%0 Journal Article
%T Identification strategy influence of elastoplastic behavior law parameters on Gurson每Tvergaard每Needleman damage parameters: Application to DP980 steel
%A Abdelaziz Ati
%A Mustapha Djouabi
%A Pierre-Yves Manach
%J International Journal of Damage Mechanics
%@ 1530-7921
%D 2019
%R 10.1177/1056789518772130
%X This work adopts elastic每plastic/damage coupling in order to describe tensile behavior with validation on the deep-drawing test of a DP980 Dual Phase steel sheet. The damage model used is the Gurson每Tvergaard每Needleman (GTN model). The hardening laws used are those of Swift (non-saturating law), Voce (saturating law), Hockett-Sherby (saturating law) and the two combined laws Swift/Hockett-Sherby and Swift/Voce. An identifying method for elastic每plastic parameters and GTN damage model parameters is presented using the software modeFRONTIER. This method based on the inverse analysis is also proposed for the identification of weighting coefficient 汐 of the Swift/Hockett-Sherby combined hardening law. Finally, a parametric study was carried out to show that the plastic modulus can be considered as another criterion for the choice of a hardening law. Dependence of the damage model parameters to the hardening law is clearly established. The different behavior laws are introduced via a VUHARD type subroutine in the calculation code Abaqus
%K Elastic每plastic law
%K DP980 steel
%K GTN damage model
%K optimization
%K sensitivity analysis
%K plastic modulus
%K Circular Cup Drawing
%K VUHARD
%U https://journals.sagepub.com/doi/full/10.1177/1056789518772130