Modeling the Swelling Behavior of Clayey Geomaterials Across Scales: Advances and Challenges DOI

Hamza Mhamdi Alaoui,

Chaofa Zhao,

Wenbo Niu

et al.

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

ABSTRACT Most soils and rocks contain varying fractions of clay minerals within their solid matrix. These geomaterials can exhibit a significant swelling potential toward chemo‐thermo‐hydromechanical loadings. Several multiscale modeling techniques have been developed to ascertain behavior across various scales, with molecular dynamics (MD), micromechanics‐based approaches, double‐porosity models being the most common. MD simulation is computational technique that applies Newton's second law motion depict movement particles granular system. Micromechanics‐based approaches upscale poro‐elasticity from layer level sample scale through homogenization. Dual‐porosity are generally based on elasto‐plasticity, incorporating different hydro‐mechanical laws at two distinct scales. extensively used, particularly for clayey bentonites, though application has not reported in literature. Although contribution understanding behavior, these insufficiently reviewed, compared, discussed mutually This paper aims provide cross‐look by presenting theoretical background existing formulations, highlighting breakthrough results, discussing major differences current challenges, proposing future perspectives.

Language: Английский

Modeling Poroelastic Response of an Unsaturated, Multi-layer Soil with Gravity Effect to time-invariant stress loading DOI

Wei‐Cheng Lo,

Nan‐Chieh Chao,

Jhe-Wei Lee

et al.

Advances in Water Resources, Journal Year: 2025, Volume and Issue: unknown, P. 104918 - 104918

Published: Feb. 1, 2025

Language: Английский

Citations

0
Homogeneity Equation for the Effective Elastic Properties of Heterogenous Rocks Developed From Machine Learning DOI Creative Commons
Elsa Maalouf,

H. Kareem,

Hussein Chebli

et al.

Journal of Geophysical Research Machine Learning and Computation, Journal Year: 2025, Volume and Issue: 2(1)

Published: March 1, 2025

Abstract This study develops an artificial neural network (ANN) model designed to estimate the effective elastic properties of heterogeneous rocks with inclusions. The ANN addresses limitations traditional medium models by avoiding theoretical assumptions, such as low inclusion percentages, and it incorporates effects length, spacing orientation. approach enables accurate calculation equation that links dimensionless geometrical physical features their equivalent Young's modulus Poisson's ratio. A two‐dimensional finite element is employed calculate, through dynamic loading, ratio matrix comparable sandstones shales has ellipsoidal inclusions representing cracks. While this focuses on a single type, results demonstrate method can be extended any combination properties. numerical validated against experimental analytical solutions for simple geometries then used generate training data, inputs including crack density, aspect ratio, distances between ANN, though dependent testing, operates much faster applied broader range scenarios. By single‐layer network, homogeneity derived, relating parameters. obtain applications in rock mechanics, geophysics, composite materials.

Language: Английский

Citations

0
Modeling the Swelling Behavior of Clayey Geomaterials Across Scales: Advances and Challenges DOI

Hamza Mhamdi Alaoui,

Chaofa Zhao,

Wenbo Niu

et al.

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

ABSTRACT Most soils and rocks contain varying fractions of clay minerals within their solid matrix. These geomaterials can exhibit a significant swelling potential toward chemo‐thermo‐hydromechanical loadings. Several multiscale modeling techniques have been developed to ascertain behavior across various scales, with molecular dynamics (MD), micromechanics‐based approaches, double‐porosity models being the most common. MD simulation is computational technique that applies Newton's second law motion depict movement particles granular system. Micromechanics‐based approaches upscale poro‐elasticity from layer level sample scale through homogenization. Dual‐porosity are generally based on elasto‐plasticity, incorporating different hydro‐mechanical laws at two distinct scales. extensively used, particularly for clayey bentonites, though application has not reported in literature. Although contribution understanding behavior, these insufficiently reviewed, compared, discussed mutually This paper aims provide cross‐look by presenting theoretical background existing formulations, highlighting breakthrough results, discussing major differences current challenges, proposing future perspectives.

Language: Английский

Citations

0