A three-dimensional finite difference method (FDM) has been developed for the computation of elastic wave propagation in finite media containing a macrocrack, with a new treatment of boundary conditions of surfaces. The method can be used for the simulation of dynamic Green’s functions of an arbitrary rectangular parallelepiped medium with a macrocrack such as a compact tension (CT) specimen. The validity of the method has been confirmed by comparison with theoretical solutions of the plate problem for a monopole source and a double source. The method was then applied to the computation of Green’s functions for a seismic moment in CT specimen. Evaluation of Green’s function by this three-dimensional FDM leads to more accurate acoustic emission (AE) source characterization.
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January 1990
Research Papers
Dynamic Green’s Function of Finite Media by Finite Difference Method
Y. Fukunaga,
Y. Fukunaga
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
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M. Enoki,
M. Enoki
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
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T. Kishi,
T. Kishi
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
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J. Kihara
J. Kihara
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
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Y. Fukunaga
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
M. Enoki
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
T. Kishi
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
J. Kihara
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153, Japan
J. Vib. Acoust. Jan 1990, 112(1): 45-52 (8 pages)
Published Online: January 1, 1990
Article history
Received:
May 24, 1988
Online:
June 17, 2008
Citation
Fukunaga, Y., Enoki, M., Kishi, T., and Kihara, J. (January 1, 1990). "Dynamic Green’s Function of Finite Media by Finite Difference Method." ASME. J. Vib. Acoust. January 1990; 112(1): 45–52. https://doi.org/10.1115/1.2930097
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