Numerical analysis of wave propagation in a cermet composite

Abstract

The results of numerical simulation of the propagation process of elastic-plastic compression waves during deceleration of a cermet composite by one-dimensional loading scheme are presented. The cermet composite is considered as a mixture of solid materials with a given mass concentration and ideal contact between the components. REACTOR software package developed in ITAM SB RAS is used for the modeling. Various approaches to predicting elastic-plastic characteristics, such as elastic moduli and yield strength, describing the behavior of heterogeneous materials, are considered. It is shown that the “rule of mixtures”, which approximates the magnitude of the elastic sound velocities through the volume concentration of the components, has proved to be good for calculating the elastic moduli, whereas the yield limit must be calculated through mass concentration.