Communication avec acte

A simplified pseudo inverse approach for damage modeling in the cold forging process
11th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2013 ; Shenyang ; China ; 6 July 2013 through 10 July 2013, AIP Conference Proceedings, Volume 1532, Pages 324-330, 2013

par   Ali HALOUANI , Yu Ming LI , Boussad ABBES , Ying Qiao GUO

Résumé :

Abstract :
This paper presents a simplified numerical method called "Pseudo Inverse Approach" (PIA) for damage prediction in metal forging process modeling and optimization. The approach is based on the knowledge of the final part shape. Some intermediate configurations are introduced and corrected by using a free surface method to consider the deformation paths. Based on the equivalent stress notion and tensile curve, a robust direct algorithm of plasticity is formulated and implemented. The plasticity is coupled with the ductile damage by using a strain based ductile damage model. The forging results obtained by the PIA are compared to those obtained by an incremental approach to show the efficiency and accuracy of the PIA, as well as the abilities to make the damage prediction.

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