Numerical simulation of single particle acceleration process by SPH coupled FEM for abrasive waterjet cutting

Feng, Yihan; Wang, Jianming; Liu, Feihong

doi:10.1007/s00170-011-3495-z

Cited by 32 publications

(20 citation statements)

References 20 publications

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“…In hydromechanics, the following equations were often used to describe the motion and status of the fluid when the hydrodynamics problems were solved by using the SPH method [1,[25][26][27].…”

Section: Methodsmentioning

confidence: 99%

“…Liu et al [1] and Jiang et al [24] used the SPH method to establish a pure continuous water jet and a discontinuous jet to study the performance of water jet cutting rock, respectively. Feng et al [25] adopted the SPH-coupled FEM, in which SPH particles were used to model the highspeed water jet to adapt their extremely large deformation and FEM was applied to model the discrete abrasive particle, cutting head, and workpiece. However, only the acceleration process of a single abrasive particle was studied using this method.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Liu

Tang²,

Geng

et al. 2019

Shock and Vibration

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It has been found that the impact performance of water jets can be changed by its properties, which include pressure, additive, and mode of jet. Thus, an abrasive water jet (AWJ) has been developed as a new method. However, there is little research on the effect of abrasive concentration on the impact performance of abrasive jets. Thus, the SPH method is used to establish an abrasive water jet crushing concrete model to study the effect of abrasive concentration on the impact force, concrete internal energy, abrasive particle distribution, crushing depth, and damage and crushing efficiencies under different concrete compressive strengths and abrasive densities. The results indicate that there is little effect of the abrasive concentration on the peak impact force under different compressive strengths and abrasive densities, while the mean impact force tends to increase linearly with the abrasive concentration. The internal energy of the concrete increases stepwise with the abrasive concentration under different compressive strengths and abrasive densities. The concentration of 10%∼20% is the rapid increasing stage. The crushing depth and damage efficiencies are all maximum at a concentration of 20% under different compressive strengths and abrasive densities. After the concrete was impacted by the water from the water jet, it is divided into rebounding particles and intrusive particles. The more the intrusive particles, the easier the concrete to be crushed and damaged.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Liu

Tang²,

Geng

et al. 2019

Shock and Vibration

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“…The common methods used in the past for the numerical simulation of the rock blasting process are mesh-based methods (such as the Finite Difference Method (FDM) and the Finite Element Method (FEM)) and the discrete particle methods (such as the Discrete Element Method (DEM) and hybrid FEM-DEM methods) [13][14][15][16][17]. Continuum-based methods often fail to accurately simulate fracture, fragmentation and large deformation or flow during a blasting process [18][19][20]. For a discontinuous model, the rock mass is represented by an assembly of jointed elements and a fracture is initiated when the stress in the joint between two elements exceeds a critical value.…”

Section: Introductionmentioning

confidence: 99%

“…Mesh free methods are usually more expensive in computation time than FEM. Thus, several mixed FEM and mesh free methods have been proposed to use the advantages of each method [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the complete rock blasting response by SPH–DAM–FEM approach

Chen

et al. 2015

Simulation Modelling Practice and Theory

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“…Grid connection between these particles is not necessary. The continuous form of kernel approximation f(x) can be written in discretized form of a summation of the neighboring particles as follows [11]:…”

Section: Theory Model Of Sphmentioning

confidence: 99%

CFD simulation of micro-particle trapping under water tweezers

Cheng

Niu

et al. 2014

Adv. Manuf.

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In early research, capture and manipulation of particles were mainly achieved by means of light, electricity and plasma in micro-fabrication and micro-assembly. A new method is proposed using micro-water jet to form water tweezers to capture solid particles and implement position control of micro-particles. This paper analyzes the basic principle of water tweezers, and the discrete element method and smoothed particle hydrodynamics method are employed to establish a solid-liquid coupling model used in analyzing the trapping mechanism. A flow field model is set up to simulate dynamic characteristic of water tweezers based on computational fluid dynamics (CFD). Selection of boundary conditions, initial guess, solver control and convergence strategies of the model are discussed. Velocity and pressure of streamline are predicted and discussed under certain input conditions. Simulation results demonstrate that it is an efficiently theoretical method to eventually trap solid particles by water tweezers.

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Numerical simulation of single particle acceleration process by SPH coupled FEM for abrasive waterjet cutting

Cited by 32 publications

References 20 publications

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Effect of Abrasive Concentration on Impact Performance of Abrasive Water Jet Crushing Concrete

Numerical simulation of the complete rock blasting response by SPH–DAM–FEM approach

CFD simulation of micro-particle trapping under water tweezers

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