Soft-sphere packings at finite pressure but unstable to shear

Simon Dagois-Bohy, Brian P. Tighe, Johannes Simon, Silke Henkes, Martin van Hecke

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

When are athermal soft-sphere packings jammed? Any experimentally relevant definition must, at the very least, require a jammed packing to resist shear. We demonstrate that widely used (numerical) protocols, in which particles are compressed together, can and do produce packings that are unstable to shear-and that the probability of generating such packings reaches one near jamming. We introduce a new protocol which, by allowing the system to explore different box shapes as it equilibrates, generates truly jammed packings with strictly positive shear moduli G. For these packings, the scaling of the average of G is consistent with earlier results, while the probability distribution P(G) exhibits novel and rich scalings.

Original languageEnglish
Article number095703
Number of pages5
JournalPhysical Review Letters
Volume109
Issue number9
DOIs
Publication statusPublished - 27 Aug 2012

Cite this

Dagois-Bohy, S., Tighe, B. P., Simon, J., Henkes, S., & van Hecke, M. (2012). Soft-sphere packings at finite pressure but unstable to shear. Physical Review Letters, 109(9), [095703]. https://doi.org/10.1103/PhysRevLett.109.095703

Soft-sphere packings at finite pressure but unstable to shear. / Dagois-Bohy, Simon; Tighe, Brian P.; Simon, Johannes; Henkes, Silke; van Hecke, Martin.

In: Physical Review Letters, Vol. 109, No. 9, 095703, 27.08.2012.

Research output: Contribution to journalArticle

Dagois-Bohy, S, Tighe, BP, Simon, J, Henkes, S & van Hecke, M 2012, 'Soft-sphere packings at finite pressure but unstable to shear' Physical Review Letters, vol. 109, no. 9, 095703. https://doi.org/10.1103/PhysRevLett.109.095703
Dagois-Bohy S, Tighe BP, Simon J, Henkes S, van Hecke M. Soft-sphere packings at finite pressure but unstable to shear. Physical Review Letters. 2012 Aug 27;109(9). 095703. https://doi.org/10.1103/PhysRevLett.109.095703
Dagois-Bohy, Simon ; Tighe, Brian P. ; Simon, Johannes ; Henkes, Silke ; van Hecke, Martin. / Soft-sphere packings at finite pressure but unstable to shear. In: Physical Review Letters. 2012 ; Vol. 109, No. 9.
@article{ede01c2b8fff4b8b9c8aaa595036792d,
title = "Soft-sphere packings at finite pressure but unstable to shear",
abstract = "When are athermal soft-sphere packings jammed? Any experimentally relevant definition must, at the very least, require a jammed packing to resist shear. We demonstrate that widely used (numerical) protocols, in which particles are compressed together, can and do produce packings that are unstable to shear-and that the probability of generating such packings reaches one near jamming. We introduce a new protocol which, by allowing the system to explore different box shapes as it equilibrates, generates truly jammed packings with strictly positive shear moduli G. For these packings, the scaling of the average of G is consistent with earlier results, while the probability distribution P(G) exhibits novel and rich scalings.",
author = "Simon Dagois-Bohy and Tighe, {Brian P.} and Johannes Simon and Silke Henkes and {van Hecke}, Martin",
year = "2012",
month = "8",
day = "27",
doi = "10.1103/PhysRevLett.109.095703",
language = "English",
volume = "109",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "9",

}

TY - JOUR

T1 - Soft-sphere packings at finite pressure but unstable to shear

AU - Dagois-Bohy, Simon

AU - Tighe, Brian P.

AU - Simon, Johannes

AU - Henkes, Silke

AU - van Hecke, Martin

PY - 2012/8/27

Y1 - 2012/8/27

N2 - When are athermal soft-sphere packings jammed? Any experimentally relevant definition must, at the very least, require a jammed packing to resist shear. We demonstrate that widely used (numerical) protocols, in which particles are compressed together, can and do produce packings that are unstable to shear-and that the probability of generating such packings reaches one near jamming. We introduce a new protocol which, by allowing the system to explore different box shapes as it equilibrates, generates truly jammed packings with strictly positive shear moduli G. For these packings, the scaling of the average of G is consistent with earlier results, while the probability distribution P(G) exhibits novel and rich scalings.

AB - When are athermal soft-sphere packings jammed? Any experimentally relevant definition must, at the very least, require a jammed packing to resist shear. We demonstrate that widely used (numerical) protocols, in which particles are compressed together, can and do produce packings that are unstable to shear-and that the probability of generating such packings reaches one near jamming. We introduce a new protocol which, by allowing the system to explore different box shapes as it equilibrates, generates truly jammed packings with strictly positive shear moduli G. For these packings, the scaling of the average of G is consistent with earlier results, while the probability distribution P(G) exhibits novel and rich scalings.

U2 - 10.1103/PhysRevLett.109.095703

DO - 10.1103/PhysRevLett.109.095703

M3 - Article

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 9

M1 - 095703

ER -