Paper Titles

Preface, Committees

Assessment of Tool Life and Wear Intensity of CBN Tools in Hard Cutting
p.1

Molecular Dynamics Study of Abrasive Grain Morphology and Orientation in Nanometric Grinding
p.7

Cutting Force during Grinding Determined by Regression Analysis and Genetic Algorithms
p.13

Modelling and Analysis of Relationship between Cutting Parameters Surface Roughness and Cutting Forces Using Response Surface Methodology when Hard Turning with Coated Ceramic Inserts
p.19

Using Advanced CAM System in Modern Machining
p.27

Identification and Analysis of Residual Stresses in the Axisymmetric Workpiece Existing before and after Machining
p.33

Identification of the Minimal Thickness of Cutting Layer Based on the Acoustic Emission Signal
p.39

Morphology of the Chip Formation at Orthogonal High Speed Milling of AISI H13
p.45

HomeKey Engineering MaterialsKey Engineering Materials Vol. 686Molecular Dynamics Study of Abrasive Grain...

Molecular Dynamics Study of Abrasive Grain Morphology and Orientation in Nanometric Grinding

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Abstract:

A simulation of the material removal by a single abrasive grain in nanometric grinding is presented in this paper. Molecular Dynamics method is used for modeling the diamond grain and the copper workpiece. The Morse potential function is used to simulate the interactions between the atoms involved in the procedure. The abrasive grain follows a trajectory with decreasing depth of cut within the workpiece to simulate the interaction of the grain with the workpiece. The influence of the grain shape, being either square or rectangular, and of the orientation of the grain, where the grain has rake angle 10^o, -10^o and-20^o, are studied. From the analysis it is apparent that both grain morphology and orientation play a significant role on chip formation, grinding forces and temperatures. With the appropriate modifications, the proposed model can be used for the simulation of various nanomachining processes and operations, in which continuum mechanics cannot be applied or experimental techniques are subjected to limitations.

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Precision Machining VIII

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Periodical:

Key Engineering Materials (Volume 686)

Pages:

7-12

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.686.7

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Online since:

February 2016

Authors:

Angelos P. Markopoulos*, Nikolaos E. Karkalos, Dimitrios E. Manolakos

Keywords:

Abrasive Grain, Grinding, Grinding Forces, Molecular Dynamics, Nanocutting, Rake Angle

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* - Corresponding Author

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