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Numerical Analysis of Acoustic Wave Propagation along the Azimuthal Direction in the Cylindrically Layered Waveguides by Finite-Element Method

Masanori KOSHIBA, Masaya OKADA, Michio SUZUKI

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Summary :

A finite-element analysis is presented for predicting dispersion characteristics of acoustic waves propagating along the azimuthal direction in the cylindrically layered waveguides. The mathematical formulations are presented for both Rayleigh-type (or Lamb-type) waves and SH-type waves. The validity of the method is confirmed by comparing numerical results for Rayleigh waves and SH-type piezoelectric surface waves propagating along the convex cylindrical surface with those obtained analytically. We also demonstrate the application of this approach by analyzing the propagation problem of a waveguide composed of a cylindrical metal layer of finite thickness on the convex cylindrical surface.

Publication
IEICE TRANSACTIONS on transactions Vol.E66-E No.1 pp.1-5
Publication Date
1983/01/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Acoustic Waveguides

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