A coupled SPH–DEM model for erosion process of solid surface by abrasive water-jet impact

Yu, Ran; Dong, Xiangwei; Li, Zengliang; Fan, Menghao

doi:10.1007/s40571-023-00555-4

Cited by 10 publications

(3 citation statements)

References 55 publications

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“…Although finite element methods (FEMs), such as Eulerian or Lagrangian methods, have good computational accuracy, they may suffer from calculation termination due to grid distortion when dealing with large deformation. Although the smooth particle dynamics method (SPH) may not have the same computational accuracy as the FEM method, it has a wide range of applications in the field of impact collision and stress wave failure due to its lack of grid elements, strong adaptability, and ability to be quickly calculated [41]. In the process of a particle pulsed jet impinging on rock, if the high-speed pulsed water jet, particle flow, and rock are modeled using the SPH method, the calculation cost is greatly increased.…”

Section: Smooth Particle Dynamics Coupled With Finite Element Methodsmentioning

confidence: 99%

Study on Mechanism and Regularity of Rock Breaking by Pulsed Water Injection with Particles

Zhao,

Wu,

et al. 2023

Processes

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In recent years, the drilling technology applied to deep and ultra-deep formations has developed rapidly, but the drilling speed for hard formations is low. Therefore, it is very important to study the drilling methods for deep and hard strata. Particle pulsed jet drilling is a new drilling method based on particle jet impact drilling technology and high-pressure pulsed water jet impact drilling technology. In this paper, the mathematical models of the shear layer amplification coefficient and wave velocity are established based on a similar network theory, and the motion equations of a single particle and particle swarm are established according to the motion of particles in a pulsed jet environment. Then, based on the self-designed particle jet impact rock-breaking experimental platform, the numerical simulation results are compared, analyzed, and verified. The results show that the rock-breaking efficiency increases with the increase in the average velocity of the particle pulsed jet. When the average speed exceeds 160 m/s, the rock-breaking efficiency increases significantly. With the increase in the particle concentration, the rock-breaking efficiency of the particle pulsed jet also increases, but there is an optimal value. When the concentration is too high, the impact of particles on the rock is affected by the collision between particles, and the wear of the drill intensifies. This research is helpful for understanding deep-well drilling-speed-increasing technology and promotes the development and engineering applications of particle jet impact drilling theory.

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Section: Smooth Particle Dynamics Coupled With Finite Element Methodsmentioning

confidence: 99%

Study on Mechanism and Regularity of Rock Breaking by Pulsed Water Injection with Particles

Zhao,

Wu,

et al. 2023

Processes

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“…Liczbę cząstek w modelu SPH zawiesiny wodno-ściernej ustalano na podstawie ich zawartości procentowej i prędkości strumienia masy. Ze względu na długi czas symulacji lepszym rozwiązaniem jest połączenie metody SPH z DEM (discrete element method) [27], tak że dyskretyzacja strumienia wody i przedmiotu następuje z użyciem cząstek SPH, a każde ziarno ścierne jest modelowane jako cząstka DEM. Cząstki SPH i DEM są łączone na podstawie obliczanych sił interakcji między tymi fazami i odniesione do lokalnej porowatości strumienia wodno-ściernego.…”

Section: Symulacja Obróbki śCiernej I Hybrydowej Wspomaganej śCiernieunclassified

“…W rezultacie przedstawiono wizualizację ewolucji uderzenia strugi wodno-ściernej o swobodną powierzchnię elementu z miedzi OFHC z widocznymi odkształceniami plastycznymi i niewielkimi lokalnymi wgłębieniami (mikrokraterami). Symulację przeprowadzono w 60 000 krokach czasowych w czasie 840 s [27].…”

Section: Symulacja Obróbki śCiernej I Hybrydowej Wspomaganej śCiernieunclassified

Progress in modelling and simulation of the machining process – part II: Mesh-free modelling and simulation

Grzesik

2024

Mechanik

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In this paper some rules of mesh-free/meshless modelling and numerical simulations of fundamental physical phenomena associated with the machining process, including mechanisms of plastic deformation, chip formation and interfacial friction are overviewed. Some representative examples of the mesh-free modelling application to material removal processes at different scales, i.e.: machining processes, water jet-assisted processes, additive machining processes and simulation of micromachining processes using predominantly SPH (smoothed particle hydrodynamics) method are given.

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An investigation of compliant contact force models applied for analysis of simultaneous, multi-zone impacts of particles

Warzecha

2023

Comp. Part. Mech.

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Compliant contact force models were developed and mainly used to investigate simple impacts of two bodies. It is therefore unclear how they will perform in more complex cases, where simultaneous, multi-zone impact may occur. The aim of this study is to investigate phenomena that occur in such impacts and to study the effectiveness of preselected contact force models in their modelling. For this purpose, the study addressed collisions that occur in a collinear system of 3 to 6 particles made of steel, aluminium, and bronze. The results obtained for each force model were referenced to the FEM analysis. To compare the performance of the models, the Benchmark Velocity Indicator (BVI) is proposed. The study showed that during simultaneous, multi-zone impact direct switch from the restitution to compression phases may occur and subsequent collision along the same normal may take place. Such phenomena are not incorporated in current compliant contact force models; therefore, the study showed the need for their further improvement. The best models proposed by Kogut and Etsion (KE) and Jackson and Green (JG) achieved average errors equal to 3.89% and 4.15%, respectively. However, the same models in their worst cases reached error values of 38.66% and 33.77%. The article concludes with proposals for future improvements.

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A coupled SPH–DEM model for erosion process of solid surface by abrasive water-jet impact

Cited by 10 publications

References 55 publications

Study on Mechanism and Regularity of Rock Breaking by Pulsed Water Injection with Particles

Study on Mechanism and Regularity of Rock Breaking by Pulsed Water Injection with Particles

Progress in modelling and simulation of the machining process – part II: Mesh-free modelling and simulation

An investigation of compliant contact force models applied for analysis of simultaneous, multi-zone impacts of particles

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