空间卷曲超表面圆柱壳声波调控及实验研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (19) : 37-42.

论文

空间卷曲超表面圆柱壳声波调控及实验研究

刘欢1，张晨曦2，杨子悦1，张红艳1

作者信息 +

Acoustic wave control and experimental study on space curled meta-surface cylindrical shell

LIU Huan1, ZHANG Chenxi2, YANG Ziyue1, ZHANG Hongyan1

Author information +

文章历史 +

摘要

基于广义斯涅尔定律，设计了两种由空间卷曲单元构成的空间卷曲超表面圆柱壳，通过改变单元内部齿条长度、宽度以及数量改变声波传播路径的长度和透射声波相位，实现对点声源声波的单向调控和双向调控，在目标范围内产生低噪声区域。推导了适用于超表面圆柱壳的极坐标广义斯涅尔定律表达式，应用有限元方法分析了空间卷曲超表面圆柱壳在点声源作用下的声压场分布和波的调控特性。搭建了声压测试实验平台，测得结构的透射声场声压值，将测量值与数值结果对比验证，两者具有较好的一致性。结果表明所设计的超表面圆柱壳可实现对柱面波的有效调控，为管道、压力容器等工程结构产生的柱面波噪声控制提供有益参考。

Abstract

Based on the generalized Snell’s law, two kinds of space-coiling metasurface cylindrical shell composed of space-coiling structure units were designed. Changing the length, width and number of racks inside the unit, the path length and phase of the acoustic wave propagation of the transmitted acoustic wave are changed to realize the regulations of the acoustic wave of the point sound source. The low noise region was realized within the target range. The expression of polar generalized Snell’s law for metasurface cylindrical shells was derived. The finite element method was used to analyze the sound pressure distribution and wave control characteristics of the space-coiling metasurface cylindrical shells under the point sound source. Furthermore, the sound pressure test experiment platform was built, and the sound pressure distribution at different positions of the transmission sound field of the structure was measured. The results were compared with the numerical analysis results, and they have a good agreement. The results show that the designed metasurface cylindrical shells can effectively control the cylindrical wave, which provides a useful reference for the control of cylindrical wave noise generated by engineering structures such as pipelines and pressure vessels.

导出引用

刘欢1, 张晨曦2, 杨子悦1, 张红艳1. 空间卷曲超表面圆柱壳声波调控及实验研究[J]. 振动与冲击, 2024, 43(19): 37-42

LIU Huan1, ZHANG Chenxi2, YANG Ziyue1, ZHANG Hongyan1. Acoustic wave control and experimental study on space curled meta-surface cylindrical shell[J]. Journal of Vibration and Shock, 2024, 43(19): 37-42

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