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RESEARCH PAPERS

The Modified Mixture Theory for Fluid-Filled Porous Materials: Theory

[+] Author and Article Information
N. Katsube

Department of Engineering Mechanics, The Ohio State University, Columbus, Ohio 43210

M. M. Carroll

Department of Mechanical Engineering, The University of California, Berkeley, Calif. 94720

J. Appl. Mech 54(1), 35-40 (Mar 01, 1987) (6 pages) doi:10.1115/1.3172991 History: Received June 15, 1984; Revised June 24, 1986; Online July 21, 2009

Abstract

The mixture theory by Green and Naghdi is modified and applied to the problems of flow-through porous materials. By introducing porosity, we make clear that two constituents occupying the same point in the original mixture theory are an equivalent homogeneous solid and an equivalent homogeneous fluid which, respectively, represent a porous solid and a porous fluid in the actual sample. The micro-mechanical response studied by Carroll and Katsube is introduced and detailed deformation and flow mechanisms are provided at each point of the mixture. The resulting theory is compared with Biot’s theory and in fact reduces to Biot’s theory when the fluid velocity gradient terms are ignored.

Copyright © 1987 by ASME
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