Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A Bounding Surface Based Constitutive Model for Unsaturated Granular Soils
In this paper, a state-dependent, bounding surface plasticity model for simulation of the behavior of unsaturated granular soils is presented. The model is an extension of an existing critical state compatible, hyperelastic model for saturated granular soils. The hyperelastic nature of the model, in which elastic strains are obtained from free energy functions, satisfies the conservation of energy (first law of thermodynamics). Compatible with the mechanics of unsaturated soils, the model has a zero initial pure elastic region. To create an appropriate hydro-mechanical coupling, a new generation of Bishop’s effective stress theory is used in conjunction with a soil-water characteristic curve. With a given set of parameter values, the proposed model captures the main features of shear and volumetric behavior of unsaturated granular soils over wide ranges of matric suction, density, and net confining pressure.
A Bounding Surface Based Constitutive Model for Unsaturated Granular Soils
In this paper, a state-dependent, bounding surface plasticity model for simulation of the behavior of unsaturated granular soils is presented. The model is an extension of an existing critical state compatible, hyperelastic model for saturated granular soils. The hyperelastic nature of the model, in which elastic strains are obtained from free energy functions, satisfies the conservation of energy (first law of thermodynamics). Compatible with the mechanics of unsaturated soils, the model has a zero initial pure elastic region. To create an appropriate hydro-mechanical coupling, a new generation of Bishop’s effective stress theory is used in conjunction with a soil-water characteristic curve. With a given set of parameter values, the proposed model captures the main features of shear and volumetric behavior of unsaturated granular soils over wide ranges of matric suction, density, and net confining pressure.
A Bounding Surface Based Constitutive Model for Unsaturated Granular Soils
Kadivar, Mehdi (Autor:in) / Manahiloh, Kalehiwot Nega (Autor:in) / Kaliakin, Victor N. (Autor:in)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 833-843
21.03.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
A Bounding Surface Based Constitutive Model for Unsaturated Granular Soils
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