Séminaire du LPTMS: Jean-Louis Barrat

Elastoplastic models for amorphous plasticity

Jean-Louis Barrat (Université Joseph Fourier, Grenoble)

I will present our current understanding, based on microscopic simulations and experiments, of the elementary mechanisms that govern the deformation and flow of amorphous materials. I will show how these mechanisms can be incorporated into  simple lattice models governed by long range elastic interactions, discuss the mean field analysis of these models as well as fluctuation related issues such as the  statistics of avalanche like events.

References:

  • Modeling deformation and flow of disordered materials, J-L. Barrat, J.J. de Pablo, MRS Bulletin 32, 941 (2007)
  • Driving rate dependence of avalanches statistics and shapes at the yielding transition, C. Liu, E. Ferrero, F. Puosi, J-L. Barrat, K. Martens, PRL 116 065201 (2016)
  • On the relevance of disorder in athermal amorphous materials under shear, E. Agoritsas, E. Bertin, K. Martens, J-L. Barrat EPJE 38 15071 (2015)
  • Rheology of athermal amorphous solids: Revisiting simplified scenarios and the concept of mechanical noise temperature, A. Nicolas, K. Martens, J-L. Barrat EPL 107 44003 (2014)

Date/Time : 31/05/2016 - 11:00 - 12:00

Location : LPTMS, salle 201, 2ème étage, Bât 100, Campus d'Orsay

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