Jump to main content
Jump to site search

Issue 38, 2015
Previous Article Next Article

Probing relevant ingredients in mean-field approaches for the athermal rheology of yield stress materials

Author affiliations

Abstract

Although the notion of mechanical noise is expected to play a key role in the non-linear rheology of athermally sheared amorphous systems, its characterization has so far remained elusive. Here, we show using molecular dynamic simulations that in spite of the presence of strong spatio-temporal correlations in the system, the local stress exhibits normal diffusion under the effect of the mechanical noise in the finite driving regime. The diffusion constant appears to be proportional to the mean plastic activity. Our data suggests that the corresponding proportionality constant is density independent, and can be directly related to the specific form of the rheological flow curve, pointing the way to a generic way of modeling mechanical noise in mean-field equations.

Graphical abstract: Probing relevant ingredients in mean-field approaches for the athermal rheology of yield stress materials

Back to tab navigation

Publication details

The article was received on 09 Jul 2015, accepted on 03 Aug 2015 and first published on 03 Aug 2015


Article type: Paper
DOI: 10.1039/C5SM01694K
Author version
available:
Download author version (PDF)
Soft Matter, 2015,11, 7639-7647

  •   Request permissions

    Probing relevant ingredients in mean-field approaches for the athermal rheology of yield stress materials

    F. Puosi, J. Olivier and K. Martens, Soft Matter, 2015, 11, 7639
    DOI: 10.1039/C5SM01694K

Search articles by author

Spotlight

Advertisements