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Directional shear jamming of frictionless ellipses

Trulsson, Martin LU orcid (2021) In Physical Review E 104(4).
Abstract

In this work we study shear reversals of dense non-Brownian suspensions composed of cohesionless elliptical particles. By numerical simulations, we show that a new fragility appears for frictionless ellipses in the flowing states, where particles can flow indefinitely in one direction at applied shear stresses but shear jam in the other direction upon shear stress reversal. This new fragility, absent in the isotropic particle case, is linked to the directional order of the elongated particles at steady shear and its reorientation at shear stress reversal, which forces the suspensions to pass through a more disordered state with an increased number of contacts in which it might get arrested.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review E
volume
104
issue
4
article number
044614
publisher
American Physical Society
external identifiers
  • scopus:85119403789
  • pmid:34781452
ISSN
2470-0045
DOI
10.1103/PhysRevE.104.044614
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 authors.
id
dc57fcd4-efdc-47a3-bd75-9bac3f17b641
date added to LUP
2021-12-20 16:50:03
date last changed
2024-09-08 07:05:54
@article{dc57fcd4-efdc-47a3-bd75-9bac3f17b641,
  abstract     = {{<p>In this work we study shear reversals of dense non-Brownian suspensions composed of cohesionless elliptical particles. By numerical simulations, we show that a new fragility appears for frictionless ellipses in the flowing states, where particles can flow indefinitely in one direction at applied shear stresses but shear jam in the other direction upon shear stress reversal. This new fragility, absent in the isotropic particle case, is linked to the directional order of the elongated particles at steady shear and its reorientation at shear stress reversal, which forces the suspensions to pass through a more disordered state with an increased number of contacts in which it might get arrested.</p>}},
  author       = {{Trulsson, Martin}},
  issn         = {{2470-0045}},
  language     = {{eng}},
  number       = {{4}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review E}},
  title        = {{Directional shear jamming of frictionless ellipses}},
  url          = {{http://dx.doi.org/10.1103/PhysRevE.104.044614}},
  doi          = {{10.1103/PhysRevE.104.044614}},
  volume       = {{104}},
  year         = {{2021}},
}