The aim is to analyse the stability of the relative-small disturbances in the two-dimensional and three-dimensional flows of the materials with linear vector and free scalar determining correlations. The conditions at which the three-dimensional picture of the disturbances in the flat process of straining can be reduced to the two-dimensional one in the flat of this process have been formulated on base of the fundamental analysis. The integral sufficient evaluations of stability, i.e. the lower edges of the generalized critical Reynolds numbers for the viscous-plastic flows with hardening and without hardening have been obtained. It has been shown that the introduction of the fluidity limit into the linear-viscous model cannot destabilize the initial flow. The behaviour of the heavy two-layer structures consisting of the viscous-elatic material and removed from composure state has been analysed.Available from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio
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