Results 191 to 200 of about 1,146,381 (249)

Endochronic Modeling of Sand in True Triaxial Test

Journal of Engineering Mechanics, 1985
The endochronic constitutive equation is written in differential form, which is then used to describe the deviatoric behavior of drained sand in true triaxial test. Explicit equations have been derived. The modified concept of intrinsic time is applied so that no built‐in discontinuities exist in the constitutive equation. Triaxial compression test (TC)
Han C. Wu, Zhan K. Wang, M. R. Aboutorabi   +2 more
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A rock test cell with true triaxial capability

Geotechnical & Geological Engineering, 1999
Conventional so-called triaxial test cells apply the axial stress to a cylindrical sample using steel platens, with the confining stress developed via an annulus of hydraulic fluid retained by a liner in a pressure cell. This does not allow differentiation between the two principal stresses around the core and inhibits the realism with which the rocks ...
B.D.G. Smart, J.M. Somerville, B.R. Crawford   +2 more
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True Triaxial Tests on Natural Shanghai Clay

2018
Drained true triaxial tests on undisturbed and remolded Shanghai silty clay were carried out to investigate the influence of intermediate principle stress on the strength and deformation of natural clay. Test results show that not only the shear strength, but also the volume change of Shanghai clay decreases with the increase of Lode angle θ. The shear
Guan-lin Ye, Shuo Zhang, Yun-qi Song, Jian-hua Wang   +3 more
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Analysis of Shear Banding in True Triaxial Tests on Sand

Journal of Engineering Mechanics, 2001
A series of true triaxial tests have been performed on rectangular prismatic specimens of Santa Monica Beach sand at three different relative densities to study the occurrence of failure, mechanism...
Lade, Poul V., Wang, Q.
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Behaviour of carbonated rocks under true triaxial compression

2011
SCOPUS: ch.b ; info:eu-repo/semantics ...
Descamps, Fanny, Tshibangu, Jean-Pierre, Ramos Da Silva, Mikaël, Schroeder, Christian, Verbrugge, Jean-Claude   +4 more
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Results of true triaxial strength tests on rock salt

Engineering Fracture Mechanics, 1990
Abstract Knowledge of the thermomechanical properties of rock salt is important for the dimensioning of a permanent repository for radioactive wastes in a salt dome and for the necessary safety analysis, as well as for the design of mines and caverns.
U Hunsche, H Albrecht
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Strain Localization Conditions Under True Triaxial Stress States

2011
This work uses a bifurcation approach to develop theoretical predictions for deformation band formation for a suite of true triaxial tests on Castlegate sandstone. In particular, the influence of the intermediate principal stress on strain localization is examined.
Kathleen A. Issen, Mathew D. Ingraham, Thomas A. Dewers   +2 more
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Simulation of Pressuremeter Shearing Mode by True Triaxial Apparatus

Geotechnical Testing Journal, 2007
Abstract Pressuremeters are commonly used for determining the modulus of soil in the field. The shearing plane of the pressuremeter differs from those in the conventional laboratory strength tests; therefore the moduli obtained from these tests may be different.
TH Seah, D Shrestha
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Petrophysical Studies of Sandstones under True-Triaxial Stress Conditions

63rd EAGE Conference & Exhibition, 2001
Development of an innovative polyaxial (true-triaxial) stress loading system is described. The system was originally designed to determine ultrasonic velocities, fluid permeability and elastic properties on cubic rock specimens in which sets of orientated fractures and microcracks had been introduced.
M.S. King, X.D. Jing, J.R. Marsden
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Hydraulic fracturing stress measurement using a true triaxial apparatus

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1997
Abstract Generally, from pressure-time curves obtained in underground hydralulic fracture tests one can determine the breakdown pressure Pc, the fracture reopening pressure Pr and the shut-in pressure Ps. These pressure values are then used for the calculation of the in situ stress state.
Sibai, M., Henry, J.P., Gros, J.C.
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