Effective stress principle for saturated fractured porous media

An effective stress principle for saturated fractured porous media is proposed based On the double-porosity representation. Both the solid grains and the fractured porous medium are assumed to be linearly elastic materials. The derivation employs volume averaging technique to obtain macroscopic scale expressions. Two parameters, the bulk modulus of the fractured medium and bulk modulus of the porous matrix, are introduced in the formulation. The final expression reduces to the one obtained by Blot and Willis [1957], Skempton [1960], Nur and Byeerle [1971], and Verruijt [1984] when the volume fraction of the fractures vanishes, that is, for a nonfractured porous medium.


TEKKAYA, AE (1994-02-01)
Bulk and plane torsion tests are being used in industry to determine the flow curve of metals up to very high plastic strains. Despite their wide usage the experimental results obtained in torsion tests are still not being evaluated uniformly. Differences arise basically due to the conversion of the measured angle of twist into the corresponding equivalent strain. This paper shows that the often used equivalent strain expression by Nadai and Davis as well as Eichinger is invalid, since the so-called redunda...
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© 2021 COMPDYN Proceedings.Ductility demands observed in asymmetric plan structures due to earthquake excitations are investigated in this study. Torsional Ductility Spectra are utilized to estimate the maximum ductility response of such systems. Dynamic response of these systems are dominated by the lower vibration modes and observed seismic behavior is in conformance with the capacity design principles. In order to utilize the Torsional Ductility Spectra, five parameters of the asymmetric plan systems, na...
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The B-s(0) differential production cross section is measured as functions of the transverse momentum and rapidity in pp collisions at root s = 7 TeV, using the B-s(0) -> J/psi phi decay, and compared with predictions based on perturbative QCD calculations at next-to-leading order. The data sample, collected by the CMS experiment at the LHC, corresponds to an integrated luminosity of 40 pb(-1). The B-s(0) is reconstructed from the decays J/psi -> mu+mu- and phi -> K+K-. The integrated B-s(0) cross section ti...
Wave propagation in fractured porous media
Tuncay, Kağan (Springer Science and Business Media LLC, 1996-06-01)
A theory of wave propagation in fractured porous media is presented based on the double-porosity concept. The macroscopic constitutive relations and mass and momentum balance equations are obtained by volume averaging the microscale balance and constitutive equations and assuming small deformations. In microscale, the grains are assumed to be linearly elastic and the fluids are Newtonian. Momentum transfer terms are expressed in terms of intrinsic and relative permeabilities assuming the validity of Darcy's...
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Khachatryan, V.; et. al. (2011-02-01)
The differential cross section for the inclusive production of isolated prompt photons has been measured as a function of the photon transverse energy E-T(Gamma) in pp collisions at root s 7 TeV using data recorded by the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.9 pb(-1). Photons are required to have a pseudorapidity vertical bar eta(gamma)vertical bar 21 GeV, covering the kinematic region 0.006 < x(T) < 0.086. The measured cross section is found to be in agreem...
Citation Formats
K. Tuncay, “Effective stress principle for saturated fractured porous media,” WATER RESOURCES RESEARCH, pp. 3103–3106, 1995, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36063.