Fluctuations in apparent mass at the bottom of granular columns due to different arrangements |
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| Authors: | Ram Chand Qingfan Shi Abdul Qadir Shaopeng Ma Gang Sun |
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| Institution: | 1. School of Physics, Beijing Institute of Technology, Beijing 100081, China;2. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;3. Beijing National Laboratory for Condensed Matter Physics and Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | We report the fluctuations in apparent mass at the bottom of granular columns due to various configurations. It is found that the fluctuations decrease with the increase in the ratio of diameters of silo to grain. For the arrangement of different grain layers in a column, the higher fluctuations appear when the larger grains are stacked at the bottom layer while reversing the order of grain-layers leads to smaller fluctuations. We attribute this behavior to the randomness in the direction of frictional forces between the grains and the confining wall. Moreover, due to polydisperse media, the development of inhomogeneous force transmission in grains may cause this to happen. |
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| Keywords: | Fluctuation Granular material |
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