Sound Absorption of Locally Resonant Sonic Materials
ZHAO Hong-Gang, LIU Yao-Zong, WEN Ji-Hong, YU Dian-Long, WANG Gang, WEN Xi-Sen
Institute of Mechatronical Engineering and the PBG Research Center, National University of Defense Technology, Changsha 410073
Sound Absorption of Locally Resonant Sonic Materials
ZHAO Hong-Gang;LIU Yao-Zong;WEN Ji-Hong;YU Dian-Long;WANG Gang;WEN Xi-Sen
Institute of Mechatronical Engineering and the PBG Research Center, National University of Defense Technology, Changsha 410073
关键词 ：
43.20.+g ,
43.30.+m ,
62.30.+d
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.
Key words ：
43.20.+g
43.30.+m
62.30.+d
出版日期: 2006-08-01
引用本文:
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]. 中国物理快报, 2006, 23(8): 2132-2134.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I8/2132
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2006, Vol. 23 
