Dependence of effective screening length in granular columns on bead and silo sizes and their ratio

doi:10.1088/1674-1056/22/5/058301

中国物理B ›› 2013, Vol. 22 ›› Issue (5): 58301-058301.doi: 10.1088/1674-1056/22/5/058301

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

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

收稿日期:2012-11-19 修回日期:2012-12-23 出版日期:2013-04-01 发布日期:2013-04-01
基金资助:
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.

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

Received:2012-11-19 Revised:2012-12-23 Online:2013-04-01 Published:2013-04-01
Contact: Ali Shah E-mail:aqadir@iba-suk.edu.pk
Supported by:
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.

摘要/Abstract

摘要： 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.

关键词: granular systems, granular solids, static sand piles, granular compaction

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.

Key words: granular systems, granular solids, static sand piles, granular compaction

中图分类号: (Granular solids)

83.80.Fg

45.70.Cc (Static sandpiles; granular compaction) 45.70.-n (Granular systems)

Ali Shah, Ahmed Khan, Saeed Ahmed Khan. Dependence of effective screening length in granular columns on bead and silo sizes and their ratio[J]. 中国物理B, 2013, 22(5): 58301-058301.

Ali Shah, Ahmed Khan, Saeed Ahmed Khan. Dependence of effective screening length in granular columns on bead and silo sizes and their ratio[J]. Chin. Phys. B, 2013, 22(5): 58301-058301.

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Dependence of effective screening length in granular columns on bead and silo sizes and their ratio

Dependence of effective screening length in granular columns on bead and silo sizes and their ratio

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