Propagation,Dispersion, and Localization of Elastic Waves in Low-Symmetric Anisotropic Waveguides |
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Authors: | Volobueva T V Storozhev V I |
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Institution: | (1) Department of Elasticity Theory and Computational Mathematics of the, Donetsk State University, Donetsk, Ukraine |
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Abstract: | The results of a theoretical investigation into ultrasonic linear normal wavefields in anisotropic three-dimensional bodies with mechanical orthorhombic symmetry are presented. A detailed study is made of the dispersion dependencies for higher normal wave modes in a single-layered orthorhombic plate-type waveguide. Moreover, the distribution of complex branches corresponding to the edge standing wave modes is studied and their role in the transformation of the entire spectrum upon a change in the travel direction in the waveguide plane is analyzed. A new type of localization of the higher modes of high-frequency short-range normal waves in a crystal layer is described. An efficient method is developed for studying the spectrum of ultrasonic normal waves in a circular cylindrical waveguide made of an orthorhombic monocrystal |
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