Waves in Unbounded Structures

Despite their infinite dimensions propagation of elastic waves in unbounded engineering structures can be successfully analysed by the use of FEM [1]. This can be achieved by numerous computational techniques, which can be employed for this purpose and which are able to mimic the properties of unbounded structures. The primary and main feature of these techniques is their ability to simulate the process of diffusion of propagating waves, which allows the wave energy to be transferred from the region of interest out to infinity with no reflections, conforming with the Sommerfeld radiation condition