Attenuation of impact of the reflected shock wave upon an explosion inside a vessel with granular material walls

Attenuation of the impact of the reflected shock wave upon a explosion inside a vessel with granular material walls was studied. The impact on the blockage by the short shock waves, where the pressure peak is accompanied by rapid pressure decrease in the rarefaction wave was studied. To model the short blast wave, a shock tube is used with a short, high pressure chamber. The length of the square section 72 × 72 mm 2 low pressure chamber was equal to 6 m. The low pressure chamber is filled with air at atmosphere pressure; the high pressure chamber is filled with air at a pressure of 15 atm. In the high pressure chamber, during the pushing gas outflow, a rarefaction wave occurs; it reflects from the closed shock tube end and propagates into the low pressure chamber overtaking the shock wave. The shock wave attenuation is larger upon interaction with a thin wall, which is destroyed faster.