| 具有弱界面的柱状复合结构中轴对称声导波 |
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| 引用本文： | 杜光升,王耀俊,袁忆丰,赵庆昌.具有弱界面的柱状复合结构中轴对称声导波[J].物理学报,1998,47(1):27-34. |
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| 作者姓名： | 杜光升 王耀俊 袁忆丰 赵庆昌 |
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| 作者单位： | 南京大学声学研究所，近代声学国家重点实验室，南京 210093 |
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| 基金项目： | 国家自然科学基金和江苏省自然科学基金资助的课题- |
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| 摘 要： | 利用柱状分层结构中轴对称声导波的波动方程和界面“弹簧”模型，导出了具有弱界面的双层柱状复合结构中轴对称声导波的广义色散方程，计算了刚性联接和滑移联接界面时双层复合管(腔壁为自由界面或腔内充水)和双层复合棒中轴对称声导波的色散特性，分析了弱界面的轴向劲度系数对低阶轴对称声导波的影响-
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| 关 键 词： | 声导波 轴对称 弱界面 柱状复合结构 波动方程 |
| 收稿时间： | 5/4/1997 12:00:00 AM |
AXISYMMETRIC GUIDED WAVES IN CYLINDRICAL COMPOSITE STRUCTURES WITH WEAK INTERFACES |
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| DU GUANG-SHENG,WANG YAO-JUN,YUAN YI-FENG and ZHAO QING-CHANG.AXISYMMETRIC GUIDED WAVES IN CYLINDRICAL COMPOSITE STRUCTURES WITH WEAK INTERFACES[J].Acta Physica Sinica,1998,47(1):27-34. |
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| Authors: | DU GUANG-SHENG WANG YAO-JUN YUAN YI-FENG and ZHAO QING-CHANG |
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| Abstract: | Using the “spring” model for a weak interface and the wave equations in cylindrical composite structures, we derive the generalized frequency equation for axisymmetric guided waves in a two-layered cylindrical composite structure with a weak interface- Numerical computations are made for dispersion characteristics of the axisymmetric guided waves in two-layered composite tubes(with or without water in hollow) and clad rods with rigid or slip interfaces- The influence of the shear stiffness of the weak interface on the lower order guided wave modes is studied- |
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