Multiscale finite element simulation of forming processes based on crystal plasticity

Komi Soho (1, 2) , Farid Abed-Meraim (1, 2) , Xavier Lemoine (1) , Hamid Zahrouni (1, 2)

1 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
2 Labex DAMAS

For the numerical simulation of sheet metal forming processes, the commercial finite element software packages are among the most commonly used. However, these software packages have some limitations; in particular, they essentially contain phenomenological constitutive models and thus do not allow accounting for the physical mechanisms of plasticity that take place at finer scales as well as the associated microstructure evolution. In this context, we propose to couple the Abaqus finite element code with micromechanical simulations based on crystal plasticity and a selfconsistent scale-transition scheme. This coupling strategy will be applied to the simulation of rolling processes, at different reduction rates, in order to estimate the evolution of the mechanical properties. By following some appropriately selected strain paths (i.e., strain lines) along the rolling process, one can also predict the texture evolution of the material as well as other parameters related to its microstructure. Our numerical results are compared with experimental data in the case of ferritic steels produced by ArcelorMittal.

Mots clés: Coupling; Crystal plasticity; Elasto-plasticity; Finite elements; Self-consistent homogenization; Sheet metal forming processes

Domaines: Génie des procédés; Matériaux; Mécanique [physics.med-ph]; Génie mécanique [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des structures [physics.class-ph]; Micro et nanotechnologies/Microélectronique

Komi Soho, Farid Abed-Meraim, Xavier Lemoine, Hamid Zahrouni. Multiscale finite element simulation of forming processes based on crystal plasticity. Key Engineering Materials, 2014, 611-612, pp.545-552. ⟨10.4028/www.scientific.net/KEM.611-612.545⟩. ⟨hal-01215887⟩