Computational Large‐Deformation‐Plasticity Periporomechanics for Localization and Instability in Deformable Porous Media DOI Open Access
Xiaoyu Song,

Hossein Pashazad,

Andrew J. Whittle

et al.

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

Published: Dec. 29, 2024

ABSTRACT In this article, we formulate a computational large‐deformation‐plasticity (LDP) periporomechanics (PPM) paradigm through multiplicative decomposition of the deformation gradient following notion an intermediate stress‐free configuration. PPM is nonlocal meshless formulation poromechanics for deformable porous media integral equations in which material represented by mixed points with poromechanical interactions. Advanced constitutive models can be readily integrated within framework. paper, implement linearly elastoplastic model Drucker–Prager yield and post‐peak strain softening (loss cohesion). This accomplished using return mapping algorithm LDP. The paper presents series numerical examples that illustrate capabilities to simulate development shear bands, large plastic deformations, progressive slope failure mechanisms. We also demonstrate results are robust stable point density (grid spacing). complex retrogressive observed sensitive St. Monique clay was triggered toe erosion. analysis captures distribution horst graben structures were failed mass.

Language: Английский

Modeling dynamic crack branching in unsaturated porous media through multi‐phase micro‐periporomechanics DOI Open Access

Hossein Pashazad,

Xiaoyu Song

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2024, Volume and Issue: 48(11), P. 2822 - 2853

Published: May 3, 2024

Abstract Dynamic crack branching in unsaturated porous media holds significant relevance various fields, including geotechnical engineering, geosciences, and petroleum engineering. This article presents a numerical investigation into dynamic using recently developed coupled micro‐periporomechanics (PPM) paradigm. paradigm extends the PPM model by incorporating micro‐rotation of solid skeleton. Within this framework, each material point is equipped with three degrees freedom: displacement, micro‐rotation, fluid pressure. Consistent Cosserat continuum theory, length scale associated points inherently integrated model. study encompasses several key aspects: (1) Validation micro‐PPM for effectively modeling deformable media, (2) Examination transition from single branch to multiple branches under drained conditions, (3) Simulation loading (4) Investigation conditions. The results obtained are systematically analyzed elucidate factors that influence subjected loading. Furthermore, comprehensive findings underscore efficacy robustness accurately variably saturated media.

Language: Английский

Citations

6
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
Cracking in Frozen Soils through a Nonlocal THM Meshfree Paradigm DOI
Xiaoyu Song,

Hossein Pashazad

Geotechnical Frontiers 2017, Journal Year: 2025, Volume and Issue: unknown, P. 137 - 147

Published: Feb. 27, 2025

Language: Английский

Citations

0
Liquefaction of Unsaturated Soils through a Nonlocal Meshfree Method with Bounding Surface Plasticity DOI
Xiaoyu Song,

Hossein Pashazad

Geotechnical Frontiers 2017, Journal Year: 2025, Volume and Issue: unknown, P. 126 - 136

Published: Feb. 27, 2025

Language: Английский

Citations

0
The Peridynamic Material Correspondence Models: A State-of-the-Art Review on Stabilization Schemes DOI
Donglai Liu, Hailong Chen, Xuan Hu

et al.

Journal of Peridynamics and Nonlocal Modeling, Journal Year: 2025, Volume and Issue: 7(1)

Published: March 1, 2025

Language: Английский

Citations

0
Shear Banding and Cracking in Unsaturated Porous Media through a Nonlocal THM Meshfree Paradigm DOI Creative Commons

Hossein Pashazad,

Xiaoyu Song

Geosciences, Journal Year: 2024, Volume and Issue: 14(4), P. 103 - 103

Published: April 9, 2024

The mechanical behavior of unsaturated porous media under non-isothermal conditions plays a vital role in geo-hazards and geo-energy engineering (e.g., landslides triggered by fire geothermal energy harvest foundations). Temperature increase can trigger localized failure cracking media. This article investigates the shear banding through thermo–hydro–mechanical (THM) periporomechanics (PPM) paradigm. PPM is nonlocal formulation classical poromechanics using integral equations, which robust simulating continuous discontinuous deformation As new contribution, we formulate THM constitutive model for paradigm this study. meshfree implemented an explicit Lagrangian algorithm. return mapping algorithm used to implement numerically. Numerical examples are presented assess capability proposed mesh-free modeling conditions. numerical results examined study effect temperature variations on formation

Language: Английский

Citations

3
Shear band static evolution based on complementarity method and the improved numerical manifold method DOI

Zibo Fan,

Hong Zheng, Xinyu Huang

et al.

Engineering Analysis with Boundary Elements, Journal Year: 2024, Volume and Issue: 166, P. 105824 - 105824

Published: June 12, 2024

Language: Английский

Citations

1
Cosserat constitutive theory and one of its higher-order forms: A rediscussion on the mesh dependence problem DOI
Lingfeng Guo, Xiaolong Li, Danqing Song

et al.

Finite Elements in Analysis and Design, Journal Year: 2024, Volume and Issue: 241, P. 104224 - 104224

Published: Aug. 1, 2024

Language: Английский

Citations

1
Dense granular flow described by micropolar fluid and its peridynamic implementation DOI
Ji Wan, Wenzhong Qu, Xihua Chu

et al.

Acta Geotechnica, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 25, 2024

Language: Английский

Citations

1
Computational Large‐Deformation‐Plasticity Periporomechanics for Localization and Instability in Deformable Porous Media DOI Open Access
Xiaoyu Song,

Hossein Pashazad,

Andrew J. Whittle

et al.

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

Published: Dec. 29, 2024

ABSTRACT In this article, we formulate a computational large‐deformation‐plasticity (LDP) periporomechanics (PPM) paradigm through multiplicative decomposition of the deformation gradient following notion an intermediate stress‐free configuration. PPM is nonlocal meshless formulation poromechanics for deformable porous media integral equations in which material represented by mixed points with poromechanical interactions. Advanced constitutive models can be readily integrated within framework. paper, implement linearly elastoplastic model Drucker–Prager yield and post‐peak strain softening (loss cohesion). This accomplished using return mapping algorithm LDP. The paper presents series numerical examples that illustrate capabilities to simulate development shear bands, large plastic deformations, progressive slope failure mechanisms. We also demonstrate results are robust stable point density (grid spacing). complex retrogressive observed sensitive St. Monique clay was triggered toe erosion. analysis captures distribution horst graben structures were failed mass.

Language: Английский

Citations

0