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Numerical Implementation of Coupled Anisotropic Plasticity-Ductile Damage in Sheet Metal Forming Process

Published online by Cambridge University Press:  15 May 2017

R. Autay ,
S. Koubaa ,
M. Wali  and
F. Dammak
R. Autay
Affiliation:
Mechanical Modeling and Manufacturing LaboratoryNational Engineering School of SfaxUniversity of SfaxSfax, Tunisia
S. Koubaa
Affiliation:
Mechanical Modeling and Manufacturing LaboratoryNational Engineering School of SfaxUniversity of SfaxSfax, Tunisia
M. Wali*
Affiliation:
Mechanical Modeling and Manufacturing LaboratoryNational Engineering School of SfaxUniversity of SfaxSfax, Tunisia
F. Dammak
Affiliation:
Mechanical Modeling and Manufacturing LaboratoryNational Engineering School of SfaxUniversity of SfaxSfax, Tunisia
*
*Corresponding author ([email protected])
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Abstract

This paper deals with the implementation of an anisotropic plasticity constitutive equations exhibiting non-linear isotropic, kinematic hardening and coupled continuum ductile damage models. A fully implicit integration of the coupling constitutive equations is adopted and leads to two non-linear local scalar equations solved using the Newton method. The consistent local tangent modulus is obtained in a closed form by exact linearization of the algorithm. The numerical treatment of the proposed algorithm is implemented on ABAQUS using user interface material subroutines (UMAT and VUMAT). The performance of the present algorithm is assessed and bared out by numerical examples.

Keywords

Ductile damageAnisotropic materialImplicit integration
Type
Research Article
Information
Journal of Mechanics , Volume 34 , Issue 4 , August 2018 , pp. 417 - 430
Copyright
Copyright © The Society of Theoretical and Applied Mechanics 2018 

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