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A Comparison of Elastic Contact Modeling Utilizing Statistical and Fractal Approaches

[+] Author Affiliations
Lior Kogut

University of Western Ontario, London, ON, Canada

Robert L. Jackson

Auburn University, Auburn, AL

Paper No. WTC2005-63238, pp. 225-226; 2 pages
doi:10.1115/WTC2005-63238
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

Statistical and fractal approaches for characterizing surface topography have been used widely in contact mechanics. In the present study, an attempt is made to compare between contact mechanics results obtained with statistical and fractal approaches to characterize surface topography. Specifically, a three-dimensional fractal surface was generated and statistical surface parameters were extracted using different sampling resolutions. Contact mechanics simulations were performed using the simulated fractal surface and statistical surfaces represented by the extracted statistical surface parameters. Purely elastic contact is studied in order to eliminate the influence of the individual asperity mechanical response on the obtained results. Therefore, differences in the simulated contact area and load can be related solely to the different approach employed for surface characterization. The influence of surface characterization approaches on the contact parameters and the resulting predictions is discussed in the contents of the presented results.

Copyright © 2005 by ASME

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