For computer simulations of the plastic deformation of heterogeneous materials necessary correct formulation of boundary value problems in the mechanics of deformable bodies, which is impossible without the use of rather complex rheological models plastically compressible media, describing the processes of plastic flow of non-compact and porous materials. The Identification of model of the stress was made on the basis of simulation modeling deformation of the cell by means of a representative

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... lume of Abaqus. Based on the flow conditions of process simulation performed molding parts of complex shape from a metal powder as an example of copper rotary ring. It is shown that when forming part density changes of deformable material, which depends on the stress-strain state of the various parts of the compact.