Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"cross-anisotropic"”.
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Characterization of Anisotropic Granular Layer Behavior in Flexible Pavements
… based on theories of elasticity to determine the cross-anisotropic material properties of unbound granular materials from triaxial repeated load testing with using UI-FastCell which has custom designed for testing unbound granular materials with unique capabilities. The cross-anisotropic behaviors …
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Pore Pressure Parameters and Cyclic Resistance Under Generalized Loading
… for isotropic material have been extended to cross anisotropic materials, and it was shown that the principles are applicable even for cross anisotropic materials under generalized initial loading conditions.
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Experimental investigation and constitutive modeling of marine clay
A new cross-anisotropic elasto-plastic constitutive model is developed based on experimental observations of marine clay from the Gulf of Mexico. Standard triaxial and torsional simple shear tests performed on the aforementioned clay demonstrate that the soil exhibits a cross-anisotropic behavior …
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Effect of in situ stresses on the stress analysis in soils by the finite element method
… stress strain relationship. Isotropic and cross anisotropic media were considered in the analysis. Also the effect of in situ stresses on the plastic analysis of a perfectly plastic media was investigated. Details of the programs developed for the analysis and the results of the problems …
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On Cross-Anisotropy of Flexible Pavement Layer Materials for Improved Pavement Responses
… and horizontal modulus (i.e., \u2260 ) are cross-anisotropic. Past studies have reported that degree of cross-anisotropy, ( ) ranges from 0.2 to 0.85 in Asphalt Concrete (AC) layers. Yet, the presence of cross-anisotropy is not considered in pavement layers for determining stress and …
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The determination of soil parameters for design from stress path tests
… of the elastic deformation properties of an anisotropic soil within the context of critical state soil mechanics. The soil tested is a heavily overconsolidated Gault Clay. Laboratory triaxial testing on 38 mm samples is used to measure and soil 100 mm diameter stiffness. A microcomputer-based …
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Multiscale modeling of clay-water systems
… water) and can be well-approximated using cross-anisotropic symmetries. The simulated adsorption isotherm and stiffness are compared with available experimental measurements. We develop a perturbation approach to investigate the free energy associated with relative positions of two clay …
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Analysis of tire-pavement interaction and pavement responses using a decoupled modeling approach
… granular base layer is modeled as a nonlinear anisotropic material. The FE pavement model was used to analyze critical pavement responses in thin and thick asphalt pavements considering different damage mechanisms. This dissertation concludes that knowledge of tire-pavement contact stress …