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The effect of a surface impedance load on the behavior of quasi-Rayleigh waves near a cylindrical cavity

  • Classical Problems of Linear Acoustics and Wave Theory
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Abstract

The effect of a surface impedance load on the properties of axisymmetric quasi-Rayleigh waves propagating along the boundaries of a cylindrical cavity is investigated. By solving the problem by means of the impedance method, a dispersion equation for these waves is obtained. It is shown that the equation can be represented as the condition that the determinant of the sum of impedance matrices of the load and the medium is zero. Analysis of this equation allows one to investigate the effect of the surface load on the behavior of quasi-Rayleigh waves and on their critical frequencies. The conditions that should be met by the impedance load for quasi-Rayleigh waves to be absent near the cavity or for one or two such waves to exist are determined. The choice of the load is specified for the propagating quasi-Rayleigh wave to possess preset dispersion properties. The conclusions drawn on the basis of this study are illustrated by several examples of load models that can be implemented in practice.

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Correspondence to V. V. Tyutekin.

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Tyutekin, V.V., Syresin, D.E. & Zharnikov, T.V. The effect of a surface impedance load on the behavior of quasi-Rayleigh waves near a cylindrical cavity. Acoust. Phys. 56, 422–428 (2010). https://doi.org/10.1134/S1063771010040032

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  • DOI: https://doi.org/10.1134/S1063771010040032

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