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 ...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.展开更多
基金the National Natural Science Foundation of China under Grant Nos 11172039 and 10975014.
文摘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.
