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Local Stress Relaxation and Shear-banding in a Dry Foam under Shear

Alexandre Kabla·Georges Debregeas
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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. 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.

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Alexandre Kabla, Georges Debregeas. 2003-06-30. Local Stress Relaxation and Shear-banding in a Dry Foam under Shear. https://doi.org/10.1103/physrevlett.90.258303

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