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Dependence of effective screening length in granular columns on bead and silo sizes and their ratio |
Ali Shah, Ahmed Khan, Saeed Ahmed Khan |
Department of Electrical Engineering Sukkur Institute of Business Administration Sindh, Pakistan |
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Abstract Apparent mass measurements at the bottom of silo have been carried out. An important parameter in the Janssen model known as the effective screening length has been investigated for different bead and silo diameters as well as of their ratios. It is found that the effective screening length augments with the grain diameter d in addition to the granular column size. It is also revealed that λ exhibits stronger correlation with the bead diameter than that of silo. This phenomenon is attributed to the reduced-shielding of the vertical stresses to the horizontal ones.
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Received: 19 November 2012
Revised: 23 December 2012
Accepted manuscript online:
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PACS:
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83.80.Fg
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(Granular solids)
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45.70.Cc
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(Static sandpiles; granular compaction)
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45.70.-n
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(Granular systems)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10675018 and 10674157) and the Department of Electrical Engineering, Sukkur Institute of Business Administration, Sukkur, Sindh, Pakistan. |
Corresponding Authors:
Ali Shah
E-mail: aqadir@iba-suk.edu.pk
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Cite this article:
Ali Shah, Ahmed Khan, Saeed Ahmed Khan Dependence of effective screening length in granular columns on bead and silo sizes and their ratio 2013 Chin. Phys. B 22 058301
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