We find that a column of glass beads exhibits a well-defined transition between two phases that differ in their resistance to shear. Pulses of fluidization are used to prepare static sedimented states with well-defined particle volume fractions Phi in the range 0.57–0.63. The resistance to shear is determined by slowly inserting a rod into the column of beads. Force measurements and bed height measurements both indicate that the transition occurs at Phi = 0.60 for a range of speeds of the rod.
%0 Journal Article
%1 0295-5075-78-4-44004
%A Schröter, Matthias
%A Nägle, Sibylle
%A Radin, Charles
%A Swinney, Harry L.
%D 2007
%J EPL (Europhysics Letters)
%K Nägle Schröter fluidized granular phase physics transition
%N 4
%P 44004
%T Phase transition in a static granular system
%U http://stacks.iop.org/0295-5075/78/i=4/a=44004
%V 78
%X We find that a column of glass beads exhibits a well-defined transition between two phases that differ in their resistance to shear. Pulses of fluidization are used to prepare static sedimented states with well-defined particle volume fractions Phi in the range 0.57–0.63. The resistance to shear is determined by slowly inserting a rod into the column of beads. Force measurements and bed height measurements both indicate that the transition occurs at Phi = 0.60 for a range of speeds of the rod.
@article{0295-5075-78-4-44004,
abstract = {We find that a column of glass beads exhibits a well-defined transition between two phases that differ in their resistance to shear. Pulses of fluidization are used to prepare static sedimented states with well-defined particle volume fractions Phi in the range 0.57–0.63. The resistance to shear is determined by slowly inserting a rod into the column of beads. Force measurements and bed height measurements both indicate that the transition occurs at Phi = 0.60 for a range of speeds of the rod.},
added-at = {2010-10-06T11:40:18.000+0200},
author = {Schröter, Matthias and Nägle, Sibylle and Radin, Charles and Swinney, Harry L.},
biburl = {https://www.bibsonomy.org/bibtex/2ed763d453b01d20647812c6f585681c2/naegle},
interhash = {1c5a96637eade306ccf83a36f3d4e4eb},
intrahash = {ed763d453b01d20647812c6f585681c2},
journal = {EPL (Europhysics Letters)},
keywords = {Nägle Schröter fluidized granular phase physics transition},
number = 4,
pages = 44004,
timestamp = {2011-08-21T21:12:42.000+0200},
title = {Phase transition in a static granular system},
url = {http://stacks.iop.org/0295-5075/78/i=4/a=44004},
volume = 78,
year = 2007
}