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Title: Non normal and non quadratic anisotropic plasticity coupled with ductile damage in sheet metal forming: Application to the hydro bulging test

Abstract

In this work an improved material model is proposed that shows good agreement with experimental data for both hardening curves and plastic strain ratios in uniaxial and equibiaxial proportional loading paths for steel metal until the final fracture. This model is based on non associative and non normal flow rule using two different orthotropic equivalent stresses in both yield criterion and plastic potential functions. For the plastic potential the classical Hill 1948 quadratic equivalent stress is considered while for the yield criterion the Karafillis and Boyce 1993 non quadratic equivalent stress is used taking into account the non linear mixed (kinematic and isotropic) hardening. Applications are made to hydro bulging tests using both circular and elliptical dies. The results obtained with different particular cases of the model such as the normal quadratic and the non normal non quadratic cases are compared and discussed with respect to the experimental results.

Authors:
;  [1];  [2]
  1. ICD/LASMIS, FRE : CNRS N deg. 2848 - Universite de Technologie de Troyes 12, rue marie curie BP 2060, 10000 Troyes (France)
  2. LGM/GM-MA05-Ecole Nationale d'Ingenieurs de Monastir, Avenue Ibn El Jazzar, 5019 Monastir (Tunisia)
Publication Date:
OSTI Identifier:
21057026
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 907; Journal Issue: 1; Conference: 10. ESAFORM conference on material forming, Zaragoza (Spain), 18-20 Apr 2007; Other Information: DOI: 10.1063/1.2729531; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANISOTROPY; COMPARATIVE EVALUATIONS; FRACTURES; HARDENING; LOADING; METALS; NONLINEAR PROBLEMS; PLASTICITY; SHEETS; STEELS; STRAINS; STRESSES

Citation Formats

Badreddine, Houssem, Saanouni, Khemaies, and Dogui, Abdelwaheb. Non normal and non quadratic anisotropic plasticity coupled with ductile damage in sheet metal forming: Application to the hydro bulging test. United States: N. p., 2007. Web. doi:10.1063/1.2729531.
Badreddine, Houssem, Saanouni, Khemaies, & Dogui, Abdelwaheb. Non normal and non quadratic anisotropic plasticity coupled with ductile damage in sheet metal forming: Application to the hydro bulging test. United States. doi:10.1063/1.2729531.
Badreddine, Houssem, Saanouni, Khemaies, and Dogui, Abdelwaheb. Sat . "Non normal and non quadratic anisotropic plasticity coupled with ductile damage in sheet metal forming: Application to the hydro bulging test". United States. doi:10.1063/1.2729531.
@article{osti_21057026,
title = {Non normal and non quadratic anisotropic plasticity coupled with ductile damage in sheet metal forming: Application to the hydro bulging test},
author = {Badreddine, Houssem and Saanouni, Khemaies and Dogui, Abdelwaheb},
abstractNote = {In this work an improved material model is proposed that shows good agreement with experimental data for both hardening curves and plastic strain ratios in uniaxial and equibiaxial proportional loading paths for steel metal until the final fracture. This model is based on non associative and non normal flow rule using two different orthotropic equivalent stresses in both yield criterion and plastic potential functions. For the plastic potential the classical Hill 1948 quadratic equivalent stress is considered while for the yield criterion the Karafillis and Boyce 1993 non quadratic equivalent stress is used taking into account the non linear mixed (kinematic and isotropic) hardening. Applications are made to hydro bulging tests using both circular and elliptical dies. The results obtained with different particular cases of the model such as the normal quadratic and the non normal non quadratic cases are compared and discussed with respect to the experimental results.},
doi = {10.1063/1.2729531},
journal = {AIP Conference Proceedings},
number = 1,
volume = 907,
place = {United States},
year = {Sat Apr 07 00:00:00 EDT 2007},
month = {Sat Apr 07 00:00:00 EDT 2007}
}