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The influence of flow rate on the decrease in pressure beneath a conical pile

โœ Scribed by Jianguo Liu; Qicheng Sun; Feng Jin

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
602 KB
Volume
212
Category
Article
ISSN
0032-5910

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โœฆ Synopsis

The decrease in the stress at the bottom of a sandpile exhibits the preparation dependence known to occur for granular materials. By using a grid-based tactile pressure sensor, we carefully measured the progressive development of the pressure profile at the bottom of conical piles formed by funneling rice grains onto the sensor. A significant decrease in the stress was observed at small flow rates, but it gradually disappeared at greater flow rates. This result is helpful in understanding the stress distribution within sandpiles.

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