| 多层介质硬币形(Penny-Shaped)交界裂纹的弹性波散射 |
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| 引用本文： | 马兴瑞,邹振祝,黄文虎,邵成勋. 多层介质硬币形(Penny-Shaped)交界裂纹的弹性波散射[J]. 振动工程学报, 1988, 0(4) |
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| 作者姓名： | 马兴瑞 邹振祝 黄文虎 邵成勋 |
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| 作者单位： | 哈尔滨工业大学(马兴瑞，邹振祝，黄文虎)，哈尔滨工业大学(邵成勋) |
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| 摘 要： | 本文研究多层介质硬币形交界裂纹的弹性波散射.文中采用Hankel积分变换,得到了含有硬币形交界裂纹多层介质模型的散射波传递矩阵,并将散射问题为转化求解矩阵形式的对偶积分方程.作为特例,文中给出了单一弹性层与半空间的硬币形交界裂纹的弹性波散射远场模式,并计算了几组不同弹性常数组合情形下的远场模式的幅频特性曲线,其结果表明有共振峰存在.
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| 关 键 词： | 弹性波 散射 裂纹 传递矩阵 远场模式 |
Scattering of Elastic Wave by A Penny-Shaped Interface Crack in Multi-Layered Media |
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| Ma Xingrui,Zou Zhenzhu,Huang Wenhu,Shao Chengxun. Scattering of Elastic Wave by A Penny-Shaped Interface Crack in Multi-Layered Media[J]. Journal of Vibration Engineering, 1988, 0(4) |
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| Authors: | Ma Xingrui Zou Zhenzhu Huang Wenhu Shao Chengxun |
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| Affiliation: | Harbin Institute of Technology |
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| Abstract: | In this paper, the scattering of elastic wave by a penny-shaped interface carck in multi-layered media has been investigated. By Hankel integral transform,the transfer matrices of scattered wave in multi-layered media with a penny-shaped interface crack are obtained, and the problem is reduced to a set of dual integral equations in matrix form. As an example, the far field modes of scattering of elastic wave by the penny-shaped interface crack in a layered half space have been presented. Amplitudes in far field modes are plotted versus incident frequency for several groups of different elastic constants combinations,and numerical results show that resonanse peaks occur at some frequencies. |
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| Keywords: | elastic wave scattering. crack transfer matrices far field mode. |
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