Abstract
Pulse propagation in a finite coaxial circular cylinder made of two elastic materials is solved numerically. In the first stage the natural frequencies of the free rod, including those of the higher modes, are determined and used to qualitatively predict dispersion of a pulse. In the second stage modal analysis is used to determine dispersion of the pulse and to obtain distribution of axial stress and displacement and shear stress along the radius of the cylinder. It is shown that in highly anisotropic composite rods large dispersion may occur even when the wavelength is large compared to the rod diameter.
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