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07 February 2025
 
  » arxiv » 1605.0337

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The non-local repercussions of partial jamming in glassy and granular flows
Prashidha Kharel ; Pierre Rognon ;
Date 2 May 2016
AbstractThis Letter establishes a link between the non-local behaviour of glassy materials and the presence of transient clusters of jammed particles within the flow. These clusters are first evidenced in simulated dense granular flows subjected to plane shear, and are found to originate from a mechanism of multiple orthogonal shear banding. A continuum non-local model, similar in form to the non-local Kinetic-Elasto-Plastic model, is then directly derived by simply considering the spatial redistribution of vorticity induced by these clusters. The non-locality length scale is thus found to be directly related to the cluster size. The finding of this purely kinematic origin indicates that non-local behaviour should be expected in all glassy materials, regardless of their local constitutive law, as long as they partially jam during flow.
Source arXiv, 1605.0337
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