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Due to the difficulty of attenuation of middle and low frequency band sound waves in the process of propagation, the control of middle and low frequency broadband sound waves has become a challenging topic, so it is necessary to develop new materials and structures with low frequency sound absorption and noise reduction functions. The special properties of acoustic metamaterials provide new ideas for the development of sound absorption and insulation. In order to effectively control the noise in the middle and low frequency bands, a new spatial spiral acoustic metamaterial was designed and optimized by using the finite element software COMSOL Multiphysics, and the sound absorption and sound insulation performance in the 100~2500 Hz frequency band were calculated and analyzed. With the help of 3D printing for completing the preparation of metamaterial, the sound absorption and insulation performance of spiral acoustic metamaterial were compared in an experimental study to verify the accuracy of the calculation method.
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由于中、低频段声波在传播过程中难以衰减,控制中、低频宽带声波已成为一个具有挑战性的课题,因此,开发具有低频吸隔声降噪功能的新型材料或结构是很有必要的。声学超材料的特殊属性为吸隔声领域的发展提供了新的思路。为有效控制中、低频段噪声,本文通过有限元软件COMSOL Multiphysics优化设计了一种新型的空间螺旋式声学超材料,并完成100~2500 Hz频段范围吸声和隔声性能的计算分析,借助3D打印完成超材料制备,进行螺旋式声学超材料的吸隔声性能对比实验研究,验证计算方法的准确性。
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马骏(1963-),男,副教授。
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Curves of sound absorption coefficients of metamaterial with 1-3 cells, figureFileSmall=w6mbdFRG49yYZcbZUyeGSw==, figureFileBig=W7L6U0AQ95kxCgIPlk/gkg==, tableContent=null), ArticleFig(id=1241766152637059306, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=图4, caption=
1~3个单元的吸声系数曲线图, figureFileSmall=w6mbdFRG49yYZcbZUyeGSw==, figureFileBig=W7L6U0AQ95kxCgIPlk/gkg==, tableContent=null), ArticleFig(id=1241766152783859951, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Fig.5, caption=
STL curves of 1-3 cells(standard), figureFileSmall=Ww841BLdU9aPhMC/FCuSjA==, figureFileBig=Fx34gDK24UXL6M9sKCcDOg==, tableContent=null), ArticleFig(id=1241766152863551732, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=图5, caption=
1~3个单元的隔声量曲线图(标准), figureFileSmall=Ww841BLdU9aPhMC/FCuSjA==, figureFileBig=Fx34gDK24UXL6M9sKCcDOg==, tableContent=null), ArticleFig(id=1241766152968409338, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Fig.6, caption=
STL curves of 1-3 cells(considering thermal viscosity loss), figureFileSmall=i9Gk32MEuthnQqP2gyzTqg==, figureFileBig=iLrHf/Wpb4Jp0ZKzONorFA==, tableContent=null), ArticleFig(id=1241766153069072638, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=图6, caption=
1~3个单元的隔声量曲线图(考虑热粘度损失), figureFileSmall=i9Gk32MEuthnQqP2gyzTqg==, figureFileBig=iLrHf/Wpb4Jp0ZKzONorFA==, tableContent=null), ArticleFig(id=1241766153144570115, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Fig.7, caption=
Schematic diagram of spiral acoustic metamaterial sample prepared by 3D printing, figureFileSmall=sW4sGJNaXw2fA8W30kaKhw==, figureFileBig=rWs08YCFx3bTR5zjUPhvTg==, tableContent=null), ArticleFig(id=1241766154625159432, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=图7, caption=
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吸声实验装置图, figureFileSmall=Rv/fmpcCN1gxHrNWuFN8Sw==, figureFileBig=yn9dXafb607ySvX85Vnvow==, tableContent=null), ArticleFig(id=1241766155040395546, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Fig.9, caption=
Comparison of sound absorption coefficients between simulation and experimental results, figureFileSmall=Ufd7/3sZuKSoVTVxeERuxg==, figureFileBig=OXOCdGfhplDmthlnUMbKCw==, tableContent=null), ArticleFig(id=1241766155220750629, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=图9, caption=
仿真模拟和实验结果的吸声系数对比, figureFileSmall=Ufd7/3sZuKSoVTVxeERuxg==, figureFileBig=OXOCdGfhplDmthlnUMbKCw==, tableContent=null), ArticleFig(id=1241766155363356969, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Fig.10, caption=
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仿真和实验结果的STL对比(标准), figureFileSmall=p+eXafbs7ttJUt/uBw2lGA==, figureFileBig=zGp0ApBDv1g1HavVV86JWw==, tableContent=null), ArticleFig(id=1241766155602432308, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Fig.11, caption=
STL comparison between simulation and experimental results(Naked condition), figureFileSmall=I+vI9Flat3wbCrbH0DGy+A==, figureFileBig=ErPBhRGgZHJRt4WS4Hfqlg==, tableContent=null), ArticleFig(id=1241766155711484217, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=图11, caption=
仿真和实验结果的STL对比(裸露), figureFileSmall=I+vI9Flat3wbCrbH0DGy+A==, figureFileBig=ErPBhRGgZHJRt4WS4Hfqlg==, tableContent=null), ArticleFig(id=1241766155807953212, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=EN, label=Tab.1, caption=
Band gap frequencies and band gaps for different spiral inner diameters
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| 内径r /mm | 所需带隙频率/Hz | 带宽/Hz |
|---|
| 0.07 | 1824~2440 | 616 |
| 0.09 | 1816~2433 | 617 |
| 0.1 | 1812~2429 | 617 |
| 0.15 | 1812~2409 | 597 |
), ArticleFig(id=1241766155896033599, tenantId=1146029695717560320, journalId=1240685776644648972, articleId=1241023038213386352, language=CN, label=表1, caption=
不同螺旋线内径下的带隙频率和带宽
, figureFileSmall=null, figureFileBig=null, tableContent=
| 内径r /mm | 所需带隙频率/Hz | 带宽/Hz |
|---|
| 0.07 | 1824~2440 | 616 |
| 0.09 | 1816~2433 | 617 |
| 0.1 | 1812~2429 | 617 |
| 0.15 | 1812~2409 | 597 |
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