“…Yang [16] presented a unified analytical solution to the wave equation which controls the propagation of longitudinal stress waves in elastic rods. Fedotov et al [17][18][19] analysed the vibration of a Rayleigh-Bishop rod under different conditions in terms of a Green function. Tenkam et al [20] gave the analytical solution in terms of Green's functions of the Mindlin-Herrmann model for longitudinal vibration of an isotropic rod with constant cross-section.…”