用于协同隔声与吸声的膜型声学超材料–亥姆霍兹谐振器复合结构
A Membrane-Type Acoustic Metamaterial Combined with a Helmholtz Resonator for Synergistic Sound Insulation and Absorption
摘要: 本文提出了一种新型膜型声学超材料框架结构，该结构结合环形质量块与亥姆霍兹谐振腔设计，并在谐振腔底部引入薄膜，从而在实现优异降噪性能的同时有效减轻整体重量。基于集总质量法推导并计算了膜型声学超材料的共振频率，并通过数值模拟系统分析了该结构的声传输损失(STL)、吸声系数(SAC)、动态响应及振动模态。结果表明，在30~1200 Hz范围内的平均STL可以达到69 dB，在700~1060 Hz范围内出现连续的吸声峰，其平均SAC可以达到0.784。该研究为实现声学超材料的轻量化与多功能集成提供了新思路，为实际工程中的宽频降噪应用提供了参考。
Abstract: This paper proposes a novel membrane-type acoustic metamaterial framework structure, which integrates an annular mass block with a Helmholtz resonator design and introduces a thin film at the bottom of the resonator cavity, thereby achieving excellent noise reduction performance while effectively reducing overall weight. The resonant frequency of the membrane-type acoustic metamaterial is derived and calculated using the lumped mass method. Through numerical simulations, the sound transmission loss (STL), sound absorption coefficient (SAC), dynamic response, and vibration modes of the structure are systematically analyzed. The results show that the average STL can reach 69 dB in the frequency range of 30~1200 Hz, and continuous sound absorption peaks appear in the range of 700~1060 Hz, with an average SAC of 0.784. This study provides new insights into achieving lightweight and multifunctional integration of acoustic metamaterials, and offers a reference for broadband noise reduction applications in practical engineering.
文章引用：李佳宁. 用于协同隔声与吸声的膜型声学超材料–亥姆霍兹谐振器复合结构[J]. 仪器与设备, 2026, 14(3): 359-371. https://doi.org/10.12677/iae.2026.143041

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