Air Blast from a Moving Charge on a Moving Target

Numerical study was conducted to analyze the effect of a moving charge on a stationary target. As was found earlier, the shock wave emanating from the moving charge is spherical although the pressures in the direction of movement are much greater than those in the opposite one. The analysis was conducted by running Autodyn 2D and 3D, assuming the target is rigid and either stationary or moves parallel to the charge. The reflected pressures and the overall force on the target were measured for a moving 1 Kg charge at various velocities. The results show that the load on the target increases significantly if the explosion is in air and the intensity of this load depends strongly on the charge velocity.