)
    With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever-shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free ...
  • Application of a dislocation based model for Interstitial Free (IF) steels to typical stamping simulations 
    Article dans une revue avec comité de lecture
    CARVALHO RESENDE, Tales; BOUVIER, Salima; SABLIN, Simon-Serge; ccABED-MERAIM, Farid ; ccBALAN, Tudor (2010)
    With a view to environmental, economic and safety concerns, car manufacturers need to design lighter and safer vehicles in ever shorter development times. In recent years, High Strength Steels (HSS) like Interstitial Free ...
  • Numerical investigation and experimental validation of a plasticity model for sheet steel forming 
    Article dans une revue avec comité de lecture
    CARVALHO RESENDE, Tales; ccBALAN, Tudor; BOUVIER, Salima; ccABED-MERAIM, Farid ; SABLIN, Simon-Serge (IOP Publishing, 2013)
    This paper investigates a recently developed elasto-plastic constitutive model. For this purpose, the model was implemented in a commercial finite element code and was used to simulate the cross-die deep drawing test. Deep ...
  • Modelling the effect of microstructure evolution on the macroscopic behavior of single phase and dual phase steels. Application to sheet forming process 
    Communication avec acte
    BOUVIER, Salima; CARVALHO-RESENDE, Tales; ccBALAN, Tudor; ccABED-MERAIM, Farid  (2017)
    The aim of this work is to develop a dislocation density based model for IF and DP steels that incorporates details of the microstructure evolution at the grain-size scale. The model takes into account (i) the contribution ...

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