Numerical study on abrasive machining of rock using FDEM method

Wang, Fuzeng; Liu, Shuying; Ji, Kaixun

doi:10.1016/j.simpat.2020.102145

Cited by 19 publications

(8 citation statements)

References 43 publications

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“…It is obvious that the force increases with increasing feed speed. Such an increase of cutting forces has also been reported in FDEM simulation [24] and experimental analysis [25] for rock cutting. It could be attributed to the feed speed increasing and the volume of stone removal per unit time.…”

Section: Te Von Mises Stress Of the Circular Saw Blade In Thesupporting

confidence: 64%

“…Te fracture behavior and mechanical properties of the heterogeneous brittle rock are strain rate sensitive. Te results of numerous studies have shown that the strength of rock materials increased as the strain rate increased [24]. It was believed that the enhancement of dynamic strength was primarily caused by the materials inhomogeneity and inertia efects.…”

Section: Te Von Mises Stress Of the Circular Saw Blade In Thementioning

confidence: 99%

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A Numerical Model for Rock Cutting with Diamond Circular Saw Blade Based on Smoothed Particle Galerkin Method

Tian

Sang

Liu

2022

Mathematical Problems in Engineering

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A simulation approach was utilized to investigate the mechanics of cutting rock using the diamond circular saw blade in this paper. The smoothed particle Galerkin (SPG) method was used to numerically simulate three factors, including the dynamic mechanical behavior of the circular saw blade, the damage law of the circular saw blade, and the cutting force of the saw blade. The experimental comparison indicated that the SPG approach is feasible and accurate in the analysis and simulation of the rock cutting mechanism. The rock cutting is a process of material cyclic removal. The wear parts of the saw blade are most obviously manifested at the end of the saw segments. The water groove is also readily damaged in the alternating action, which has a significant impact on the service life of the saw blade. The effects of speed, cutting depth, and feed speed on the cutting force are discussed. The results reveal that these mentioned factors are important to the quality of rock cutting.

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Section: Te Von Mises Stress Of the Circular Saw Blade In Thesupporting

confidence: 64%

Section: Te Von Mises Stress Of the Circular Saw Blade In Thementioning

confidence: 99%

A Numerical Model for Rock Cutting with Diamond Circular Saw Blade Based on Smoothed Particle Galerkin Method

Tian

Sang

Liu

2022

Mathematical Problems in Engineering

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“…In the rock-breaking simulation of the disc cutter, the accurate simulation of the crack generation and propagation process is particularly important for revealing the rock-breaking mechanism. e existing simulation studies mostly use the development of the plastic zone instead of the rock crack range [7,[40][41][42][43][44], which cannot truly reflect the generation and propagation of radial and longitudinal cracks and the separation process between rock slices after the disc cutter is pressed into the rock. In this paper, the particle flow code (PFC) [45], which can better simulate the crack propagation of rock (body), is adopted.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Rock‐Breaking Process of TBM Disc Cutters and Response Mechanism of Rock Mass Based on Discrete Element

Zhang

Zhu

Du³

et al. 2022

Advances in Civil Engineering

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Rock-breaking efficiency of full-face rock tunnel boring machine (TBM) is closely related to the performance of the disc cutter and the characteristics of the rock mass. In the point of view of mesomechanics, the particle flow code (PFC) is used to establish a numerical model of the rock mass and the disc cutter, and the process of TBM disc cutter intrusion into the rock mass is analyzed. The dynamic response mechanism and crack evolution process of the rock mass under the action of the disc cutter are studied on the basis of micromechanics, and the relationship between the rock mass crack, penetration, and cutting force during the intrusion of the disc cutter is revealed. The sensitivity analysis is carried out on the confining pressure conditions and the influence parameters of the disc cutter spacing. The results show that the rock breaking by disc cutter undergoes the transformation characteristics of compaction, shearing, and tension failure modes, and the failure process of the rock mass is the joint action of tension and shear. In the whole process of rock breaking, the disc cutter has the phenomenon of repeated loading-unloading alternation and leaping rock breaking; after the penetration of the disc cutter reached 9.0 mm, penetration creaks begin to appear on the surface of the rock mass; the penetration was obviously reduced with the increase of confining pressure, and it is mainly the penetration cracks on the surface; after the disc cutter spacing reaches 100.0 mm, there is no penetration crack between the two disc cutters. The research conclusion can provide a reference for the disc cutter optimization design.

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“…Several studies have been conducted using conventional simulations such as finite element method (FEM), [19][20][21] discrete element method (DEM), and hybrid finite-discrete element method (FDEM). 22 On another hand, the analysis of parameters sensitivity, within a conception process, is run using Monte Carlo method which is a probabilistic method widely used in engineering. 23,24 Lohithaksha et al, 25 thanks to the GRA, optimized the cutting parameters during the end milling operation.…”

Section: Introductionmentioning

confidence: 99%

Assessment of cylindricity and roughness tolerances of holes drilled in marble using multiple regression and artificial intelligence

Abbassi

Trabelsi

Akrichi

et al. 2021

Advances in Mechanical Engineering

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The Calacatta-Carrara marble is widely used due to its excellent physico-chemical characteristics and attractive aspect. However, the sensitivity of this materiel, when performing delicate manufacturing operations, presents for the engineers a hard challenge to overcome. This issue is mainly encountered with complex shapes of parts, for which it is difficult to preserve surface integrity and avoid geometric defects. The paper aims at finding out optimal drilling parameters of cutting in the Calacatta-Carrara white marble material, in order to minimize the holes cylindricity (HC) and surface roughness (HR) using six controlled operating factors, namely, the rotation speed ( N), the feed speed ( F), the drill bit diameter (BD), the drill bit height (BH), the number of pecking cycles ( P), and the drilling depth (DD). The experimental design uses a [Formula: see text] fractional factorial plan that is replicated once for cost consideration. The optimization process, that is, minimum cylindricity and roughness tolerances, is carried out using the Gray Relational Analysis (GRA) technique. Numerical modeling of machining parameters is performed using Multi-Layer Perceptron Artificial Neural Network (MLP ANN) and Multiple Regression Model (MR) to predict surface quality. For the sake of completeness these two models were compared in terms of fitness and predictability. The models were assessed statistically using the correlation coefficient. Results showed that either solution predicts a roughness tolerance which is in good agreement with the test data (both R-sq.(adj.) and R-sq.(pred.) >94%). However, the holes cylindricity tolerance response was shown to be superior with MLP-ANN model (R-sq.(adj.) 50.64% and R-sq.(pred.) 48.67%). The GRA analysis shows that minimum cylindricity and roughness are met when N and F are set high, BD and BH low, P high and DD low.

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Numerical study on abrasive machining of rock using FDEM method

Cited by 19 publications

References 43 publications

A Numerical Model for Rock Cutting with Diamond Circular Saw Blade Based on Smoothed Particle Galerkin Method

A Numerical Model for Rock Cutting with Diamond Circular Saw Blade Based on Smoothed Particle Galerkin Method

Dynamic Rock‐Breaking Process of TBM Disc Cutters and Response Mechanism of Rock Mass Based on Discrete Element

Assessment of cylindricity and roughness tolerances of holes drilled in marble using multiple regression and artificial intelligence

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