The Nature of Stresses in a Giant Static Granular Column

We systematically investigate the mean pressure measurements at the bottom of a giant static, granular column. If a constant overload is placed on top of the bed, the pressure observed displays linearity in overload and non-monotonic in column height. This result is in contradiction with the classic...

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Bibliographic Details
Published in:Chinese physics letters 2013-04, Vol.30 (4), p.48101-1-048101-3
Main Authors: Ge, Bao-Liang, Shi, Qing-Fan, Ram, Chand, He, Jian-Feng, Ma, Shao-Peng
Format: Article
Language:English
Subjects:
Accuracy
Constants
Displays
Linearity
Pressure measurement
Stresses
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Summary:We systematically investigate the mean pressure measurements at the bottom of a giant static, granular column. If a constant overload is placed on top of the bed, the pressure observed displays linearity in overload and non-monotonic in column height. This result is in contradiction with the classical Janssen model. However it is in good agreement with the oriented stress linearity (OSL) model which reveals a local, linear relation between stress components. We conclude that the OSL model works well not only in a tiny static, granular column but also in a giant static, granular column.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/30/4/048101