THE STRESS STRAIN STATE IN THE PROCESS OF DEFORMABLE INDENTER PENETRATION INTO THE ELECTROCONDUCTIVE HALF SPACE IN THE PRESENCE OF DISCHARGE CURRENT
The main goal of this work is to study the influence of the discharge current on the characteristic values of penetration. As it has turned out, LRC circuit parameters, the impact velocity, the type of discharge current significantly influence the penetration. However, as experiments and numerical calculations have shown, an important role plays the distance between the target and the plate . It is known that the electron plastic effect depends on the current value, direction of , as well as the current exposure time. It follows that the distance of the plate from the target also influences the electron plastic effect, which occurs in the
penetrating indenter on the segment between the contact surface of the deformed indenter with the crater and the plate, with a crater. Because the length of the segment affects the closed LRC circuit time, and which, in its turn, affects the time of discharge current on the plastic properties of the indenter, as well as the duration of the Ampere force as a pinch effect becomes essential. From a practical point of view, it is important to study the problem of the indenter (jump) rebound from the crater. For this purpose, approximate estimates were carried out in  for the deformable indenter. The (jump) rebound of the indenter may occur due to the fact that after stopping the indenter in a half space or in the case when the depth of penetration is less than the thickness of the target, in the target, due to the elastic, (stored) accumulated in the indenter and the target stresses, the reverse motion of the indenter takes place. Thus, if the friction forces between the indenter and the target are less critical, a (jump) rebound of the indenter from the crater occurs. This phenomenon was observed at the experiments, when the barrier was shot in the presence of the current. The blunting of the indenter and the pressing force in the target create favorable conditions for rebound.