Analysis of soil drying incorporating a constitutive model for curling

Maedo, Michael A.; Sánchez, Marcelo; Al-Jeznawi, Duaa; Manzoli, Osvaldo L.; Guimarães, L. J. N.; Cleto, Pedro

doi:10.1007/s11440-020-00920-0

Cited by 19 publications

(6 citation statements)

References 49 publications

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“…After the sample curled up, contact forces were larger in the middle of the sample both near the top and near the bottom to hold the sample up against gravity. Maedo et al (2020) observed a similar stress concentration when modeling soil curling with FEM. They found that curling will induce compression in the bottom of the sample and tension in the upper part of the sample.…”

Section: Model Resultssupporting

confidence: 55%

“…Maedo et al. (2020) observed a similar stress concentration when modeling soil curling with FEM. They found that curling will induce compression in the bottom of the sample and tension in the upper part of the sample.…”

Section: Numerical Modeling Of Soil Curlingmentioning

confidence: 67%

“…The soil stopped at a concave-curling state. Maedo et al (2020) simulated the curling process in mixture of kaolinite and sand and the curling did not reverse at the end because the retreat is hindered by the unshrinkable sand particles at the bottom. This explained the retreat of the curling in Group A when relatively uniform particle is used to represent the soil mass.…”

Section: Convex Curling In the Latter Stage Of Dryingmentioning

confidence: 99%

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Modeling of Drying‐Induced Soil Curling Phenomenon

Lin

Tang

Yang

et al. 2022

Water Resources Research

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Section: Model Resultssupporting

confidence: 55%

Section: Numerical Modeling Of Soil Curlingmentioning

confidence: 67%

Section: Convex Curling In the Latter Stage Of Dryingmentioning

confidence: 99%

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Modeling of Drying‐Induced Soil Curling Phenomenon

Lin

Tang

Yang

et al. 2022

Water Resources Research

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“…The behavior of clay rocks subjected to desiccation and hydration processes has been studied in the literature 34–38 . In some clay‐rich shales, these processes have been observed to induce changes in the degree of mechanical anisotropy 39,40 .…”

Section: Introductionmentioning

confidence: 99%

“…The behavior of clay rocks subjected to desiccation and hydration processes has been studied in the literature. [34][35][36][37][38] In some clay-rich shales, these processes have been observed to induce changes in the degree of mechanical anisotropy. 39,40 Mechanical anisotropy has been shown to be saturation-dependent in these rocks, with the anisotropy ratio generally increasing as the shale dehydrates.…”

Section: Introductionmentioning

confidence: 99%

Evolution of anisotropy with saturation and its implications for the elastoplastic responses of clay rocks

Borja

2021

Num Anal Meth Geomechanics

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Many clay rocks have distinct bedding planes. Experimental studies have shown that their mechanical properties evolve with the degree of saturation (DOS), often with higher stiffness and strength after drying. For transversely isotropic rocks, the effects of saturation can differ between the bed-normal (BN) and bedparallel (BP) directions, which gives rise to saturation-dependent stiffness and strength anisotropy. Accurate prediction of the mechanical behavior of clay rocks under partially saturated conditions requires numerical models that can capture the evolving elastic and plastic anisotropy with DOS. In this study, we present an anisotropy framework for coupled solid deformation-fluid flow in unsaturated elastoplastic media. We incorporate saturation-dependent strength anisotropy into an anisotropic modified Cam-Clay (MCC) model and consider the evolving anisotropy in both the elastic and plastic responses. The model was calibrated using experimental data from triaxial tests to demonstrate its capability in capturing strength anisotropy at various levels of saturation. Through numerical simulations, we demonstrate the role of evolving stiffness and strength anisotropy in the mechanical behavior of clay rocks. Plane strain simulations of triaxial compression tests were also conducted to demonstrate the impacts of material anisotropy and DOS on the mechanical and fluid flow responses.

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