Experimental study on the dependence of the stability of binary mixtures on the coordination number

Authors

  • Marissa G. Pastor Department of Physics, Ateneo de Manila University and National Institute of Physics, University of the Philippines Diliman
  • Johnrob Y. Bantang National Institute of Physics, University of the Philippines Diliman

Abstract

We report the effects of interstitial matter of different sizes on the angle of repose, ΘRand on stability of granular heaps in 3D. For all the heaps where the size of the interstitial matter is small enough to fill the voids between the grains, more contact points are incorporated. This caused an increase in ΘR up to a maximum greater than the limit values (ΘR of pure mixture components), implying greater stability. On the other hand, when the size of the interstitial matter approaches the size of the grains, ΘR varies negligibly and linearly between the two limit values. It was further verified using a 2D experimental setup that relatively smaller disks tend to increase the average coordination number <z> of a binary mixture of disks. Thus, the effective behavior of dry granular materials, for these experiments is subject to the size of an interstitial matter when present.

Downloads

Issue

Article ID

SPP-2007-2F-01

Section

Complex Systems

Published

2007-10-24

How to Cite

[1]
MG Pastor and JY Bantang, Experimental study on the dependence of the stability of binary mixtures on the coordination number, Proceedings of the Samahang Pisika ng Pilipinas 25, SPP-2007-2F-01 (2007). URL: https://proceedings.spp-online.org/article/view/SPP-2007-2F-01.