Molecular dynamics study on friction due to ploughing and adhesion in nanometric scratching process

Peng Zhe Zhu; Yuan Zhong Hu; Tian Bao Ma; Hui Wang

doi:10.1007/s11249-010-9681-6

Molecular dynamics study on friction due to ploughing and adhesion in nanometric scratching process

Peng Zhe Zhu, Yuan Zhong Hu^*, Tian Bao Ma, Hui Wang

^*Corresponding author for this work

Tsinghua University

Research output: Contribution to journal › Article › peer-review

102 Citations (Scopus)

Abstract

In this study, three-dimensional MD simulations are carried out to study the nanometric scratching process. The ploughing friction coefficient and the adhesion friction coefficient are distinguished for the first time using MD simulations. The contribution of chip to friction coefficient is also evaluated. The simulation results show that the macroscale theory can qualitatively evaluate the ploughing friction coefficient, but it slightly overestimates the ploughing friction coefficient on the nanoscale for the scratching depths studied. It is found that the adhesion friction coefficient is independent of the scratching depth as predicted by macroscale theory. It is also found that the contribution of chip to friction coefficient is independent of the scratching depth and cannot be neglected on the nanoscale.

Original language	English
Pages (from-to)	41-46
Number of pages	6
Journal	Tribology Letters
Volume	41
Issue number	1
DOIs	https://doi.org/10.1007/s11249-010-9681-6
Publication status	Published - Jan 2011
Externally published	Yes

Keywords

Adhesion friction
Molecular dynamics
Ploughing friction
Scratching

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10.1007/s11249-010-9681-6

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title = "Molecular dynamics study on friction due to ploughing and adhesion in nanometric scratching process",

abstract = "In this study, three-dimensional MD simulations are carried out to study the nanometric scratching process. The ploughing friction coefficient and the adhesion friction coefficient are distinguished for the first time using MD simulations. The contribution of chip to friction coefficient is also evaluated. The simulation results show that the macroscale theory can qualitatively evaluate the ploughing friction coefficient, but it slightly overestimates the ploughing friction coefficient on the nanoscale for the scratching depths studied. It is found that the adhesion friction coefficient is independent of the scratching depth as predicted by macroscale theory. It is also found that the contribution of chip to friction coefficient is independent of the scratching depth and cannot be neglected on the nanoscale.",

keywords = "Adhesion friction, Molecular dynamics, Ploughing friction, Scratching",

author = "Zhu, {Peng Zhe} and Hu, {Yuan Zhong} and Ma, {Tian Bao} and Hui Wang",

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AU - Zhu, Peng Zhe

AU - Hu, Yuan Zhong

AU - Ma, Tian Bao

AU - Wang, Hui

PY - 2011/1

Y1 - 2011/1

N2 - In this study, three-dimensional MD simulations are carried out to study the nanometric scratching process. The ploughing friction coefficient and the adhesion friction coefficient are distinguished for the first time using MD simulations. The contribution of chip to friction coefficient is also evaluated. The simulation results show that the macroscale theory can qualitatively evaluate the ploughing friction coefficient, but it slightly overestimates the ploughing friction coefficient on the nanoscale for the scratching depths studied. It is found that the adhesion friction coefficient is independent of the scratching depth as predicted by macroscale theory. It is also found that the contribution of chip to friction coefficient is independent of the scratching depth and cannot be neglected on the nanoscale.

AB - In this study, three-dimensional MD simulations are carried out to study the nanometric scratching process. The ploughing friction coefficient and the adhesion friction coefficient are distinguished for the first time using MD simulations. The contribution of chip to friction coefficient is also evaluated. The simulation results show that the macroscale theory can qualitatively evaluate the ploughing friction coefficient, but it slightly overestimates the ploughing friction coefficient on the nanoscale for the scratching depths studied. It is found that the adhesion friction coefficient is independent of the scratching depth as predicted by macroscale theory. It is also found that the contribution of chip to friction coefficient is independent of the scratching depth and cannot be neglected on the nanoscale.

KW - Adhesion friction

KW - Molecular dynamics

KW - Ploughing friction

KW - Scratching

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Molecular dynamics study on friction due to ploughing and adhesion in nanometric scratching process

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Keywords

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