ideal plastic half-space, cylinder indentation, plane strain theory, contact friction, slip lines, velocities hodograph, dissipative function.

Numerical simulation of the plane strain ideal plastic half-space indentation by the rigid cylinder with Prandtl's contact fiction consideration is presented. The slip lines, velocities on the hodograph plane with positive dissipative function are defined by numerical calculation of differential equations of the plane strain plastic flow theory. Curved form of the stress free boundary of the plastic region, which is function of the cylinder indentation depth, is defined by the plastic incompressibility condition. The numerical simulation satisfies the full equations system of the plane strain ideal plastic theory with Mises yield criterion and positive dissipative function in the plastic region.

Nepershin Rostislav Ivanovich ,

e-mail: nepershin_ri@rambler.ru, Dr. Sci. Eng., Professor, Moscow State Technological University STANKIN, Moscow, Russia.