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An Improved Fractal Contact Model With Special Emphasis on Surface Roughness, Elastoplastic Transition Deformation Zone, and Hardness Effects of Coating Film

[+] Author Affiliations
Jeng-Haur Horng, Yi-Jiu Chan

National Formosa University, Yunlin, Taiwan

Chang Sheng

Greencure Technology Company, Ltd.

Joseph Yu

Progressive Optoelectronics Technology Company, Ltd.

Paper No. WTC2005-63418, pp. 267-268; 2 pages
doi:10.1115/WTC2005-63418
From:
  • World Tribology Congress III
  • World Tribology Congress III, Volume 1
  • Washington, D.C., USA, September 12–16, 2005
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4201-0 | eISBN: 0-7918-3767-X
  • Copyright © 2005 by ASME

abstract

In this work, fractal characterization of surface topography is applied to the study of contact mechanics between two coating film rough surfaces. Incorporating with MB model, the occurrence of elastic-plastic transition regime and the hardness effect of coating film are considered in the new contact model. Results show that the real contact areas predicted by this new model are larger than those predicted by MB model. For low fractal roughness parameter and fractal dimension of 1.5, up to 19% of difference can be found between the results from the new model and old model.

Copyright © 2005 by ASME

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