| Excitation of Elastic Wave of an Arbitrary Plane Source on Surface of a Multilayered Medium |
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| 作者姓名： | 张碧星 |
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| 作者单位： | Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grand No 10374098. |
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| 摘 要： | We investigate the elastic waves excited by an arbitrary plane piezoelectric source on the surface of a multilayered medium. Based on the previous studies, the 2D elastic wavefield in the multilayered medium is extended to 3D space. The propagator matrix for the 3D wavefield is investigated and the displacement-stress response for the boundary conditions is obtained. The excitation and propagation of the Rayleigh and Love waves are analysed further. It is found that the propagation velocity of the Rayleigh and Love waves does not depend on the propagation azimuth θ in the plane parallel to the free surface of the multilayered medium while the displacement is strongly dependent on the azimuth θ.
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| 关 键 词： | 弹性波 任意平面源 多层介质 传播矩阵 |
| 收稿时间： | 2006-06-16 |
| 修稿时间： | 2006-06-16 |
Excitation of Elastic Wave of an Arbitrary Plane Source on Surface of a Multilayered Medium |
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| ZHANG Bi-Xing.Excitation of Elastic Wave of an Arbitrary Plane Source on Surface of a Multilayered Medium[J].Chinese Physics Letters,2006,23(10):2803-2806. |
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| Authors: | ZHANG Bi-Xing |
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| Institution: | Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080 |
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