https://doi.org/10.1140/epje/s10189-023-00367-7
Regular Article - Flowing Matter
Permanent shear localization in dense disordered materials due to microscopic inertia
1
Department of Physics, Indian Institute of Technology, 678623, Palakkad, India
2
CNRS, LIPhy, University Grenoble Alpes, 38000, Grenoble, France
d
jean-louis.barrat@univ-grenoble-alpes.fr
Received:
9
June
2023
Accepted:
13
October
2023
Published online:
2
November
2023
In this work using computer simulations of 3D model of dense disordered solids we show, for the first time, the appearance of shear localization in the stationary flow under homogeneous driving conditions. To rationalize our simulation results we develop a continuum model, that couples the dynamics of the local flow to the evolution of a kinetic temperature field related to the local inertial dynamics. Our model predicts that the coupling of the flow field to this additional destabilizing field appears only as a necessary condition for shear localization, a minimum system size is necessary to accommodate the flow instability. Moreover we show that this size criterion resulting from our continuum description is in quantitative agreement with our particle-based simulation results.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
