title: Local stress relaxation and shear banding in a dry foam under shear.
abstract: We have developed a realistic simulation of 2D dry foams under quasistatic shear. After a short transient, a shear-banding instability is observed. These results are compared with measurements obtained on real 2D (confined) foams. The numerical model allows us to exhibit the mechanical response of the material to a single plastication event. From the analysis of this elastic propagator, we propose a scenario for the onset and stability of the flow localization process in foams, which should remain valid for most athermal amorphous systems under creep flow.
authors.affiliation: LFO-Collège de France, CNRS UMR 7125, Paris, France.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Kabla
authors.forename: Georges
authors.initials: G
authors.lastname: Debrégeas