Numerical study of the effect of the parameters of a bulk layer and an incident shock wave on the pressure at a shielded flat wall

Results are presented from a numerical simulation to study the effect of the parameters of a porous, powdered layer and of an incident shock wave in air on the pulsed loading characteristics of a shielded flat wall. An analysis is made of the dependence of the total stress of the mixture and of the pressure of the pore gas at a rigid wall on the porosity of the medium, density of the material, particle diameter, depth of the shielding layer, and depth of the actuating shock wave. The depth of the screen is found to have the most significant effect on the amplitude of the total pressure of the powdered medium at the solid wall behind a reflected shock. A formula is obtained for estimating the number of maxima in the total pressure of the mixture at the wall during reflection of a shock wave from it.