Stress distribution and surface instability of an inclined granular layer

doi:10.1088/1674-1056/22/4/040511

Abstract Static granular materials may avalanche suddenly under continuous quasi-static drives. The phenomenon, which is important for many engineering applications, can be explained by analyzing stability of elastic solutions. We show this for a granular layer driven by its inclination angle in gravity, of which elastic problem could be solved generally and analytically. It is found that a lost of stability may occur only at free surface of the layer. The result is considered to be relevant for understanding surface avalanches and flows observed by experiments.

Keywords: granular matter nonlinear elasticity stress surface instability

Received: 18 June 2012
Revised: 30 August 2012
Accepted manuscript online:

PACS:	05.70.Ce	(Thermodynamic functions and equations of state)
	45.70.Cc	(Static sandpiles; granular compaction)
	46.25.-y	(Static elasticity)
	62.20.D

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10904175).

Corresponding Authors: Jiang Yi-Min
E-mail: jiangyimin@yahoo.cn

Cite this article:

Zheng He-Peng (郑鹤鹏), Jiang Yi-Min (蒋亦民), Peng Zheng (彭政) Stress distribution and surface instability of an inclined granular layer 2013 Chin. Phys. B 22 040511

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Stress distribution and surface instability of an inclined granular layer

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