| 类正方阿基米德格子声子晶体的声学能带结构特性 |
| |
| 引用本文： | 赵寰宇,骆岩红,陈阿丽.类正方阿基米德格子声子晶体的声学能带结构特性[J].人工晶体学报,2012,41(1):243-247,252. |
| |
| 作者姓名： | 赵寰宇 骆岩红 陈阿丽 |
| |
| 作者单位： | 1. 北京交通大学工程力学研究所,北京,100044
2. 西北民族大学电气工程学院,兰州,730030 |
| |
| 摘 要： | 利用平面波展开法计算了类正方阿基米德格子水/水银声子晶体能带结构。结果表明:与正方晶格水/水银声子晶体对比,单胞含有4个"原子"类正方阿基米德格子声子晶体存在各向同性带隙和高频带隙;在低频范围内,讨论归一化半径对类正方阿基米德格子和正方晶格水/水银声子晶体带隙相对宽度的影响,并比较它们带隙相对宽度,选择合适归一化半径值,这些类型声子晶体能够得到最宽的带隙。
|
| 关 键 词： | 类正方阿基米德格子 各向同性带隙 归一化半径 声子晶体 平面波展开法 |
Properties of Acoustic Band Structure of Phononic Crystal with Square-like Archimedean Lattices |
| |
| ZHAO Huan-yu
,
LUO Yan-hong
,
CHEN A-li.Properties of Acoustic Band Structure of Phononic Crystal with Square-like Archimedean Lattices[J].Journal of Synthetic Crystals,2012,41(1):243-247,252. |
| |
| Authors: | ZHAO Huan-yu LUO Yan-hong CHEN A-li |
| |
| Institution: | 1(1.Institute of Engineering Mechanics,Beijing Jiaotong University,Beijing 100044,China; 2.College of Electrical Engineering,Northwest University for Nationalities,Lanzhou 730030,China)(Received 26 September 2011,accepted 8 December 2011) |
| |
| Abstract: | The acoustic band structures of phononic crystals(PCs) consisting of square-like Archimedean lattices arrays of circular water cylinders in mercury are investigated by the plane wave expansion method.Compared the square PC,it is observed that the PCs with square-like Archimedean lattices have some isotropic band gaps and high frequency band gaps.In the ranges of lower frequency,the relations of normalized radius and normalized gap width for PCs with square-like Archimedean and square lattices are discussed in detail.Moreover,compared with the normalized gap widths of those PCs,their maximum values are obtained at suitable normalized radius. |
| |
| Keywords: | square-like Archimedean lattices band gaps of isotropy normalized radius phononic crystal plane wave expansion method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
