Volume 78, Number 4, May 2007
|Number of page(s)||4|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||10 May 2007|
Phase transition in a static granular system
Physics Department and Center for Nonlinear Dynamics, University of Texas at Austin - Austin, TX 78712, USA
2 Mathematics Department, University of Texas at Austin - Austin, TX 78712, USA
Accepted: 11 April 2007
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 in the range 0.570.63. 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 for a range of speeds of the rod.
PACS: 45.70.Cc – Static sandpiles; granular compaction / 81.05.Rm – Porous materials; granular materials / 45.70.-n – Granular systems
© Europhysics Letters Association, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.