RESEARCH PAPERS: Rock Mechanics/Emerging Energy Technologies

The Role of Terzaghi Effective Stress in Linearly Elastic Deformation

[+] Author and Article Information
M. M. Carroll, N. Katsube

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

J. Energy Resour. Technol 105(4), 509-511 (Dec 01, 1983) (3 pages) doi:10.1115/1.3230964 History: Received December 01, 1982; Revised March 07, 1983; Online October 22, 2009


It has been shown that the overall strain of a fluid-filled porous elastic solid is not governed by the Terzaghi effective stress law. We show, in the context of anisotropic linear elasticity, that the overall strain may be resolved into a component which is the average strain of the solid matrix and a component due to change in relative pore geometry, and that the latter is determined by the Terzaghi effective stress. This leads to a simple form of the response laws and, in particular, to effective stress laws for overall strain (obtained previously) and for strain of the pore space.

Copyright © 1983 by ASME
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