From local stress relaxation to shear-banding in a simulated foam under shear
Abstract
We have developed a realistic simulation of 2D dry foams under quasi-static shear. After a short transient, a shear-banding instability is observed with flow characteristics very similar to measurements obtained on real foams. This numerical model allows us to probe 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.Keywords
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