Multi-control-volume analysis of elastic and plastic wave fronts in composite materials

Abstract

A multi-control-volume method is developed to predict the wave velocities and stresses in the elastic and plastic regions of layered composites. From the method, the wave velocities and stresses may be calculated from the constitutive relations of its constituents. The interfacial shearing force may then be computed. Two composites boron/aluminum and graphite/C-7 epoxy have been used for sample calculations. The results from the boron/aluminum composite indicate that the elastic and plastic waves may merge to form a shock at large impact velocities.