Acoustic scattering from a cylindrical shell with an internal rigid plate: Analysis and experiment.
Acoustic scattering from a cylindrical shell with an internal rigid plate: Analysis and experiment.
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DOI：
10.1121/1.5040469
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发表时间：
2018-06
期刊：
影响因子：
--
通讯作者：
Yunzhe Tong;Jun Fan;Bin Wang-
中科院分区：
文献类型：
--
作者：
Yunzhe Tong;Jun Fan;Bin Wang-
本文从理论和实验两个方面研究了垂直入射下加肋圆柱壳的声散射问题。圆柱壳由沿轴向沿着在壳体上的内部纵向刚性板加强。通过频率-角度谱分析了后向散射声。通过研究波的产生、传播和辐射，作者发现频率-角度谱中的主要特征可以用壳体的共振以及散射波和辐射波之间的相互作用来解释。内板的最显著的影响是由内板的附件引起的亚音速a0波的辐射。此外，给出了简单的公式来预测由于镜面反射和壳结构响应的散射之间的干涉而在频率-角度谱中产生的干涉条纹。
The sound scattering from a fluid-loaded stiffened cylindrical shell at normal incidence is studied by theoretical and experimental approaches. The cylindrical shell is reinforced by an internal longitudinal rigid plate attached to the shell along the axial direction. The backscattered sound is analyzed via the frequency-angle spectra. By studying the generation, propagation, and radiation of the waves, the authors found that the dominant features in the frequency-angle spectra can be explained by the resonance of the shell and the interaction between the scattered and radiation waves. The most significant effect of the internal plate is the radiation of the subsonic a0 waves caused by the attachments of the internal plate. Furthermore, simple formulas are given to predict the interference fringes in the frequency-angle spectra due to the interference between the specular reflection and the scattering from the shell structure response.