Abstract
The paper describes experimental measurement of pressure in marble chips placed in cylindrical reservoir subjected to weak impacting within a long time. It is found that pressure in the granular material changes non-monotonically but fluctuates relative to hydrostatic pressure with the amplitude equaling order of magnitude of the latter. The fractal analysis of the experimental curves of pressure and number of impacts is performed. The Hurst exponent ranges as 0.67–0.73, and the process of pressure variation is fractal and possesses long-term “memory.”
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