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Peridynamics
analysis of the nanoscale friction and wear properties of
amorphous carbon thin films
Sayna Ebrahimi, David J. Steigmann and Kyriakos Komvopoulos |
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Vol. 10 (2015), No. 5, 559–572
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DOI: 10.2140/jomms.2015.10.559
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Abstract |
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State-based peridynamics theory was used to study the nanoscale friction and wear behavior of thin films of amorphous carbon used as protective overcoats in hard-disk drives. Numerical results of the coefficient of friction and wear depth are shown to be in good agreement with published experimental results. Although long-range forces are not considered in the analysis, the results indicate that the present approach yields fairly accurate estimates of the coefficient of friction and wear depth for films of thickness larger than 10 nm and a grid size of 1.6 nm. The results of this study demonstrate that peridynamics theory can be used to analyze various nanoscale friction and wear phenomena without being limited by the excessive computational time and convergence difficulties encountered with traditional numerical techniques, such as the finite element method. |
Keywords
state-based peridynamics, friction, wear, thin films
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Milestones
Received: 3 October 2014
Revised: 2 June 2015
Accepted: 19 June 2015
Published: 6 November 2015
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Authors |
| Sayna Ebrahimi | |
| Department of Mechanical
Engineering University of California Berkeley, CA 94720-1740 United States |
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| David J. Steigmann | |
| Department of Mechanical
Engineering University of California, Berkeley 6133 Etcheverry Hall Berkeley, CA 94720-1740 United States |
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| Kyriakos Komvopoulos | |
| Department of Mechanical
Engineering University of California, Berkeley 5143 Etcheverry Hall Berkeley, CA 94720-1740 United States |
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