Research of critical conditions of process of impact of a bullet of fire-arms with the plate of steel

In article results are shown of research of critical conditions of process of impact of a bullet of fire-arms with the plate of steel. Process of distruction of a steel plate in the field of punching with cutting down of stopper is investigated at impact of a bullet with a barrier. Research of a mode of punching of a barrier with cutting down of stopper has the importance for expert departments of the Ministry of Internal Affairs for the purpose of identification of the weapon with the maximum quantity of factors of identification, and for developing of methods of modelling of process of destruction of the armour, analytical calculations and empirical researches. In work the experimental research technique of punching a barrier at specially developed stand with remote descent is described. The basic classes of fire-arms for research of area of critical conditions punching barrier with cutting down of stopper are used some. Experiments for punching of a barrier with cutting down of stopper are conducted for different calibres and types of bullets of classes of short-barrelled and long-barrelled fire-arms. The analysis of process of deformation and destruction of a material of a barrier and bullet as a result of process with cutting down of stopper is made. Process with cutting down of stopper is investigated at front and lateral impact of a bullet with the steel and lead core with a barrier. The estimation of high-speed and energy modes in process with cutting down of stopper and conditions of possibility of incomplete process with cutting down of stopper is made.