A unified transport-velocity formulation for SPH simulation of cohesive granular materials

Computers and Geotechnics, Год журнала: 2025, Номер 181, С. 107139 - 107139

Опубликована: Фев. 18, 2025

Язык: Английский

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Numerical Model for Granular Flow With Interstitial Fluid

International Journal for Numerical and Analytical Methods in Geomechanics, Год журнала: 2025, Номер unknown

Опубликована: Апрель 22, 2025

ABSTRACT We present a constitutive model for the mechanical behavior of granular flow both solid‐like and fluid‐like regimes. The stress rate tensor is decomposed into rate‐independent rate‐dependent parts. hypoplastic used part, while ‐type rheological employed part. Stokes number introduced to capture influence interstitial fluid viscosity within part model. performance demonstrated through numerical simulations element tests, encompassing materials granular‐fluid mixtures.

Язык: Английский

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A nonlocal kernel-based continuum damage model for compaction band formation in porous sedimentary rock

Computational Mechanics, Год журнала: 2024, Номер unknown

Опубликована: Окт. 4, 2024

Язык: Английский

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An Efficient SPH Framework for Modeling Binary Granular Mixtures and Implications for Granular Flows

International Journal for Numerical and Analytical Methods in Geomechanics, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 26, 2024

ABSTRACT A two‐way coupling numerical framework based on smoothed particle hydrodynamics (SPH) is developed in this study to model binary granular mixtures consisting of coarse and fine grains. The employs updated Lagrangian SPH simulate grains, with configurations at each time step, total efficiently grains without configurations. Riemann solver utilized introduce dissipation facilitate their To enhance computational efficiency, a multiple time‐stepping scheme initially applied manage the integration between Several experiments, including column collapse, low‐speed impact craters, flow impacting blocks, are conducted validate stability accuracy proposed algorithm. Subsequently, two more complex scenarios involving soil–rock mixture slope considering irregular shapes, bouldery debris flows natural terrain, simulated showcase potential engineering applications. Finally, detailed analysis performed evaluate efficiency advantages present approach. findings consistent previous experimental results, implementation can improve by up 600%, thereby providing significant for large‐scale simulations.

Язык: Английский

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Simulation of the failure and run-out processes of rotational–translational loess landslides using an SPH model considering strain softening

Acta Geotechnica, Год журнала: 2024, Номер 19(12), С. 7799 - 7820

Опубликована: Окт. 22, 2024

Язык: Английский

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Fault rupture propagation through stratified sand–clay deposits and engineered earth structures: a meshfree and critical-state modeling approach

Acta Geotechnica, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Язык: Английский

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A SPH Model Bridging Solid‐ and Fluid‐Like Behaviour in Granular Materials

International Journal for Numerical and Analytical Methods in Geomechanics, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 21, 2024

ABSTRACT We propose a smoothed particle hydrodynamics (SPH) model bridging the gap between solid‐ and fluid‐like behaviour observed in granular materials. The key innovation of proposed approach lies decomposition stress gradient into rate‐independent rate‐dependent parts, which are governed by hypoplastic constitutive relations, respectively. By using approach, we successfully capture transition flow regimes SPH scheme is rigorously validated through examination various boundary value problems, including collapse column, Taylor–Couette flow, silo flow.

Язык: Английский

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An improved two phases-two points SPH model for submerged landslide

Computers and Geotechnics, Год журнала: 2024, Номер 176, С. 106802 - 106802

Опубликована: Окт. 1, 2024

Язык: Английский

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