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    Coupled Hydro-Mechanical Elastoplastic Constitutive Model for Unsaturated Sands and Silts. I: Formulation

    Source: International Journal of Geomechanics:;2012:;Volume ( 012 ):;issue: 003
    Author:
    Chunyang Liu
    ,
    Kanthasamy K. Muraleetharan
    DOI: 10.1061/(ASCE)GM.1943-5622.0000146
    Publisher: American Society of Civil Engineers
    Abstract: Unsaturated soils are three-phase porous media consisting of a solid skeleton, pore water, and pore air. The behavior of unsaturated soils is strongly influenced by the matric suction (pore air pressure minus the pore water pressure). Soil water characteristic curves (SWCCs) describe the relationship between matric suction and water content in unsaturated soils and, therefore, capture the hydro-behavior of soils. SWCCs show hysteretic behavior that not only depends on the wetting or drying history of the soil, but also on the stress-strain history (mechanical behavior) of a soil. The hydro-behavior of unsaturated soils, on the other hand, influences the mechanical behavior through matric suction. To predict the behavior of unsaturated soils, a hysteretic SWCC model is proposed based on the bounding surface plasticity concept. The model for hysteretic SWCCs is then incorporated into a constitutive model for unsaturated sands and silts in the general stress space. The resulting model is a comprehensive constitutive model that accounts for the coupling effects between hydro- and mechanical behavior of unsaturated sands and silts in the general stress space. The numerical integration of the constitutive equations and model calibration and validation are presented in a companion paper.
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      Coupled Hydro-Mechanical Elastoplastic Constitutive Model for Unsaturated Sands and Silts. I: Formulation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/61546
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    • International Journal of Geomechanics

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    contributor authorChunyang Liu
    contributor authorKanthasamy K. Muraleetharan
    date accessioned2017-05-08T21:45:23Z
    date available2017-05-08T21:45:23Z
    date copyrightJune 2012
    date issued2012
    identifier other%28asce%29gm%2E1943-5622%2E0000158.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/61546
    description abstractUnsaturated soils are three-phase porous media consisting of a solid skeleton, pore water, and pore air. The behavior of unsaturated soils is strongly influenced by the matric suction (pore air pressure minus the pore water pressure). Soil water characteristic curves (SWCCs) describe the relationship between matric suction and water content in unsaturated soils and, therefore, capture the hydro-behavior of soils. SWCCs show hysteretic behavior that not only depends on the wetting or drying history of the soil, but also on the stress-strain history (mechanical behavior) of a soil. The hydro-behavior of unsaturated soils, on the other hand, influences the mechanical behavior through matric suction. To predict the behavior of unsaturated soils, a hysteretic SWCC model is proposed based on the bounding surface plasticity concept. The model for hysteretic SWCCs is then incorporated into a constitutive model for unsaturated sands and silts in the general stress space. The resulting model is a comprehensive constitutive model that accounts for the coupling effects between hydro- and mechanical behavior of unsaturated sands and silts in the general stress space. The numerical integration of the constitutive equations and model calibration and validation are presented in a companion paper.
    publisherAmerican Society of Civil Engineers
    titleCoupled Hydro-Mechanical Elastoplastic Constitutive Model for Unsaturated Sands and Silts. I: Formulation
    typeJournal Paper
    journal volume12
    journal issue3
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0000146
    treeInternational Journal of Geomechanics:;2012:;Volume ( 012 ):;issue: 003
    contenttypeFulltext
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