Contact force distribution beneath a three-dimensional granular pile
Brockbank, R., Huntley, J. M. and Ball, R. C.. (1997) Contact force distribution beneath a three-dimensional granular pile. Journal de Physique II , Vol.7 (No.10). pp. 1521-1532. ISSN 1155-4312Full text not available from this repository.
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 > Physics|
|Library of Congress Subject Headings (LCSH):||Granular materials, Force and energy|
|Journal or Publication Title:||Journal de Physique II|
|Page Range:||pp. 1521-1532|
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