| Sound Absorption of Locally Resonant Sonic Materials |
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| 作者姓名： | 赵宏刚 刘耀宗 温激鸿 郁殿龙 王刚 温熙森 |
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| 作者单位： | Institute of Mechatronical Engineering and the PBG Research Center, National University of Defense Technology Changsha 410073 |
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| 基金项目： | Supported by the State Key Basic Research and Development Programme of China under Grant No 51307. |
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| 摘 要： |
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| 关 键 词： | 声音吸收 多重散射 局部共振音材料 声学性 |
| 收稿时间： | 2006-04-24 |
| 修稿时间： | 2006-04-24 |
Sound Absorption of Locally Resonant Sonic Materials |
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| ZHAO Hong-Gang,LIU Yao-Zong,WEN Ji-Hong,YU Dian-Long,WANG Gang,WEN Xi-Sen.Sound Absorption of Locally Resonant Sonic Materials[J].Chinese Physics Letters,2006,23(8):2132-2134. |
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| Authors: | ZHAO Hong-Gang LIU Yao-Zong WEN Ji-Hong YU Dian-Long WANG Gang WEN Xi-Sen |
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| Affiliation: | Institute of Mechatronical Engineering and the PBG Research Center, National University of Defense Technology Changsha 410073 |
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| Abstract: | The acoustic properties of locally resonant sonic materials with viscosity are theoretically investigated by using the multiple-scattering approach. We find that the absorption of a two-layer slab dominates the wave attenuation in the resonant frequency region under the condition of moderate or high viscous level. The fundamental mechanism operating in local resonance for absorption is investigated for the viability by the mode translation in the scattering process of a single scatterer. Finally the absorption performance in a multi-layer system is discussed. |
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| Keywords: | 43 20 +g 43 30 +m 62 30 +d |
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