This article is cited in 1 paper

Diffraction of a plane sound wave on a thermoelastic sphere with a discretely inhomogeneous coating

N. V. Larin

Tula State University, Tula, 300012, Russia

Abstract: An analytical solution of the problem of the diffraction of a plane monochromatic sound wave on a sphere with a coating of several spherical layers is obtained using the equations of a linear coupled dynamic problem of the thermoelasticity of a homogeneous isotropic body. The results of calculations of the frequency and angular characteristics of the amplitude of a scattered acoustic field for a sphere with a multilayer coated and a coating with heterogeneity continuous across the thickness are given. It is shown that a continuously inhomogeneous thermoelastic coating can be modeled by a system of homogeneous thermoelastic layers. The effect of the thermoelasticity of the sphere materials and its discrete inhomogeneous coating on the scattering of sound was investigated.

Keywords: diffraction of sound, thermoelastic sphere, inhomogeneous thermoelastic layer.

UDC: 539.3:534.26

Received: 06.12.2017
Revised: 20.02.2018

DOI: 10.15372/PMTF20180607

 English version: Journal of Applied Mechanics and Technical Physics, 2018, 59:6, 1015–1023

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