Abstract
An analysis is presented for the evaluation of frequency spectra and mode configurations of orthotropic microsound waveguides of arbitrary cross section. The analysis is based on the extended Rayleigh-Ritz energy method together with the concept of discretization of the guide cross section. The formulation satisfies all the bound- ary conditions and extracts with high accuracy a predeter- mined number of lowest frequencies and their modes. The method is employed to study the behavior of several different types of microsound surface waveguides of general interest. The results and their discussions reveal the influences of cross- sectional geometry and material properties on guide's perfor- mance. The solutions offered are general and provide a useful basis for the design of microsound surface waveguides.
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