Free volume under shear

2015 | journal article. A publication with affiliation to the University of Göttingen.

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​Maiti M, Vinutha HA, Sastry S, Heussinger C. ​Free volume under shear​. ​​The Journal of Chemical Physics. ​2015;​143​(14). ​doi:10.1063/1.4932338. 

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Authors
Maiti, Moumita; Vinutha, H. A.; Sastry, Srikanth; Heussinger, Claus
Abstract
Using an athermal quasistatic simulation protocol, we study the distribution of free volumes in sheared hard-particle packings close to, but below, the random-close packing threshold. We show that under shear, and independent of volume fraction, the free volumes develop features similar to close-packed systems - particles self-organize in a manner as to mimick the isotropically jammed state. We compare athermally sheared packings with thermalized packings and show that thermalization leads to an erasure of these structural features. The temporal evolution in particular the opening-up and the closing of free-volume patches is associated with the single-particle dynamics, showing a crossover from ballistic to diffusive behavior. (C) 2015 AIP Publishing LLC.
Issue Date
2015
Status
published
Publisher
Amer Inst Physics
Journal
The Journal of Chemical Physics 
ISSN
1089-7690; 0021-9606
Sponsor
German Science Foundation via the Emmy Noether Program [He 6322/1-1]

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