摘要
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.
作者
GE Bao-Liang
SHI Qing-Fan
RAM Chand
HE Jian-Feng
MA Shao-Peng
葛保亮;史庆藩;拉姆;何建锋;马少鹏(School of Physics,Beijing Institute of Technology,Beijing 100081;School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081;Government Girls Degree College,Shahdadpur,Sindh,Pakistan)
基金
the National Natural Science Foundation of China under Grant Nos 11172039 and 10975014.
