| 声波在球状准周期多层介质中的传播 |
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| 引用本文： | 方云团,王永顺,姜光. 声波在球状准周期多层介质中的传播[J]. 应用声学, 2004, 23(1): 23-28,47 |
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| 作者姓名： | 方云团 王永顺 姜光 |
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| 作者单位： | 中国人民解放军镇江船艇学院物理系,镇江,212003 |
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| 摘 要： | 运用转移矩阵方法研究了声波在准周期球形多层介质中的传播，与周期性结构比较它具有不同结构的通带和禁带，且随介质层数的增加声波衰减速度变慢。声波透射系数还随介质厚度的改变发生周期性的变化。
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| 关 键 词： | 声波 球状准周期多层介质 转移矩阵法 透射系数 声学器件 |
Acoustic wave propagation in quasiperiodic layered spherical structure |
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| FANG Yun-Tuan,WANG Yong-Shun and JIANG Guang. Acoustic wave propagation in quasiperiodic layered spherical structure[J]. Applied Acoustics(China), 2004, 23(1): 23-28,47 |
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| Authors: | FANG Yun-Tuan WANG Yong-Shun JIANG Guang |
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| Affiliation: | Department of Physics, Zhenjiang Watercraft College, Zhenjiang 212003;Department of Physics, Zhenjiang Watercraft College, Zhenjiang 212003;Department of Physics, Zhenjiang Watercraft College, Zhenjiang 212003 |
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| Abstract: | Radiation from acoustic source located inside quasiperiodic layered structures is studied using the transfer matrix method. In contrast to the periodically layered cases the propagation in the quasiperiodic systems has different band structures and decreases slower than in the periodic systems with the number of layers. In addition the transmission coefficients periodically change with the variation of media thickness. |
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| Keywords: | Quasiperiodic structure Acoustic wave propagation Transfer matrix |
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