Global ETD Search
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Showing 1 to 5 of 5 for “"Stress Induced Anisotropy"”.
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A chemoplastic model for alkali-silica expansion : effect of stress-induced anisotropy
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2000.
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Geomechanics and elastic anisotropy of the Bakken Formation, Williston Basin
… rocks exhibit anisotropic characteristics. Anisotropy is particularly common in many sedimentary rocks, such as shales. Anisotropy is defined as the spatial alignment of mineral grains, layers, fractures and stresses which causes elastic wave velocity and other elastic properties to vary …
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Effect of Confinement and Temperature on the Behavior of EPS Geofoam
… loading. Effects of confining pressure on the stress-strain behavior of EPS geofoam have been investigated in previous studies. Some studies found increases in confining stress lead to corresponding decreases in both modulus and compressive strength. Increasing confining stress has also been …
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The measurement and interpretation of small strain stiffness of soils
… loading in the triaxial apparatus up to high stresses. A new system of LVDTs has been used to measure axial strain locally during continuous loading while dynamic stiffnesses were measured using bender elements. Using the two methods good agreement was found between the stiffnesses at 0.0001% …
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Modeling nonlinear material behavior at the nano and macro scales
… for similar indentation depths but the contact stress necessary to emit the first dislocation under the indenter is nearly independent of film thickness. The presence of grain boundaries in the films leads to the emission of dislocations at a lower applied stress. For a single crystal Ni thin …