The coordination number of granular cylindersJ. Blouwolff and S. Fraden
Complex Fluids Group, Martin Fisher School of Physics, Brandeis University Waltham, MA 02454 USA
received 16 August 2006; accepted in final form 18 October 2006
published online 16 November 2006
We report the first experimental measurements of the contact number distribution between randomly packed granular right cylinders (rods and disks) as a function of aspect ratio. The average coordination number for cylinders varies smoothly with aspect ratio rising from for aspect ratios close to one to for large aspect ratio. Additionally, our measurements demonstrate the validity of the random contact model for compacted piles of long granular cylinders.
45.70.-n - Granular systems.
© EDP Sciences 2006