Transferable Analytical Model of Phononic Bandgap in Cross-Hole Phononic Crystals
Transferable Analytical Model of Phononic Bandgap in Cross-Hole Phononic Crystals
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跨孔声子晶体中声子带隙的可传递分析模型
DOI：
10.1109/ultsym.2018.8579923
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Atsushi Ishikawa
中科院分区：
文献类型：
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作者：
Takahiro Nishino;Kenji Tsuruta;Atsushi Ishikawa
本文从理论和数值上研究了平板材料中含有交叉孔的声子晶体。我们发现，声子带隙可以通过改变结构参数精确调谐的PnC，和振动模式的带隙频率的上下边缘可以很好地再现由三种类型的分析模型：一个有效的弹簧质量模型，弯曲波模式的薄板，和伯努利-欧拉理论的振动梁。设计的带隙的宽度和位置的确认与PnC结构的薄板的透射光谱的实验测量。
We numerically and theoretically investigate Phononic Crystals (PnC) with cross holes in a plate material. We show that phononic bandgap can be tuned precisely by changing structural parameters in the PnC, and the vibrational modes at lower and upper edges of the bandgap frequency can be well reproduced by three types of analytical model; an effective spring-mass model, flexural wave mode of thin plate, and the Bernoulli-Euler theory for vibrating beam. The width and position of the designed bandgap are confirmed by an experimental measurement of transmission spectra for a thin plate with the PnC structure.