Chin. Phys. Lett.  2006, Vol. 23 Issue (10): 2803-2806    DOI:
Original Articles |
Excitation of Elastic Wave of an Arbitrary Plane Source on Surface of a Multilayered Medium
ZHANG Bi-Xing
Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080
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ZHANG Bi-Xing 2006 Chin. Phys. Lett. 23 2803-2806
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Abstract 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.
Keywords: 43.20.+g      43.35.+d     
Published: 01 October 2006
PACS:  43.20.+g (General linear acoustics)  
  43.35.+d (Ultrasonics, quantum acoustics, and physical effects of sound)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I10/02803
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