SPH model for fluid–structure interaction and its application to debris flow impact estimation

Dai, Zili; Huang, Yu; Cheng, Hualin; Liu, Fangzhou

doi:10.1007/s10346-016-0777-4

Cited by 141 publications

(50 citation statements)

References 54 publications

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“…The SPH method was proposed in 1997 for astrophysical applications (Gingold and Monaghan, 1977). Recently, this method has been widely applied to a large variety of engineering fields (Dai et al, 2017;Jamalabadi, 2020;Price and Laibe, 2020;Zhu and Zou, 2020). Compared to the mesh-based method, the major advantage of the SPH method is to bypass the need for numerical meshes and avoid the mesh distortion issue and a great deal of computational work to renew the mesh (Ma et al, 2020).…”

Section: Sph Algorithmmentioning

confidence: 99%

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

Dai

Wang

Yang

et al. 2020

Preprint

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Abstract. To analyse the kinetic characteristics of a rapid landslide that occurred on 9 April 2000 in Tibet, China, a meshfree numerical method named Smoothed Particle Hydrodynamics (SPH) is introduced, and two-dimensional and three-dimensional models are established in this work. Based on the numerical simulation, the landslide motion process is reproduced and the kinetic characteristics are analysed combined with the field investigation data. In the kinetic analysis, the landslide velocity, run-out distance, landslide accumulation, and energy features are discussed. Simulation results show that the landslide mass undergoes an acceleration stage after failure, then the kinetic energy dissipates gradually due to the friction and collision during the landslide propagation. Finally, the landslide mass blocks the Yigong river and forms a huge landslide dam and an extensive barrier lake. The peak velocity is calculated to be about 100 m/s, and the run-out distance is approximately 8,500 m. The simulation results basically match the data measured in field, thus verifying the good performance of the presented SPH model. This approach can provide a new way to predict hazardous areas and estimate the hazard intensity of rapid landslides.

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Section: Sph Algorithmmentioning

confidence: 99%

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

Dai

Wang

Yang

et al. 2020

Preprint

Self Cite

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“…These systems commonly consist of individual bodies with disproportional sizes and various shapes. The fines‐ballast granular structure typically exists at the railroad foundation, where the ratio between the volume of small (fines) and big particles (ballast) reaches a level of 1:10 . Components in the system could have distinctively different Young's modulus.…”

Section: Introductionmentioning

confidence: 99%

A hybrid material‐point spheropolygon‐element method for solid and granular material interaction

Jiang

et al. 2020

Numerical Meth Engineering

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Capturing the interaction between objects that have an extreme difference in Young's modulus or geometrical scale is a highly challenging topic for numerical simulation. One of the fundamental questions is how to build an accurate multi-scale method with optimal computational efficiency. In this work, we develop a material-point-spheropolygon discrete element method (MPM-SDEM). Our approach fully couples the material point method (MPM) and the spheropolygon discrete element method (SDEM) through the exchange of contact force information. It combines the advantage of MPM for accurately simulating elastoplastic continuum materials and the high efficiency of DEM for calculating the Newtonian dynamics of discrete near-rigid objects. The MPM-SDEM framework is demonstrated with an explicit time integration scheme. Its accuracy and efficiency are further analysed against the analytical and experimental data. Results demonstrate this method could accurately capture the contact force and momentum exchange between materials while maintaining favourable computational stability and efficiency. Our framework exhibits great potential in the analysis of multi-scale, multi-physics phenomena.

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“…The gridbased methods like FEM and FDM would encounter some numerical difficulties (e.g., severe mesh winding, twisting and distortion), when it comes to large-deformation problems. As a mesh-free particle method based on the Lagrangian description, the SPH method has an advantage in the simulation of large deformation [13] and has been widely used in the coupling modelling of solid phase and fluid phase [14][15][16][17][18]. In the aspect of solid-fluid coupling, a soil-water-coupled SPH modeling method had been developed to analyze the flowing behavior of liquefied soils, where liquefied sand was modeled as the water-saturated porous media [14].…”

Section: Introductionmentioning

confidence: 99%

“…In the aspect of solid-fluid coupling, a soil-water-coupled SPH modeling method had been developed to analyze the flowing behavior of liquefied soils, where liquefied sand was modeled as the water-saturated porous media [14]. At the same time, this model had been used to simulate the debris flow and regarded fluid-structure interaction as the repulsive solid-fluid force to assess the impact force of debris flows [15]. Meanwhile a two-phase-coupled SPH model in coordination with a constitutive model for unsaturated soils had been proposed to conduct the unsaturated seepage analysis of dike [16].…”

Section: Introductionmentioning

confidence: 99%

SPH‐Based Analysis on the Lateral Response of Pipe Culverts in the Flowing Process of Liquefied Sand

Wang

Zhang

et al. 2019

Mathematical Problems in Engineering

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This study proposes a solid-fluid-coupled Smoothed Particle Hydrodynamics model to investigate the behavior of pipe in the liquefied sand after failure. In this model, the liquefied soil is simulated as a Bingham fluid material combined with the equivalent Newtonian viscosity. Then the pipe culvert is treated as an elastic solid material, and the culvert-soil interaction is assumed as the solid-fluid coupling force. Verification has been conducted through a dam-break model to demonstrate the accuracy of simulating the flow behavior of liquefied sand. At the same time, the applicability of the SPH simulation in the two-phase-coupled force has been checked compared with previous researches. After that, parametric studies are performed on the lateral force and movement of pipe culverts in the flowing sand. The derived results demonstrate that the culvert size and buried depth are the significant factors when estimating the maximum lateral force of culvert-soil system, while the slope angle severely affects the run-out distance of culvert and the velocity of flowing sand.

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SPH model for fluid–structure interaction and its application to debris flow impact estimation

Cited by 141 publications

References 54 publications

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

Numerical investigation on the kinetic characteristics of the Yigong landslide in Tibet, China

A hybrid material‐point spheropolygon‐element method for solid and granular material interaction

SPH‐Based Analysis on the Lateral Response of Pipe Culverts in the Flowing Process of Liquefied Sand

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