Two-phase fully-coupled smoothed particle hydrodynamics (SPH) model for unsaturated soils and its application to rainfall-induced slope collapse

Feng, Ruo-feng; Fourtakas, Georgios; Rogers, Benedict D.; Lombardi, Doménico

doi:10.1016/j.compgeo.2022.104964

Cited by 19 publications

(6 citation statements)

References 81 publications

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“…The internal deformation of the landslide mass can be described by Adps. It can be seen that the color of the middle shear band deepens significantly as the initial particle distance becomes smaller, which may be attributed to the accumulation of numerical errors (Feng et al, 2022). Peng et al (2021) have also pointed out that the particle size-dependency in SPH modeling of large-scale landslides has a strong impact on the shear strain since the particle size determines the thickness of the basal shear zone.…”

Section: Convergence Analysismentioning

confidence: 99%

Section: Simulation Of Huangtian Landslide‐generated Surge Wavesmentioning

confidence: 99%

“…Zhang et al (2016Zhang et al ( , 2019 proposed and validated a two-phase coupled SPH model through the simulation of a dike failure test and conducting stability analysis of a soil slope. Feng et al (2022) presented a new fully-coupled SPH formulation for unsaturated soils, which investigates the influence of rainfall infiltration on slope stability and allows for the simulation of both triggering and post-failure mechanisms. These studies demonstrate the usefulness and efficiency of SPH in geotechnical and geological engineering applications, and highlight its ability to simulate a range of phenomena including slope stability, rainfall infiltration, and post-failure mechanisms.…”

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confidence: 99%

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Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

Huang

et al. 2023

Water Resources Research

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Large-scale landslides near restricted water bodies, such as lakes, dammed reservoirs, and mountain rivers, may generate huge surge waves that in turn cause casualties and building damage. For example, a catastrophic rockslide, with a large volume of approximately 3 × 10 8 m 3 , slipped and fell into the Vajont reservoir in Italy in 1963. The resultant surge wave overtopped the Vajont dam causing the death of nearly two thousand people (Panizzo et al., 2005). This type of disaster chain involves complex multi-physical and multiscale problems, including landslide deformation, free-surface capture, multiphase coupling, and strong three-dimensional (3D) structural evolution.Numerous experimental studies have been conducted using indoor water channels. Generally, according to the type of sliding mass, these studies can be divided into two categories such as rigid-body models (Ataie-Ashtiani

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Section: Convergence Analysismentioning

confidence: 99%

Section: Simulation Of Huangtian Landslide‐generated Surge Wavesmentioning

confidence: 99%

mentioning

confidence: 99%

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Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

Huang

et al. 2023

Water Resources Research

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“…Smooth particle hydrodynamics (SPH) 12,13 is a widely‐used meshless particle method which uses the kernel function for the point‐based interpolation and is based on strong form collocation method. SPH is easy to implement and is able to model extremely large deformations, and thus has been applied in various engineering fields, such as simulating the slope failure in geomechanics, 14 the ballistic penetration of armors in defense technology 15 the dynamic response of soft tissue in medical applications, 16 and so forth. Despite its strength in large deformation simulations, SPH suffers from the tension instability meaning that, the motion of particles may be unstable under tension, and, as a result, the nonphysical particle aggregation and dispersion may occur.…”

Section: Introductionmentioning

confidence: 99%

An implicit Updated Lagrangian Fragile Points Method with a support domain refinement scheme for solving large deformation problems

Dai,

Ke,

et al. 2024

Numerical Meth Engineering

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Engineering structures may undergo large deformations, but simulating is still challenging for existing numerical methods, for example, the element‐based methods struggle from the mesh distortion and the strong form particle‐based methods exhibit tensile instability. This article aims on presenting a novel numerical method for large deformation simulations, which is named the implicit Updated Lagrangian Fragile Points Method (ULFPM). The point‐based nature of the proposed method ensures immunity to mesh distortion, and its stability is guaranteed by its foundation on weak form formulations. For verifications, the proposed implicit ULFPM has been applied to several large deformation problems. For all the examples, the proposed method is able to provide reliable results with a good agreement with the reference results. Moreover, the implicit ULFPM performs better than the Finite Element Method to some extent for extremely large deformation problems. It is also discussed that the accuracy of the implicit ULFPM is improved significantly by using the support domain refinement scheme. The examples indicate that the proposed method can serve as a reliable tool for predicting the large deformations of structures in engineering practices.

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“…Peran geometri lereng sangat penting dalam analisis stabilitas dan perencanaan perkuatan[24][25]. Hal ini disebabkan oleh pengaruh geometri lereng terhadap tegangan dan pergerakan tanah pada lereng, yang secara langsung mempengaruhi kestabilan lereng tersebut[26], dengan kondisi awal lereng adalah 1V:2,5H.…”

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Optimasi Geometri Lereng dengan Evaluasi Nilai Faktor Keamanan Menggunakan Software Geostudio

Kottama,

Candra,

Rivianto

et al. 2023

JURMATEKS

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The slopes of the Widas watershed in Kutorejo Village, Bagor District, Nganjuk Regency were hit by a landslide, damaging a 50-meter-long road. This damage has an impact on the activities and mobility of residents. The impact of landslides caused enormous losses, both infrastructure damage and loss of life. Several studies have been carried out, in determining slope stability it is necessary to observe at the research location and determine the type of soil, soil consistency, and soil shear strength parameters. This research aims to determine the value of the safety factor (FK) on the slopes of the Widas River. This research began by conducting a case study, including interviews, collecting field survey data, taking soil samples, and laboratory testing. Slope stability analysis was carried out using Geostudio software. The research results show that the soil type is classified as Poorly Graded Sand (SP), and the soil consistency is classified as Non-Plastic soil with a liquid limit of 26.093 and a shear angle of 20° - 30°. Slope improvements were carried out by changing the slope geometry until a slope ratio of 1V:2H was obtained by creating two slope core models. The FK value increased from 1.007 to 1.107 and 1.437 to 1.585 under pore water pressure conditions. Thus, the slope modeling obtained can be used to overcome landslide problems.

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Two-phase fully-coupled smoothed particle hydrodynamics (SPH) model for unsaturated soils and its application to rainfall-induced slope collapse

Cited by 19 publications

References 81 publications

Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

An implicit Updated Lagrangian Fragile Points Method with a support domain refinement scheme for solving large deformation problems

Optimasi Geometri Lereng dengan Evaluasi Nilai Faktor Keamanan Menggunakan Software Geostudio

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