| 任 杰,李广军,李 晔,武瑞杰.局域共振型波纹层芯夹层板的隔声特性与优化设计[J].,2025,44(4):1031-1039 |
| 局域共振型波纹层芯夹层板的隔声特性与优化设计 |
| Sound insulation characteristics and optimization design of local resonance corrugated core sandwich panel |
| 投稿时间：2024-03-22 修订日期：2025-06-24 |
| 中文摘要: |
| 为实现高速列车低频噪声的控制，基于局域共振理论与波纹层芯夹层板声振耦合特性设计了一种波纹层芯夹层板声学超材料结构。首先，基于Bloch有限元方法建立了结构的仿真模型并验证其准确性，计算了该结构的传声损失。其次，分析了共振单元结构参数变化对隔声性能的影响。最后，使用遗传算法针对高速列车车厢的噪声频谱特性优化共振单元结构参数。结果表明，优化后的隔声曲线在频率为125 Hz的隔声量由23.1 dB提升至34.3 dB；结构的平均隔声量由35.1 dB提升至35.8 dB，计权隔声量为40 dB，优化后的波纹层芯夹层板声学超材料有效地提高了结构的低频隔声性能，可实现高速列车车厢内噪声的靶向控制。 |
| 英文摘要: |
| To achieve the control of low-frequency noise in high-speed trains, a corrugated core sandwich plate acoustic metamaterial structure was designed based on local resonance theory and the coupling characteristics of corrugated core sandwich plate sound and vibration. Firstly, the simulation model of the structure is established based on Bloch finite element method and its accuracy was verified. The sound transmission loss of the structure is calculated. Secondly, the impact of changes in the structural parameters of the resonant unit on the sound insulation performance was analyzed. Finally, genetic algorithm is used to optimize the structural parameters of the resonance unit for the noise spectrum characteristics of high-speed train carriages. The optimized sound insulation curve is shown to increase from 23.1 dB to 34.3 dB at a frequency of 125 Hz. The average sound insulation capacity of the structure is increased from 35.1 dB to 35.8 dB, and the weight insulation capacity is 40 dB, effectively improving the low-frequency sound insulation performance of the structure. Targeted noise control in the high-speed train carriage can be achieved by the optimized corrugated core sandwich plate acoustic metamaterial. |
| DOI：10.11684/j.issn.1000-310X.2025.04.024 |
| 中文关键词: 高速列车 声学超材料 Bloch有限元 隔声 遗传算法 |
| 英文关键词: High speed trains Acoustic metamaterials Bloch finite element Sound insulation Genetic algorithm |
| 基金项目: |
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