MACRORHEOLOGICAL THEORY OF HOT COMPACTION OF COMPOSITES

The present work presents the results of mathematical modeling of defo rmation and thermal processes of compaction of viscous compressible ma terials. An analytical solution of the problem of one-sided compressio n and extrusion of powder materials is found which enables us to estab lish different regimes of compaction and extrusion and to find criteri al conditions for their realization at a qualitative level. The numeri cal analysis of the influence of the nonuniformity of the thermal regi me and the conditions of heat transfer on the regularities of compacti on nd extrusion of the materials is performed. It is shown how the mod els developed facilitate the solution of practical problems of produci ng the concrete items.