A subset of the critical frequencies of normal waves in orthotropic prismatic waveguide equilateral triangular cross-section
Keywords:
longest orthotropic prismatic waveguide, equilateral triangular cross-section, fixed or free lateral surface, normal elastic waves, critical frequency, flexural vibrations of cross-sectional, dependence on the anisotropy parametersAbstract
Is presented the technique use of triangular coordinates for finding of values of the critical frequencies of normal waves in orthotropic prismatic waveguide equilateral triangular cross-section with fixed or free from stress boundary surfaces. Determined the critical frequencies at which the plane of cross section of the waveguide makes flexural vibrations and running normal waves are generated as longitudinal. Is illustrated dependence of the lowest critical frequencies that are studied from the relations for moduli of longitudinal shear in orthogonal elastic-equivalent directions which characterizes degree of anisotropy waveguide for a waveguide with a fixed lateral surfaceReferences
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