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RESEARCH PAPERS

Wave Propagation Through Elastically-Anisotropic Fluid-Saturated Porous Rocks

[+] Author and Article Information
P. J. Digby

Division of Rock Mechanics, University of Luleå, S-951 87 Luleå, Sweden

K. Walton

School of Mathematical Sciences, University of Bath, Claverton Down, Bath BA2 7AY, U.K.

J. Appl. Mech 56(4), 744-750 (Dec 01, 1989) (7 pages) doi:10.1115/1.3176167 History: Received June 10, 1988; Revised January 19, 1989; Online July 21, 2009

Abstract

An elastically-anisotropic sedimentary rock is modeled by a simple cubic packing of identical, contacting spherical particles. The connected pore space is filled with an inviscid, compressible fluid. A set of averaged equations is derived to relate the constitutive and dynamic coupling coefficients, and hence also the effective wave speeds in any given direction explicitly to the microstructural properties of the rock considered. Simple, explicit results are obtained when the propagation of either a purely longitudinal or a purely transverse wave is considered.

Copyright © 1989 by ASME
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