The attenuation of stress wave and energy absorption in the coral sand were respectively investigated in this study. A series of experiments were carried out by using a new methodology with an improved split Hopkinson pressure bar (SHPB). Four kinds of coral sand, i.e., particle sizes of 1.18-0.60mm, 0.60-0.30mm, 0.30-0.15mm, and 0.15-0.075mm, are carefully sieved and tested. Significant effects of coral sand on attenuation of stress wave and energy absorption are observed, where, the correlation between the stress wave attenuation and energy absorption of coral sand is also validated. A similar conclusion was drawn on stress wave attenuation and energy absorption from the test results. There exists a common critical stress zone for the sieved coral sands, when the stress below this zone, sand with small particle size attenuates more stress wave and absorb greater energy; when the stress beyond this zone, sand with greater particle size behaves better on stress wave attenuation and energy absorption.
Previous Article in event
Next Article in event
Stress attenuation and energy absorption of the coral sand with different particle sizes under impacts
Published: 12 July 2018 by MDPI in The Eighteenth International Conference of Experimental Mechanics session ICEM 2018
Keywords: coral sand; particle size; stress wave attenuation; energy absorption; SHPB