Acoustic directional radiation operating at the pass band frequency in two-dimensional phononic crystals
Acoustic directional radiation operating at the pass band frequency in two-dimensional phononic crystals
复制标题
二维声子晶体中通带频率下的声定向辐射
DOI:
10.1088/0022-3727/42/11/115417
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发表时间:
2009-06
期刊:
影响因子:
--
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中科院分区:
文献类型:
--
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The phase constant surfaces of two-dimensional phononic crystals consisting of steel cylinders in water are calculated to predict the directivity of acoustic wave propagation. A highly directional acoustic source can be obtained at a pass band frequency far away from the band edge states. This observation is quite different from those in the two former approaches, where one is due to the high density of band-edge states and the other is due to the resonant cavity state in two-dimensional phononic crystals. The prediction is validated by the acoustic field distributions of a finite structure with 24 × 24 unit cells.
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通讯作者:
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影响因子:
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KUSHWAHA, MS;HALEVI, P;DJAFARIROUHANI, B
通讯作者:
DJAFARIROUHANI, B
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作者:
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通讯作者:
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