Research on Simulation Model of Unexploded Ordnance Destruction Based on Sniping Method

Abstract

To evaluate the ability of the sniping method to destroy unexploded ordnance, a simulation model of bullet impact on 38mm stun grenades was established with the SPH-FEM coupling method. The destruction process of unexploded ordnance and residual velocity and direction of the bullet were analyzed at different conditions of impact positions and velocities. The results show that axial or radial top position impact of unexploded ordnance can completely separate primary explosive and main charge, which is more thorough than radial middle and bottom position impact; When shooting at a distance of 50m-250m, unexploded ordnance can be effectively destroyed, with little difference in velocity attenuation. However, after penetrating unexploded ordnance, the flight direction of the bullet will change by 1 ° to 7 °. In conclusion, the simulation model can effectively calculate the process of ordnance destruction and the flight of the bullet; the sniping method prioritizes the use of axial or radial top propellant position impact; The impact bullet has a deviation in flight direction, and it is necessary to take good safety measures in the shooting range to avoid ricocheting out of the field.