Many recent studies have focused on specifics of behavior of materials under dynamic loading as it is considerably different from cases with quasi -static loading. This paper considers the method of magnetic pulse deformation of metal rings, which is a continuation of the authors' research Pt The methods used in the experiment, which are described in this paper, allow to carry out laboratory studies into material deformation at a speed reaching the values of around 10(7) c(-1). This paper is dedicated to building a mathematical model for determining the stress in the test samples under dynamic loading of materials by the magnetic pulse method.