中国物理B ›› 2010, Vol. 19 ›› Issue (3): 34601-034601.doi: 10.1088/1674-1056/19/3/034601

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Effects of granular size on stress transmission in a granular column

孙刚1, 阿不都拉2, 史庆藩2, 梁宣文2   

  1. (1)Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (2)Department of Physics, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2009-06-07 修回日期:2009-07-19 出版日期:2010-03-15 发布日期:2010-03-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~10675018 and 10674157).

Effects of granular size on stress transmission in a granular column

Abdul Qadir(阿不都拉)a), Shi Qing-Fan(史庆藩) a), Liang Xuan-Wen(梁宣文)a), and Sun Gang(孙刚) b)†   

  1. a Department of Physics, Beijing Institute of Technology, Beijing 100081, China; b Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2009-06-07 Revised:2009-07-19 Online:2010-03-15 Published:2010-03-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.~10675018 and 10674157).

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摘要： We investigate the deflection and the fluctuation of stresses due to different sizes of granular material in a cylindrical column. It is experimentally observed that the saturation mass systemically increases with granule diameter . The results indicate the shielding of vertical stress in silo is varying. We show that the ratio between the horizontal and the vertical stresses, K, decreases with the increase in grainule diameter D. In addition, it has also been found that the presence of larger granules leads to stronger stress fluctuation on the bottom plate of silo.

Abstract: We investigate the deflection and the fluctuation of stresses due to different sizes of granular material in a cylindrical column. It is experimentally observed that the saturation mass systemically increases with granule diameter . The results indicate the shielding of vertical stress in silo is varying. We show that the ratio between the horizontal and the vertical stresses, K, decreases with the increase in grainule diameter d. In addition, it has also been found that the presence of larger granules leads to stronger stress fluctuation on the bottom plate of silo.

Key words: fluctuations, stress transmission granular materials

中图分类号:  (Granular systems)

  • 45.70.-n
46.70.De (Beams, plates, and shells) 46.35.+z (Viscoelasticity, plasticity, viscoplasticity)