| 多孔弹性介质三层夹心板的隔声性能研究 |
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| 引用本文： | 陈卫松,邱小军.多孔弹性介质三层夹心板的隔声性能研究[J].应用声学,2008,27(2):118-124. |
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| 作者姓名： | 陈卫松 邱小军 |
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| 作者单位： | 1. 近代声学教育部重点实验室,南京大学声学研究所,南京,210093;安徽师范大学,芜湖,241000
2. 近代声学教育部重点实验室,南京大学声学研究所,南京,210093 |
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| 基金项目： | 国家自然科学基金
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教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 应用Biot关于流体饱和多孔弹性介质的声传播理论,采用传递矩阵的分析方法,就复合多孔弹性材料夹心三层板在不同结构情况下的隔声性能进行了理论研究和实验分析,并与同等条件下双层夹心板的隔声性能进行了比较。数值计算和实验结果均表明,与双层夹心板相比,三层夹心板在中高频段隔声性能有明显优势,但低频段隔声性能有一定程度上的下降。研究还表明不同结构的复合三层夹心板在隔声效果上也各有特色。
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| 关 键 词： | 多孔弹性介质 隔声 传递损失 |
| 收稿时间： | 2006-09-06 |
| 修稿时间： | 2007-01-09 |
Sound insulation character of three-layer panels one with elastic porous material |
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| CHEN Wei-Song and QIU Xiao-Jun.Sound insulation character of three-layer panels one with elastic porous material[J].Applied Acoustics,2008,27(2):118-124. |
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| Authors: | CHEN Wei-Song and QIU Xiao-Jun |
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| Institution: | 1 (1 Key Lab of Modern Acoustics,Ministry of Education,Institute of Acoustics Nanjing University,Nanjing 210093) (2 Anhui Normal University,Wuhu 241000) |
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| Abstract: | The Biot theory of sound propagation in elastic porous medium and the method of transfer matrix are used to analyze the transmission loss of three layer panels with elastic porous material. Comparison of sound insulation character between double panels and three layer panels is also given. Both numerical simulation and experiment results show that the three layer panels compared with double panels have advantage in sound insulation in mid to high frequency range, but have disadvantage in low frequency range. The study also shows that different structures of three layer panels have different characters in sound insulation. |
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| Keywords: | Elastic porous medium Sound insulation Transmission loss |
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