A comparison of different hardening rules on a multi-step global manufacturing process modeling

Diego Britez (1) , Sana Werda (1) , Raynald Laheurte (1) , Philippe Darnis (1) , Olivier Cahuc (1)

1 I2M - Institut de Mécanique et d'Ingénierie

The main difficulty presented by the simulation of a global process that includes different forming stages is the correct characterization of the material state at the end of each of these stages, which in turn, are the initial point of the following process. Hardening variables are capable of characterizing the state of the material, which, after a plastic transformation, varies according to the direction of the solicitation and its intensity. The present work carries out an analysis of the influence in the election of the hardening rule used in the behavior law, comparing the most used approach. For a work piece solicited by combined efforts in multiple stages, results are obtained by numerical simulation. A correct choice will allow obtaining reliable predictions, not the solicitations but also to the final geometry and the dissipated energy in the global process, allowing an eventual optimization of such process.

Mots clés: Process Chain Simulation; Anisotropic Evolution; Strain Hardening Rule; Residual Stress

Domaines: Matériaux

Diego Britez, Sana Werda, Raynald Laheurte, Philippe Darnis, Olivier Cahuc. A comparison of different hardening rules on a multi-step global manufacturing process modeling. 24th International Conference on Material Forming ESAFORM 2021, Apr 2021, Liège, Belgium. ⟨10.25518/esaform21.4049⟩. ⟨hal-03776845⟩