Recent simulations have predicted that near jamming for collections of spherical particles, there will be
a discontinuous increase in the mean contact number Z at a critical volume fraction c . Above c , Z and
the pressure P are predicted to increase as power laws in ÿ c . In experiments using photoelastic disks
we corroborate a rapid increase in Z at c and power-law behavior above c for Z and P. Specifically we
find a power-law increase as a function of ÿ c for Z ÿ Zc with an exponent around 0.5, and for P
with an exponent around 1.1. These exponents are in good agreement with simulations. We also find
reasonable agreement with a recent mean-field theory for frictionless particles.
%0 Journal Article
%1 majmudar:058001
%A Majmudar, T. S.
%A Sperl, M.
%A Luding, S.
%A Behringer, R. P.
%D 2007
%I APS
%J Physical Review Letters
%K jamming granular disk photoelastic physics imported
%N 5
%P 058001
%T Jamming Transition in Granular Systems
%U http://link.aps.org/abstract/PRL/v98/e058001
%V 98
%X Recent simulations have predicted that near jamming for collections of spherical particles, there will be
a discontinuous increase in the mean contact number Z at a critical volume fraction c . Above c , Z and
the pressure P are predicted to increase as power laws in ÿ c . In experiments using photoelastic disks
we corroborate a rapid increase in Z at c and power-law behavior above c for Z and P. Specifically we
find a power-law increase as a function of ÿ c for Z ÿ Zc with an exponent around 0.5, and for P
with an exponent around 1.1. These exponents are in good agreement with simulations. We also find
reasonable agreement with a recent mean-field theory for frictionless particles.
@article{majmudar:058001,
abstract = { Recent simulations have predicted that near jamming for collections of spherical particles, there will be
a discontinuous increase in the mean contact number Z at a critical volume fraction c . Above c , Z and
the pressure P are predicted to increase as power laws in ÿ c . In experiments using photoelastic disks
we corroborate a rapid increase in Z at c and power-law behavior above c for Z and P. Specifically we
find a power-law increase as a function of ÿ c for Z ÿ Zc with an exponent around 0.5, and for P
with an exponent around 1.1. These exponents are in good agreement with simulations. We also find
reasonable agreement with a recent mean-field theory for frictionless particles.
},
added-at = {2007-02-07T17:22:53.000+0100},
author = {Majmudar, T. S. and Sperl, M. and Luding, S. and Behringer, R. P.},
biburl = {https://www.bibsonomy.org/bibtex/2b88d31c9c2957ac7db812a77279f693f/andreab},
eid = {058001},
interhash = {f19f0a1d87ca0414b179a4137d539072},
intrahash = {b88d31c9c2957ac7db812a77279f693f},
journal = {Physical Review Letters},
keywords = {jamming granular disk photoelastic physics imported},
number = 5,
numpages = {4},
pages = 058001,
publisher = {APS},
timestamp = {2007-02-07T17:22:53.000+0100},
title = {Jamming Transition in Granular Systems},
url = {http://link.aps.org/abstract/PRL/v98/e058001},
volume = 98,
year = 2007
}