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Waveguide Sound Insulation in Pipes Lined with Elastic Waterlike Material

  • CLASSICAL PROBLEMS OF LINEAR ACOUSTICS AND WAVE THEORY
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Abstract

The paper considers effect of an elastic waterlike layer placed on the wall of a water-filled waveguide on sound propagation in the waveguide. Shear oscillations excited in the layer change the effective conductivity of the waveguide wall. In a certain frequency range near the resonance frequency, the wavenumber of the sound wave is purely imaginary: the wave attenuates exponentially. The results of calculating the effectiveness of this effect are presented, and an analogy with the well-known waveguide insulation effect is drawn.

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Authors and Affiliations

  1. Andreev Acoustics Institute, 117449, Moscow, Russia

    M. A. Mironov

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  1. M. A. Mironov
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Correspondence to M. A. Mironov.

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Mironov, M.A. Waveguide Sound Insulation in Pipes Lined with Elastic Waterlike Material. Acoust. Phys. 68, 201–205 (2022). https://doi.org/10.1134/S1063771022030083

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  • DOI: https://doi.org/10.1134/S1063771022030083

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