改进型金字塔状夹芯板耦合MAM结构的降噪设计与研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (20) : 289-297.

论文

改进型金字塔状夹芯板耦合MAM结构的降噪设计与研究

杨文超1，杨廷方1，苏盛1，谢泽龙1，何斌1，易维2

作者信息 +

Noise reduction design and research of an improved pyramidal sandwich plate coupled membrane-type acoustic metamaterial structure

YANG Wenchao1, YANG Tingfang1, SU Sheng1, XIE Zelong1, HE Bin1, YI Wei2

Author information +

文章历史 +

摘要

为解决薄膜型声学超材料(Membrane-type acoustic metamaterial, MAM)低频区间隔声频段较窄、耐久性差以及抗风险能力弱的问题，探讨MAM在变压器降噪领域的应用，现设计出一种金字塔状夹芯板和MAM耦合的降噪结构。采用有限元法研究耦合结构的隔声性能和声振特性，建立结构的声固耦合模型，分析结构的声传递损失和振动模态，并探究影响结构降噪的因素。研究表明，耦合结构有着优秀的中低频宽带隔声特性，且可以通过调整薄膜和薄板的参数改变结构的隔声特性。优化后的结构在110kV变压器主噪声频点上的隔声量均能超过110dB。

Abstract

In order to solve the problems of narrow sound insulation band in low frequency range, poor durability and weak risk resistance of membrane-type acoustic metamaterial (MAM), and to explore the application of MAM in the transformer noise reduction field, a noise reduction structure coupled with pyramid sandwich panel and MAM is designed. By the finite element method, the sound insulation performance of the coupled structure and its acoustic and vibration characteristics are studied, the sound solid coupling model of the structure is established, the sound transmission loss and vibration mode of the structure are analyzed, and the factors affecting the noise reduction of the structure are explored. The results show that the coupling structure has excellent broadband sound insulation characteristics in low and medium frequency, and the sound insulation characteristics of the structure can be changed by adjusting the parameters of the membrane and the plate. The sound insulation of the optimized structure at the main noise frequency of the 110kV transformer can exceed that of 110dB.

导出引用

杨文超1, 杨廷方1, 苏盛1, 谢泽龙1, 何斌1, 易维2. 改进型金字塔状夹芯板耦合MAM结构的降噪设计与研究[J]. 振动与冲击, 2024, 43(20): 289-297

YANG Wenchao1, YANG Tingfang1, SU Sheng1, XIE Zelong1, HE Bin1, YI Wei2 . Noise reduction design and research of an improved pyramidal sandwich plate coupled membrane-type acoustic metamaterial structure[J]. Journal of Vibration and Shock, 2024, 43(20): 289-297

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