METHODS OF CONTROLLING BOUNDARY TRANSPARENCY IN NON-HOMOGENOUS ELASTIC WAVEGUIDES
نویسندگان
چکیده
The work is devoted to the development of methods for controlling efficiency energy transfer in a composite elastic waveguide. Based on analysis scattered field at boundary stepped waveguide, formed by rigid contact two half-layers with same mechanical characteristics, but different thicknesses, main factors that affect transparency interface were established. Harmonic oscillations generated first normal wave propagating from infinity narrower half-layer considered. Mathematical difficulties posed problem are due presence local singularity stresses point change conditions hemispheres. solution built superposition method, which allows taking into account asymptotic features unknowns. quality criterion obtained was control accuracy fulfillment conjugation half-layers. attention focused establishing changing depending frequencies, symmetry oscillations, and ratio widths. It shown both symmetric antisymmetric there frequency ranges changes significantly. For types symmetry, range up critical third wave, increases rather sharply. frequencies maxima observed reflected anti-symmetric oscillations. maximum when only one can propagate This effect increase role inhomogeneous waves transmitted field. second transformation incident higher orders. In case resonance depends significantly established make it possible develop recommendations
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ژورنال
عنوان ژورنال: Vìsnik Nacìonal?nogo tehnì?nogo unìversitetu "Harkìvs?kij polìtehnì?nij ìnstitut"
سال: 2023
ISSN: ['2222-0631']
DOI: https://doi.org/10.20998/2222-0631.2023.01.13