J. Phys. I France
Volume 3, Numéro 4, April 1993
Page(s) 905 - 908
DOI: 10.1051/jp1:1993171
J. Phys. I France 3 (1993) 905-908

Structural properties of planar random heap of hard discs

M. Acharyya

Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Calcutta-700064, India

(Received 6 January 1992, accepted in final form 22 January 1992)

We study here numerically the average angle of repose ( $\theta_{\rm r}$) and the packing fraction ( $\rho_{\rm r}$) of a random (two dimensional) heap of hard discs falling (under gravity) ballistically on a (sticky) base line, where the first layer of discs gets quenched in random positions. We find $\theta_{\rm r}\cong52^\circ$ and $\rho_{\rm r}\cong0.80$ for such heaps. We also study the pressure or load distribution on the base line of such a random heap.

05.70 - 46.10

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