Finite element prediction of sheet forming defects using elastic-plastic, damage and localization models

Badis Haddag (1) , Farid Abed-Meraim (2) , Tudor Balan (3)

1 LPMM - Laboratoire de physique et mécanique des matériaux
2 MeNu
3 MeNu

In this work, an advanced anisotropic elastic-plasticity model is combined with a damage model and a strain localization criterion in the aim to describe accurately the mechanical behavior of sheet metals. Large strain, fully three-dimensional, implicit time integration algorithms are developed for this model and implemented in the finite element code Abaqus. The resulting code is used to predict the strain localization limits as well as the springback after forming of sheet steels. The impact of strain-path dependent hardening models on the limit strains and on the amount of springback is addressed.

Mots clés: forming processes; finite element analysis; production engineering computing; stress-strain relations; elastic deformation; plastic deformation; elastic-plasticity; strain-path-dependent hardening; damage; large strains; implicit time integration; sheet metal forming; springback; forming limits; finite element simulation

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]; Génie des procédés; Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]; Génie mécanique [physics.class-ph]; Génie mécanique [physics.class-ph]

Badis Haddag, Farid Abed-Meraim, Tudor Balan. Finite element prediction of sheet forming defects using elastic-plastic, damage and localization models. 9th International Conference on Numerical Methods in Industrial Forming Processes (NUMIFORM 07), Jun 2007, Porto, Portugal. pp.227-232, ⟨10.1063/1.2740816⟩. ⟨hal-00656200⟩