The Open Acoustics Journal

2008, 1 : 15-18
Published online 2008 March 4. DOI: 10.2174/1874837600801010015
Publisher ID: TOACOJ-1-15

A Wave Near the Edge of a Circular Disk

M. Destrade and Y.B. Fu
Institut Jean Le Rond d'Alembert, CNRS, Université Pierre et Marie Curie, Boite 162, 4 Place Jussieu, 75252 Paris Cedex 05, France.

ABSTRACT

It is shown that in the Love-Kirchhoff plate theory, an edge wave can travel in a circular thin disk made of an isotropic elastic material. This disk edge wave turns out to be faster than the classic flexural acoustic wave in a straightedged, semi-infinite, thin plate, a wave which it mimics when the curvature radius becomes very large compared to the wavelength.