| 葛丽丽,彭子龙,柴鹏程,程一鹏,黄唯纯.经典局域共振型水声超材料的吸隔声性能研究*[J].,2022,41(6):1004-1009 |
| 经典局域共振型水声超材料的吸隔声性能研究* |
| Sound absorption and insulation properties of underwater acoustic metamaterials based on classical local resonance |
| 投稿时间：2021-10-06 修订日期：2022-10-11 |
| 中文摘要: |
| 基于水声超材料吸声机理和多层平行介质平面波理论,建立局域共振型水声超材料结构,通过COMSOL进行建模计算,研究该结构的吸声性能机理,此外为了验证钢背衬的隔声性能,在该水声超材料结构基础上添加一层0.005m厚的钢背衬进行仿真对比。研究结果表明,在频段为200Hz-4000Hz时,水声超材料声学性能较好,吸声性能整体较优,且添加钢背衬的水声超材料隔声性能较优,甚至在某频率点达到15dB的隔声差值；此外通过位移场图进一步揭示水声超材料的吸声机理,发现水声超材料结构的位移场和钢背衬都对吸声性能会产生影响,钢背衬通过影响共振吸收来影响吸声性能,而位移场则通过位移幅度大小影响吸声性能。 |
| 英文摘要: |
| Based on the sound absorption mechanism of underwater acoustic metamaterials and the plane wave theory of multi-layer parallel media, a local resonance underwater acoustic metamaterial structure is established. The sound absorption mechanism of the structure is studied by modeling and calculation through COMSOL. In addition, in order to verify the sound insulation performance of steel backing, a layer of 0.005M thick steel backing is added to the underwater acoustic metamaterial structure for simulation and comparison. The results show that when the frequency band is 200hz-4000hz, the acoustic performance of underwater acoustic metamaterials is better, the sound absorption performance is better as a whole, and the sound insulation performance of underwater acoustic metamaterials with steel backing is better, even reaching a sound insulation difference of 15dB at a certain frequency point; In addition, the sound absorption mechanism of underwater acoustic metamaterials is further revealed through the displacement field diagram. It is found that the displacement field of underwater acoustic metamaterials and steel backing will affect the sound |
| DOI：10.11684/j.issn.1000-310X.2022.06.019 |
| 中文关键词: 水声超材料 吸隔声性能 局域共振 |
| 英文关键词: underwater acoustic metamaterials sound absorption and insulation performance locally resonance |
| 基金项目:江苏省自然科学青年基金(BK20200995)；国防科技基础加强计划技术领域基金(2020-JCJQ-JJ-228) |
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