Behaviour of mechanical imperfection of aircraft details materials under impulse action

In the course of manufacturing or exploitation of constructual elements, there may appear some defects in them, in particular, internal microcracks and cavities or surface roughness and scratches. Under a certain impulse action, these defects can be eliminated. The level of this action, however, should be calculated beforehand. An experimental study of these processes is hindered because of their low informativeness. It is advisable in this case to use mathematical simulation. Using the software system KRUG24, the process of deformation of a material was calculated in axisymmetric and plane formulations for different levels of dynamic action. To describe the medium, we use a mathematical model of elastoplastic material and the Lagrangian approach. The governing equations are