Experimental Research on the Determination of the Coefficient of Sliding Wear under Iron Ore Handling Conditions

Chen, G.; Liu, Y.; Lodewijks, Gabriël; Schott, Dingena L.

doi:10.24874/ti.2017.39.03.13

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…For the average wear depth and wear width, the numerical results show 36% and 34% discrepancy, respectively. The difference can be explained by four factors [ 31 ]: wear volume calculation in model and experiment, wear mechanism and number of samples from experiments and wear of particle tip in the experiment. First, the calculation of the wear volume is different.…”

Section: Verification Of Numerical Resultsmentioning

confidence: 99%

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Pin-on-Disc Modelling with Mesh Deformation Using Discrete Element Method

2022

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The pin-on-disc test is a standard sliding wear test used to analyse sliding properties, including wear contour and wear volume. In this study, long-term laboratory test performance is compared with a short-term numerical model. A discrete element method (DEM) approach combined with an Archard wear model and a deformable geometry technique is used. The effect of mesh size on wear results is evaluated, and a scaling factor is defined to relate the number of revolutions between the experiment and the numerical model. The simulation results indicate that the mesh size of the disc has a significant effect on the wear contour. The wear depth and wear width follow a normal distribution after experiencing a run-in phase, while the wear volume has a quadratic relation with the number of revolutions. For the studied material combination, the calibration of the wear coefficient shows that the wear volume of the pin-on-disc test accurately matches the simulation results for a minimum of eight revolutions with a wear coefficient lower than 2 × 10−11𝑃a−1.

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Section: Verification Of Numerical Resultsmentioning

confidence: 99%

“… Wear contour extraction. ( a ) An iron ore with a spherical head; ( b ) measuring of the cross-section [ 31 ] and ( c ) three wear contours based on the measurement after test. …”

Section: Figurementioning

confidence: 99%

Pin-on-Disc Modelling with Mesh Deformation Using Discrete Element Method

2022

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“…Where, H is the surface hardness of the contact material, and K=10 -11 according to the experimental data of Chen (Chen et al 2017). Wall wear thickness h can be calculated by:…”

Section: Discrete Phase Modelmentioning

confidence: 99%

Study on the Impact Wear Characteristics of Catalyst Particles at 90° Elbow via CFD-DEM Coupling Method

Liu

Zhou

Gao

et al. 2022

JAFM

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In the process of petrochemical production, the catalyst particles in the hydraulic conveying pipeline often cause wear failure accidents due to collisions with wall. Compared with spherical particles, non-spherical particles' trajectory would be different due to its geometric shape, and thereby affecting the flow wear characteristics. In this paper, the shape of catalyst particle model with real aspect ratio was constructed by using multi-cluster method, and a CFD-DEM coupling method was adopted by considering the interaction between particle-particle and particle-wall. The study focuses on the effect of particle shape, radius of curvature and angle of bend in terms of the wear characteristics of liquid-solid two-phase flow. The results indicate that with the increase of the particle aspect ratio, the wear rate and the impact density of particles decrease while the impact velocity increases, the wear area of the elbow mainly distributes in the middle part of the outer wall, and its maximum position appears between 78° and 90° in polar coordinates; With the increase of pipe's curvature radius, the main wear area changes due to the direct collision and the sliding friction of the particles along the pipe wall, and its maximum wear rate shows a downward trend due to the reinforce of buffering effect; With the decrease of bending angle, The main wear area decrease because of the changes in particle flow patterns and it is mainly located in the center of the outer wall.

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