Sound scattering from a thin rod in a viscous medium
Sound scattering from a thin rod in a viscous medium
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DOI：
10.1121/1.393230
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发表时间：
1986-06
影响因子：
2.4
通讯作者：
Wen H. Lin;A. C. Raptis
中科院分区：
文献类型：
--
作者：
Wen H. Lin;A. C. Raptis
声波入射到半径小于入射声波长的弹性细杆上时，杆内会产生弯曲和均匀的压缩振动。这些弹性振荡反过来将声波辐射到流体介质中，并影响散射波。本文对粘性流体中弹性无约束细杆的声散射和声弹性振动进行了解析研究。在求解有关杆的声散射和弹性响应的边值问题时，考虑了流体的剪切粘性。结果表明，散射纵波由刚性杆对纵波的散射、杆的均匀脉动引起的单极波和杆的弯曲振动引起的偶极波组成。散射粘性波由刚性杆对粘性波的散射和杆的弯曲振动引起的偶极波组成。当有效惯性力...
Sound waves incident on a thin elastic rod whose radius is smaller than the wavelength of the incident sound induce flexural and uniform compressional oscillations in the rod. These elastic oscillations, in turn, radiate sound waves into the fluid medium and affect the scattered waves. This paper deals with an analytic study on sound scattering by, and acoustoelastic vibrations of, a thin elastic unbound rod in a viscous fluid. The shear viscosity of the fluid is considered in the solutions to boundary value problems concerning the sound scattering and the elastic response of the rod. Results show that the scattered compressional waves consist of the rigid‐rod scattering of compressional waves, monopolar waves due to the uniform pulsating of the rod, and dipolar waves due to the flexural vibration of the rod. The scattered viscous waves consist of the rigid‐rod scattering of viscous waves and dipolar waves due to the flexural vibration of the rod. Acoustic resonances occur when the effective inertia force...