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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Flume investigation of debris flow entrained boulders with cylindrical baffles and a rigid barrier

Engineering Geology, Год журнала: 2024, Номер unknown, С. 107836 - 107836

Опубликована: Ноя. 1, 2024

Язык: Английский

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Coupled SPH-FEM analysis of piled power transmission tower system subjected to debris flow

Computers and Geotechnics, Год журнала: 2024, Номер 168, С. 106176 - 106176

Опубликована: Фев. 24, 2024

Язык: Английский

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Impact of the Source Material Gradation on the Disaster Mechanism of Underground Debris Flows in Mines

Sustainability, Год журнала: 2024, Номер 16(20), С. 8788 - 8788

Опубликована: Окт. 11, 2024

In mines where the natural caving method is used, frequent occurrence of underground debris flows and complex mine environments make it difficult to prevent control flows. The source one critical conditions for formation flows, studying impact material gradation on debris-flow disasters can effectively help these occurrences. This paper describes a multiscale study using physical model experiments discrete-element (PFC3D) understand disaster mechanism from macroscopic microscopic perspectives. Macroscopically, an increase in content medium large particles will enhance instantaneous destructive force. Large more easily cause than fine with same content, but disaster-causing ability minimized when contents exceed 50% 60%, respectively. With increasing particle long-distance duration increased. On level, source-level pairs affect initial flow mode, concentration area force chain, average velocity, runout distance, change energy flow. Among them, proportion significantly affects kinetic energy, dissipative time reach peak coincidence gravitational potential energy. process be divided into “sudden stage”, “continuous “convergence accumulation stage”. work reveals close relationship between highlights necessity considering prevention It provide important basic theory environmental urban sustainable development.

Язык: Английский

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Analysis of the runout distance and impact force of an actual landslide considering the effect of single rigid barrier using an SPH approach

Acta Geotechnica, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 13, 2024

Язык: Английский

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