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A silo of which the pressure on the bottom of granular matter does not go to saturation

Jiang Yi-Min Zheng He-Peng

A silo of which the pressure on the bottom of granular matter does not go to saturation

Jiang Yi-Min, Zheng He-Peng
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  • Abstract views:  3853
  • PDF Downloads:  948
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Publishing process
  • Received Date:  23 April 2007
  • Accepted Date:  02 April 2008
  • Published Online:  20 November 2008

A silo of which the pressure on the bottom of granular matter does not go to saturation

  • 1. (1)中南大学物理科学与技术学院,长沙 410083; (2)中南大学物理科学与技术学院,长沙 410083;中南大学粉末冶金国家重点实验室,长沙 410083

Abstract: As height increases a vertical granular column in a bin can transfer its weight the side wall gradually, then pressure at bottom ceases to increase with the height and reaches to saturation. However it is notable that not every granular column will stay in this stress status with saturation, known as the silo-effect. For example, when mechanical environments of the side wall are modified such that it is unable to take on the weight of granular matter, the bottom pressure will evidently increase linearly with the height. This work analyzes using the assumptions given by Janssen the behavior of this rather unusual granular column, which is in static mechanical equilibrium but does not have a stress saturation as in conventional silos.

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