| 一维固-液型随机失谐声子晶体中波的传播 |
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| 引用本文： | 陈阿丽,汪越胜. 一维固-液型随机失谐声子晶体中波的传播[J]. 人工晶体学报, 2011, 40(3): 624-629 |
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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系,北京,100044 |
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| 基金项目： | 国家自然科学基金(10902012,10632020)资助项目 |
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| 摘 要： | 本文研究了声波在一维固-液型随机失谐声子晶体中的传播,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.给出了局部化因子的计算表达式并用传递矩阵法进行了计算,考查了平面波以任意角度入射的情形.结果表明:失谐度对高频区的频带结构有较大的影响,固-液型声子晶体与固-固型声子晶体的频带结构有很大差别.
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| 关 键 词： | 声波 随机失谐 固液耦合 声子晶体 带隙 局部化因子, |
Wave Propagation in One-dimensional Randomly Disordered Solid-liquid Phononic Crystals |
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| CHEN A-li,WANG Yue-sheng. Wave Propagation in One-dimensional Randomly Disordered Solid-liquid Phononic Crystals[J]. Journal of Synthetic Crystals, 2011, 40(3): 624-629 |
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| Authors: | CHEN A-li WANG Yue-sheng |
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| Affiliation: | CHEN A-li,WANG Yue-sheng(Institute of Engineering Mechanics,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | The propagation of the acoustic wave in one dimensional ordered and randomly disordered solid-liquid phononic crystal was studied by employing the conception of the localization factor.The properties of band gaps and the localization phenomenon were studied.The localization factor was expressed by Wolf's algorithm and calculated by the transfer matrix method.Normal and oblique incidence were addressed.The results show that the disordered degree has more influences on the band structures in the high frequenc... |
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| Keywords: | acoustic wave random disorder fluid-structure interaction phononic crystal band gap localization factor |
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