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

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

2002-11-27

arxiv.org/abs/cond-mat/0211624v2

Phys. Rev. Lett. 90, 258303 (2003)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 figures. Major changes with regards to initially submitted manuscript

Scientific paper

10.1103/PhysRevLett.90.258303

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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