Contact and frictional behavior of rough surfaces using molecular dynamics combined with fractal theory

Jen-Fin Lin, Te Hua Fang, Cheng Da Wu, Ko Han Houng

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The microcontact behavior of a copper asperity on a diamond plate was carried out using a molecular dynamics (MD) simulation with the parallel algorithms atom decomposition method. The results show that the dynamic frictional force had an oscillated behavior when the flat diamond plane slipped through the copper asperity. The contact load, contact area, dynamic frictional force, and dynamic frictional coefficient increased as the contact interference increased at a constant loading velocity. The dynamic frictional force and dynamic frictional coefficient increased as the sliding velocity increased. Furthermore, the microcontact behavior can be evaluated between a rigid smooth flat plane and a rigid smooth hemisphere to a deformable rough flat plane by combining the deformed behavior of the asperity obtained from MD results and the fractal and statistic parameters.

Original languageEnglish
Pages (from-to)480-484
Number of pages5
JournalComputational Materials Science
Volume40
Issue number4
DOIs
Publication statusPublished - 2007 Oct 1

Fingerprint

Rough Surface
Molecular Dynamics
Fractals
Molecular dynamics
Fractal
fractals
Contact
molecular dynamics
Diamond
Strombus or kite or diamond
Copper
Diamonds
diamonds
contact loads
copper
Hemisphere
Coefficient
coefficients
Decomposition Method
hemispheres

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

Cite this

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abstract = "The microcontact behavior of a copper asperity on a diamond plate was carried out using a molecular dynamics (MD) simulation with the parallel algorithms atom decomposition method. The results show that the dynamic frictional force had an oscillated behavior when the flat diamond plane slipped through the copper asperity. The contact load, contact area, dynamic frictional force, and dynamic frictional coefficient increased as the contact interference increased at a constant loading velocity. The dynamic frictional force and dynamic frictional coefficient increased as the sliding velocity increased. Furthermore, the microcontact behavior can be evaluated between a rigid smooth flat plane and a rigid smooth hemisphere to a deformable rough flat plane by combining the deformed behavior of the asperity obtained from MD results and the fractal and statistic parameters.",
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Contact and frictional behavior of rough surfaces using molecular dynamics combined with fractal theory. / Lin, Jen-Fin; Fang, Te Hua; Wu, Cheng Da; Houng, Ko Han.

In: Computational Materials Science, Vol. 40, No. 4, 01.10.2007, p. 480-484.

Research output: Contribution to journalArticle

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