Pressure distribution and critical exponent in statically jammed and shear-driven frictionless disks
2014 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, Vol. 89, no 2, 022201- p.Article in journal (Refereed) Published
We numerically study the distributions of global pressure that are found in ensembles of statically jammed and quasistatically sheared systems of bidisperse, frictionless disks at fixed packing fraction phi in two dimensions. We use these distributions to address the question of how pressure increases as phi increases above the jamming point phi(J), p similar to |phi - phi(J) |(y). For statically jammed ensembles, our results are consistent with the exponent y being simply related to the power law of the interparticle soft-core interaction. For sheared systems, however, the value of y is consistent with a nontrivial value, as found previously in rheological simulations.
Place, publisher, year, edition, pages
2014. Vol. 89, no 2, 022201- p.
jamming, granular matter, critical exponents, pressure ditribution
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:umu:diva-84194DOI: 10.1103/PhysRevE.89.022201ISI: 000332178900011OAI: oai:DiVA.org:umu-84194DiVA: diva2:680180
Originally published in dissertation in manuscript form.2013-12-172013-12-172014-05-16Bibliographically approved