Proceedings of International Conference on Leading Edge Manufacturing in 21st century : LEM21
Online ISSN : 2424-3086
ISSN-L : 2424-3086
2015.8
Session ID : 2307
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2307 Molecular Dynamics Simulation of Relationship between Friction Anisotropy and Atomic-scale Stick-slip Phenomenon
Jun SHIMIZULibo ZHOUTeppei ONUKIHirotaka OJIMATakeyuki YAMAMOTO
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Abstract
A Molecular dynamics simulation was carried out to clarify the influence of the atomic-scale stick-slip phenomenon on the energy dissipation and friction anisotropy. In the simulation, the sliding processes on an ideal Cu{100} surface by a carbon atom slider were examined by focusing on the two representative sliding directions, such as <100> and <110> using a model in which the cantilever effect of the atomic force microscope was taken into account. As a result, it is found that the dissipated mechanical energy thorough the atomic-scale stick-slip phenomenon can be calculated from the stored elastic energy using the amplitudes of stick-slip force signals. It is also found that the friction coefficient in the sliding in <100> direction becomes higher than that in <110> direction due to the remarkable two-dimensional stick-slip phenomenon.
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© 2015 The Japan Society of Mechanical Engineers
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