Brockbank, R., Huntley, J. M. and Ball, Robin (1997) Contact force distribution beneath a three-dimensional granular pile. Journal de Physique II , Vol.7 (No.10). pp. 1521-1532.

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Abstract

A simple elasto-optical method has been used to measure
the normal force distribution under three-dimensional conical piles, for a range of granular materials. The method
is based on the measurement of contact diameters of
a monolayer of steel balls between the pile and an
elastomeric substrate. Experiments on sandpiles confirm the existence of counterintuitive dips in the pressure at the centre of the pile, as reported previously in the literature; the dips were also found in piles of small (ca. 180 pm diameter) glass beads. They were suppressed, however,
on increasing the glass bead diameter by a factor of
ca. 3. Variations in surface roughness were found to have little effect on the pressure profiles. The probability density function for the normal contact force was
approximately negative exponential in form.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH):	Granular materials, Force and energy
Journal or Publication Title:	Journal de Physique II
Publisher:	Springer
ISSN:	1155-4312
Official Date:	October 1997
Dates:	Date Event October 1997 Published
Volume:	Vol.7
Number:	No.10
Page Range:	pp. 1521-1532
Status:	Peer Reviewed
Publication Status:	Published

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