Simulating the compaction of layered porous billets

An ideal rigid-plastic porous body is used as a rheological model to develop a mathematical model describing a closed matrix compacted by the axial force of porous two-layer cylindrical axisymmetric billets with different geometry, porosity of the layers, and yield stress of the base material for each layer. It is shown that the compaction rate of two-layer porous billets under deformation is determined by the combination of their parameters such as the yield stress of the base material, initial porosity, and thickness. __________ Translated from Poroshkovaya Metallurgiya, Vol. 46, No. 5–6 (455), pp. 16–21, 2007.