θ-STOCK, a powerful tool of thermohydromechanical behaviour and damage modelling of unsaturated porous media

Gatmiri, Behrouz; Arson, Chloé

doi:10.1016/j.compgeo.2008.08.008

Cited by 37 publications

(54 citation statements)

References 28 publications

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“…The framework of the fully coupled finite element formulation of deformable multiphase porous media proposed by Gatmiri and co-workers is used in this study [27][28][29][30]. In this formulation coupled effects of skeleton deformation, suction, and temperature changes with the concept of state surfaces of void ratio and degree of saturation are met.…”

Section: Partial Differential Equations and Finite Element Simulationmentioning

confidence: 99%

“…The above equation is moisture transfer equation [29,30]. D T , D , D w are thermal, isothermal, and gravitational moisture diffusivity, respectively.…”

Section: Partial Differential Equations and Finite Element Simulationmentioning

confidence: 99%

“…The sink term developed in this study has been integrated in the -STOCK finite element code to take into account the effect of root water uptake in unsaturated medium. The equations are briefly presented below (for details see [27][28][29][30]):…”

Section: Partial Differential Equations and Finite Element Simulationmentioning

confidence: 99%

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Modeling of settlement and induced matric suction in multiphase porous media under root water uptake effect by F.E.M

Gatmiri

Najari

2009

Numer Methods Biomed Eng

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SUMMARYThe existence of vegetation in unsaturated soil can change the moisture content of its nearby soil, especially in drought condition. This moisture content reduction produces matric suction in the soil. When the vegetation is capable of extracting significant amount of water and hence, producing large matric suction values, the study of the phenomenon becomes crucial. However, unfortunately, this phenomenon has always been neglected by geotechnical engineers. In this paper the authors have suggested a set of mathematical formulas, which sets the stage to study the effect of root water uptake in unsaturated soils. The root water uptake relationship has been written in the integral form of -STOCK formulation, a fully coupled formulation of unsaturated porous media proposed by Gatmiri at CERMES-ENPC. It is shown that the results of finite element simulations of the model for case studies, which are presented in this paper, are in good agreement with the results of other works and field measurements. Finally, the settlement of a strip footing near a row of trees is studied. It is shown that how vegetation water uptake can impose settlement to residential municipalities.

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Section: Partial Differential Equations and Finite Element Simulationmentioning

confidence: 99%

“…The above equation is moisture transfer equation [29,30]. D T , D , D w are thermal, isothermal, and gravitational moisture diffusivity, respectively.…”

Section: Partial Differential Equations and Finite Element Simulationmentioning

confidence: 99%

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Modeling of settlement and induced matric suction in multiphase porous media under root water uptake effect by F.E.M

Gatmiri

Najari

2009

Numer Methods Biomed Eng

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“…Nonlinear elastic, elastoplastic and elasto-damage constitutive laws as well as soilatmosphere interaction model have already been incorporated in the code [21][22][23][24][25].…”

Section: Formulation Of Plastic Behaviourmentioning

confidence: 99%

“…[25][26][27]). First, a triaxial lateral extension test was back-analyzed to adjust the preliminary parameters so as to obtain parameters that yielded the best fit to the experimental result.…”

Section: Numerical Modelling and Verificationmentioning

confidence: 99%

Plasto-damage modelling for semi-brittle geomaterials

Alizadeh

Gatmiri

2016

E3S Web Conf.

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Abstract. This paper presents an elastoplastic damage model for constitutive modelling of semi-brittle geomaterials showing two irreversible mechanisms. On one hand, the model deals with the plastic behaviour of a porous medium by a new variant of Barcelona Basic Model. On the other hand, the model combines the micromechanical definition of damage and phenomenological concepts in the framework of Continuum Damage Mechanics (CDM) for damage modelling. A second order tensorial damage variable is adopted for the model. Damaged effective stress variables are employed for formulation of elastoplastic behaviour laws and the plastic yield surface is a damage dependent one. The model has been validated by comparing the numerical results with experimental results of argillites.

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References

2014

Extended Finite Element Method

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θ-STOCK, a powerful tool of thermohydromechanical behaviour and damage modelling of unsaturated porous media

Cited by 37 publications

References 28 publications

Modeling of settlement and induced matric suction in multiphase porous media under root water uptake effect by F.E.M

Modeling of settlement and induced matric suction in multiphase porous media under root water uptake effect by F.E.M

Plasto-damage modelling for semi-brittle geomaterials

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