| 一维声子晶体的振动特性与实验研究 |
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| 引用本文： | 郑玲,李以农,A Baz.一维声子晶体的振动特性与实验研究[J].振动工程学报,2007,20(4):417-421. |
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| 作者姓名： | 郑玲 李以农 A Baz |
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| 作者单位： | 1. 重庆大学机械传动国家重点实验室,重庆,400044
2. Department of Mechanical Engineering,University of Maryland,College Park,MD 20742,USA |
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| 摘 要： | 研究了铝/橡胶一维声子晶体的机械滤波特性.采用有限元和传递矩阵法导出了弹性波在一维声子晶体中传播的理论模型.对声子晶体的振动传输与隔振特性进行了实验研究.研究结果表明：铝/橡胶一维声子晶体存在振动带隙,改变单元的几何尺寸和材料特性,能将带隙频率范围扩大并延伸至低频;实验验证了理论模型的预测,为铝/橡胶声子晶体在发动机隔振控制上的应用提供了依据.
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| 关 键 词： | 声子晶体 周期结构 振动 |
| 文章编号： | 1004-4523（2007）04-0417-05 |
| 修稿时间： | 2006-10-302007-04-02 |
Theoretical and experimental study on the characteristics of wave propagation for one dimensional phononic crystal |
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| ZHENG Ling,LI Yi-nong,A Baz.Theoretical and experimental study on the characteristics of wave propagation for one dimensional phononic crystal[J].Journal of Vibration Engineering,2007,20(4):417-421. |
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| Authors: | ZHENG Ling LI Yi-nong A Baz |
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| Affiliation: | 1. The State Key Lab. of Mechanical Transmission, Chongqing University, Chongqing 400044, China; 2. Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA |
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| Abstract: | The characteristics of wave propagation for one dimensional phononic crystal made of Aluminum and Rubber is studied. The theoretical model governing the operation of these phononic crystals is derived by using finite element and transfer matrix methods. Experiments are performed to verify the characteristics of vibration transfer and isolation of these phononic crystals. Theoretical results show that the stop band can be tuned by modifying material and geometric parameters in phononic crystals. Experimental results identify theoretical predictions and demonstrate the potential of these phononic crystals to stop or confine the propagation of undesirable disturbance as an engine mount. |
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| Keywords: | phononic crystal periodic structure vibration |
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