| 二维蜂窝晶格钢/水声子晶体能带结构 |
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| 引用本文： | 何存富,赵寰宇,魏瑞菊,吴斌,宋国荣.二维蜂窝晶格钢/水声子晶体能带结构[J].北京工业大学学报,2012,38(1):28-32. |
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| 作者姓名： | 何存富 赵寰宇 魏瑞菊 吴斌 宋国荣 |
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| 作者单位： | 北京工业大学机械工程与应用电子技术学院,北京,100124 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 利用平面波展开法研究了钢柱按蜂窝晶格周期排列水中构成二维钢/水声子晶体的能带结构,并详细推导了蜂窝晶格的2种结构因子.基于超声浸水透射技术,沿着第一简约布里渊区2个高对称方向测试声子晶体的带隙.实验结果表明,第一完全带隙频率范围与理论计算结果相吻合.
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| 关 键 词： | 声子晶体 带隙 平面波展开法 结构因子 |
Band Structure of Two-dimensional Steel-water Phononic Crystal With Honeycomb Lattice |
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| HE Cun-fu,ZHAO Huan-yu,WEI Rui-ju,WU Bin,SONG Guo-rong.Band Structure of Two-dimensional Steel-water Phononic Crystal With Honeycomb Lattice[J].Journal of Beijing Polytechnic University,2012,38(1):28-32. |
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| Authors: | HE Cun-fu ZHAO Huan-yu WEI Rui-ju WU Bin SONG Guo-rong |
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| Affiliation: | (College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology, Beijing 100124,China) |
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| Abstract: | The band structure of two-dimensional(2D) phononic crystal that consists of a honeycomb array of steel cylinders in water is calculated by the plane wave expansion(PWE) method and structure factors of the phononic crystal are deduced in detail.Based on the ultrasonic immersion transmission technique,the directed band gaps are experimentally measured along the two high-symmetry directions of the first irreducible Brillouin zone.Experimental result of frequency extending of the first complete band gap agrees well with the theoretical calculation. |
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| Keywords: | phononic crystal band gaps plane wave expansion structure factors |
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