内置穿孔隔板的微穿孔结构吸声性能研究
Study on Sound Absorption Performance of Micro-Perforated Structure with Built-In Perforated Baffle
DOI: 10.12677/OJAV.2022.102002, PDF,    国家自然科学基金支持
作者: 揭俊星, 兰晓乾：南昌航空大学飞行器工程学院，江西 南昌
关键词: 微穿孔板；穿孔隔板；孔径；穿孔率；板厚；Micro-Perforated Plate； Perforated Baffle； Aperture； Perforation Rate； Thickness of Plating
摘要: 微穿孔板结构因其质轻、抗氧化、易加工等优点在降噪领域被广泛应用，为了提高单层微穿孔结构的吸声效果，本文在微穿孔板结构内添加垂直上面板的穿孔隔板，利用隔板上的微孔改善结构的降噪效果。研究表明，添加适当参数的穿孔隔板之后，结构的降噪效果有所提升，随后分析了添加穿孔隔板的孔径、穿孔率以及板厚对结构吸声效果的影响，最后利用驻波管试验验证了利用穿孔隔板提高微穿孔板结构吸声性能的可行性，为提高微穿孔板结构的吸声性能提供新思路。
Abstract: Micro-perforated plate structure is widely used in the field of noise reduction because of its advantages such as light weight, oxidation resistance and easy machining. In order to improve the sound absorption performance of single-layer micro-perforated plate, a perforated baffle which is vertical to the upper panel is added into the micro-perforated plate structure, and the micro-holes in the baffle plate are used to improve the noise reduction effect of the whole structure. Studies show that, through adding proper parameters of perforated baffle, the noise reduction effect of structure is improved, then the effects of perforated baffle’s aperture, perforation rate and thickness of plating are analyzed. Finally, the feasibility of using perforated baffle to improve the sound absorption performance of the structure is verified by impedance tube experiment, these provide a new idea to improve the sound absorption performance of micro-perforation plate structure.
文章引用：揭俊星, 兰晓乾. 内置穿孔隔板的微穿孔结构吸声性能研究[J]. 声学与振动, 2022, 10(2): 9-18. https://doi.org/10.12677/OJAV.2022.102002

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