| 一维准周期声子晶体中平面波的传播和局部化 |
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| 引用本文： | 陈阿丽,汪越胜. 一维准周期声子晶体中平面波的传播和局部化[J]. 应用声学, 2008, 27(1): 69-73 |
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| 作者姓名： | 陈阿丽 汪越胜 |
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| 作者单位： | 北京交通大学工程力学所,北京,100044 |
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| 基金项目： | 国家自然科学基金资助（10632020） |
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| 摘 要： | 本文研究了平面波在一维准周期声子晶体中的传播,引进局部化因子的概念研究了结构的带隙特性和局部化特征,利用Wolf方法给出了局部化因子的表达式并用传递矩阵法计算了局部化因子,考查了平面波垂直入射和斜入射的情形,并与相应的周期结构及随机失谐结构进行了比较。
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| 关 键 词： | 准周期 Fibonacci序列 局部化因子 带隙 声子晶体 |
| 收稿时间： | 2006-06-06 |
| 修稿时间： | 2007-10-28 |
Plane Wave Propagation in One-Dimensional Quasi-periodic phononic Crystals |
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| CHEN A-Li and WANG Yue-Sheng. Plane Wave Propagation in One-Dimensional Quasi-periodic phononic Crystals[J]. Applied Acoustics(China), 2008, 27(1): 69-73 |
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| Authors: | CHEN A-Li and WANG Yue-Sheng |
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| Affiliation: | CHEN A-Li WANG Yue-Sheng (Institute of Engineering Mechanics,Beijing Jiaotong University,Beijing 100044) |
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| Abstract: | The propagation of plane wave in one dimensional quasi-periodic structure is studied by employing the conception of the localization factor.The properties of band gaps and the localization phenomenon are studied.The localization factor is expressed by Wolf’s algorithm and calculated by the transfer matrix method.Normal and oblique incidence are addressed and compared to the corresponding perfect phononic crystal and randomly disordered one. |
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| Keywords: | Quasi-periodic Fibonacci sequence Localization factor Band gap Phononic crystal |
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