Modeling and simulation of grinding wheel by discrete element method and experimental validation

The grinding mechanism is the base of developing new precision machining technology, especially for brittle materials including ceramics. In previous work, many results were gained from single grit cutting model in which a grit is in contact continuously with a workpiece, similar to the indentation or scratching process, to model the material remove in grinding processing. However, the abrasives are distributed randomly on the surface of the grinding wheel, and they will impact the workpiece periodically in the grinding process. In this study, the discrete element method was introduced to simulate the mechanics behavior of [Formula: see text] ceramic. The model was validated by simulating indentation test. Both linear scratching test and pendulum scratching test have been simulated in this paper to model the grinding process. The cracks initiation and propagation were also investigated. This study has demonstrated that we should pay close attention to pendulum scratching test to explore the grinding mechanism, and concentrate on cracks initiation and propagation.

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Future of the discrete element method in the modelling of grinding wheels

Engineering Computations ◽

10.1108/ec-11-2017-0450 ◽

2018 ◽

Vol 35 (6) ◽

pp. 2255-2271 ◽

Cited By ~ 2

Author(s):

Juan Luis Osa ◽

Naiara Ortega ◽

Gorka Vidal ◽

Borja Fernandez-Gauna ◽

Asier Carballo ◽

...

Keyword(s):

Discrete Element Method ◽

Discrete Element ◽

Grinding Wheel ◽

Grinding Wheels ◽

Content Type ◽

Topography Model ◽

New Applications ◽

Wheel Material ◽

Granular Morphology ◽

Element Method

Purpose The granular structure of a grinding wheel determines its performance remarkably when grinding. Nowadays, grinding wheels are man-made porous conglomerates of hard abrasive grains bonded with a binder. As an engineered material, it would be interesting to foresee the behaviour of the wheel, but it is hindered under its complex heterogeneous nature. Recently, some models based on the discrete element method (DEM) have been presented to model the grinding wheel. This paper aims to identify and propose a framework that must comply with such models and to identify new applications for DEM models in grinding. Design/methodology/approach First, the characteristics of the grinding wheel are described. In this way, the framework of DEM models of a grinding wheel material is developed, reproducing both the granular morphology and stiffness. Findings The paper asserts a promising future that provides the DEM in the modelling of grinding. Originality/value The potential of DEM in grinding is analysed, proposing new applications. It can be used as topography model, which can also model the stiffness. In addition, DEM opens a new interesting research line: the modelling of the grit breakout. It draws up the development of essential dressing and wear models.

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Modeling and Simulation of Modern Industrial Screens using Discrete Element Method

International Journal of Engineering ◽

10.5829/idosi.ije.2013.26.08b.14 ◽

2013 ◽

Vol 26 (8 (B)) ◽

Author(s):

A. Farzanegan

Keyword(s):

Discrete Element Method ◽

Modeling And Simulation ◽

Discrete Element ◽

Element Method

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