elasticity, viscoplasticity, the big deformations, the residual pressures

Deformation of the elastoviscoplastic environment between two rigid coaxial cylinders at turn of one of them is considered. An environment is weakened by a layer of more pliable material. The decision is under construction within the limits of a big elastoviscoplastic deformations’ model. A reversible deformation, a visco-plastic current, a case of a stop of the cylinder and its deformation at turn in the opposite direction are considered. The movement laws of the borders of developing areas of the visco-plastic currents at various speeds of turn of surfaces are received.