info:eu-repo/semantics/article
Driving rate dependence of avalanche statistics and shapes at the yielding transition
Fecha
2016-02Registro en:
Liu, Chen; Ferrero, Ezequiel E.; Puosi, Francesco; Barrat, Jean Louis; Martens, Koen; Driving rate dependence of avalanche statistics and shapes at the yielding transition; American Physical Society; Physical Review Letters; 116; 6; 2-2016; 655010-655015
0031-9007
CONICET Digital
CONICET
Autor
Liu, Chen
Ferrero, Ezequiel E.
Puosi, Francesco
Barrat, Jean Louis
Martens, Koen
Resumen
We study stress time series caused by plastic avalanches in athermally sheared disordered materials. Using particle-based simulations and a mesoscopic elastoplastic model, we analyze system size and shear-rate dependence of the stress-drop duration 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.