Reference : Study of the formability of steels
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Materials science & engineering
Study of the formability of steels
Ben Bettaieb, Mohamed mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Lemoine, X. [> >]
Duchene, Laurent mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Habraken, Anne mailto [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
Proceedings of the International ESAFORM Conference 2009
ESAFORM Conference
27 - 29 avril 2009
[en] Gurson model ; DP steels ; nucleation ; growth ; formability ; LIMARC
[en] In the present contribution, a new advanced Gurson model [1] is developed. This new model is an extension of the initial one, to the plastic anisotropy and the mixed (isotropic+ kinematic) hardening of the fully dense matrix. The nucleation and the growth phases are considered by integrating the empirical laws developed by Bouaziz et al. [2] in this new model. These laws, identified on the basis of X-ray microtomography results, display the triaxiality effect on the nucleation and the growth of cavities. This advanced Gurson model is implemented into a finite element code by using an implicit-explicit integration scheme. FE simulations study the behavior of a sample submitted to tensile test and assess the influence of nucleation and growth laws on the formability of this sample.

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