Billet in the form of 2 plates, steel and copper, round shape, steel thickness 1mm, copper 0.1mm, bonded to each other. Copper can be considered as sprayed, either pressed or glued. I do not know how best to set the boundary conditions. A pulsed magnetic field acts on this preform. Under the influence of eddy currents, the copper substrate exfoliates from the steel base. Objective: calculate the VAT, it is desirable to see the values of imp in the division.