Simulation of Grinding Surface Creation – A Single Grit Approach

Chen, Xun; Öpöz, Tahsin Tecelli

doi:10.4028/www.scientific.net/amr.126-128.23

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…18 Grinding force is an important response, which reflects the chip formation and surface integrity. 19 During the grinding process, grit makes physical contact with the workpiece and slides over the workpiece. This rubbing action increases the frictional force and enhances the grinding temperature at the grinding interface.…”

Section: Introductionmentioning

confidence: 99%

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB₂/ZrB₂ in situ composite

Mahamani

2019

Journal of Micromanufacturing

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Machining and conversion of aluminum matrix composites into a desired shape with accuracy has been a challenge for many years. Grinding is a process aimed at achieving better-quality surface finish along with reasonable rate of material removal. The present article describes the influence of operating parameters on the tangential grinding force, size effect, and surface integrity in the grinding of in situ aluminum matrix composites using various grinding wheels. The material removal mechanism of the in situ composite under different grinding conditions is established. Experimental results show that the grinding operating parameters have significant influence on the tangential grinding force, size effect, surface integrity, and material removal. Scanning electron and atomic force microscopy findings indicate presence of numerous surface defects on the grounded surface under all grinding conditions. Diamond grinding wheel outperformed the CBN and Al2O3 wheels by requiring lower grinding force and specific grinding energy and generating lower surface defects. Surface defects, including grinding striation, delamination, and ridge formation are unavoidable under all machining conditions. However, the aforementioned surface defects indicate the ductile mode of material removal at all experimental conditions. Undeformed chip thickness under various grinding conditions plays a significant role in material removal and surface generation. These findings help to understand the mechanism of material removal in machining of in situ composites under various grinding conditions, which helps in attaining the economic production rate without compromising the surface integrity.

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Section: Introductionmentioning

confidence: 99%

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB₂/ZrB₂ in situ composite

Mahamani

2019

Journal of Micromanufacturing

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“…For metal, alloy and ceramics, the grinding researches are mainly about material removal and surface integrity from a microcosmic view. Chen and Öpöz presented an investigation of grinding material removal mechanism using finite element (FE) method [14]. In this research, material removal mechanism of grinding, namely rubbing, ploughing and cutting, was discussed with the variation friction coefficient.…”

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confidence: 99%

Investigating the Sanding Process of Medium-Density Fiberboard and Korean Pine for Material Removal and Surface Creation

et al. 2018

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As an important fine machining method, sanding operation is widely used in most engineered materials. In wood sanding, high material removal rate and surface quality are expected. Clarifying the material deformation in the sanding process is the key to improving sanding efficiency. In this study, a single grit scratching method is used to investigate the material removal and surface creation of medium-density fiberboard (MDF) and Korean Pine (Pinus koraiensis Sieb.et Zucc). It is found that there are some differences in the material deformation during scratching Korean Pine and MDF, compared with grinding metals. A mechanism based on the anatomical cavities absorbing effect was proposed to account for the differences. This mechanism helps to explain why tiny, or even no, "pile-up" (like swelling ridges created by the ploughing effect) occurs during scratching Korean Pine, especially in longitudinal direction. MDF as a densified wood composite presented more pile-up and the variation of pile-up ratio was investigated. The porosity and wood grain direction exert great influence on material removal and surface creation in wood sanding. At the rubbing stage, a new method was developed to confirm the elastic spring back effect both in MDF and Korean Pine scratching. The results obtained and the approaches used in this paper could provide insights into the material removal and surface creation research of other wood species and wood composites to finally improve sanding efficiency and surface quality.

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“…FEA software to predict the material removal in cases of grinding phenomena was used widely. [84,85].…”

Section: Materials Removal Studies Using Numerical Simulation Modelsmentioning

confidence: 99%

“…Opoz et al [96,84,97] carried out a series of studies to simulate the rubbing and ploughing phenomena. The simulation studies were carried out by considering the grain to be spherical in shape.…”

Section: Materials Removal Studies Using Numerical Simulation Modelsmentioning

confidence: 99%

“…18 Dynamic numerical model for material removal simulation84 composite abrasive disc, high-pressure regions are observed as shown inFigure 4.19 (a) and (b). The material removal depth obtained in these nodes are nullified using appropriate threshold limit at the end of each iteration 'j' such that abnormal material removal depth values are avoided.In between the two iterations, the mesh updation is done using the UMESHMOTION FORTRAN subroutine in 'General-static' and later the second iteration is restarted in Dynamic implicit, and the computational process is repeated.…”

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Effect of polishing disc compliance on the pressure distribution and material removal

Arunachalam¹

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Polishing is a key manufacturing process which has become inevitable in many industries such as shipbuilding, aerospace, automobile and bio-medical sectors. The compliant polishing tools (CPTs) are commonly used in industries, and there are different variants of the compliant polishing tools such as disc, wheel or belt types. Initially in this dissertation, in order to reduce the ambiguity involved in tool selection, two multi-criteria decision-making methods (MCDMs) methods are considered for a case study involving the selection of optimal polishing tools at different polishing stages. The CPTs are usually preferred to the rigid tools for the

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Simulation of Grinding Surface Creation – A Single Grit Approach

Cited by 10 publications

References 16 publications

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB₂/ZrB₂ in situ composite

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB₂/ZrB₂ in situ composite

Investigating the Sanding Process of Medium-Density Fiberboard and Korean Pine for Material Removal and Surface Creation

Effect of polishing disc compliance on the pressure distribution and material removal

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Simulation of Grinding Surface Creation – A Single Grit Approach

Cited by 10 publications

References 16 publications

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB2/ZrB2 in situ composite

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB2/ZrB2 in situ composite

Investigating the Sanding Process of Medium-Density Fiberboard and Korean Pine for Material Removal and Surface Creation

Effect of polishing disc compliance on the pressure distribution and material removal

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Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB₂/ZrB₂ in situ composite

Studies on the grinding force, size effect, surface texture, and mechanism of material removal in the grinding of AA6061-TiB₂/ZrB₂ in situ composite