Transient Wave Propagation in Periodically Layered Media

Abstract

In this paper, transient wave propagation in periodically layered composites consisting of alternating isotropic and homogeneous high-strength reinforcing and low-strength matrix layers is investigated. First, some results from our recently published work^1,2 will be given. In our recent work,^1,2 the propagation of dilatational waves is investigated. The layers of the composite medium can be plane, circular cylindrical or spherical. Furthermore, the layers can be linearly thermoelastic or linearly viscoelastic. The viscoelastic material of the bodies is modelled as a standard linear solid. A common formulation is used for the three types of layered media. The bodies are subjected to uniform time-dependent dynamic inputs at their inner surfaces and the outer surfaces are either fixed or free. The composite bodies are initially at rest.