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arXiv · 1506.08161

Driving rate dependence of avalanche statistics and shapes at the yielding transition

Chen Liu·Ezequiel E. Ferrero·Francesco Puosi·Jean-Louis Barrat·Kirsten Martens
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Abstract

We study stress time series caused by plastic avalanches in athermally sheared disordered materials. Using particle-based simulations and a mesoscopic elasto-plastic model, we analyze size and shear-rate dependence of the stress-drop durations and size distributions together with their average temporal shape. We find critical exponents different from mean-field predictions, and a clear asymmetry for individual avalanches. We probe scaling relations for the rate dependency of the dynamics and we report a crossover towards mean-field results for strong driving.

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Chen Liu, Ezequiel E. Ferrero, Francesco Puosi, Jean-Louis Barrat, Kirsten Martens. 2015-11-27. Driving rate dependence of avalanche statistics and shapes at the yielding transition. https://doi.org/10.1103/physrevlett.116.065501

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