Acoustic transmission enhancement through a stiff plate drilled with subwavelength side openings
Acoustic transmission enhancement through a stiff plate drilled with subwavelength side openings
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通过钻有亚波长侧孔的刚性板增强声学传输
DOI:
10.1209/0295-5075/93/34004
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发表时间:
2011-02
期刊:
影响因子:
1.8
通讯作者:
Liu, Zhengyou
中科院分区:
文献类型:
--
作者:
Peng, Pai;Qiu, Chunyin;Hao, Rui;Lu, Jiuyang;Liu, Zhengyou
We study the acoustic transmission through a water-immersed brass plate drilled with a one-dimensional periodical array of rectangular side openings. This new geometry can reveal well the unique properties in acoustic systems, which are rooted in the complex coupling between the longitudinal and transverse waves. Besides the transmission peaks related with regular cavity modes, we observe two additional types of subwavelength peaks. One stems from the resonant excitation of the coupled nonleaky Lamb modes, and the other corresponds to the excitation of the standing plate modes. In particular, the latter is robust in the subwavelength region and has attracted no attention previously.
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