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Effects of Lattice Orientation and Size on Molecular Asperity Contact Models

[+] Author Affiliations
J. Robert Polchow, Wei Huang, Robert L. Jackson

Auburn University, Auburn, AL

Paper No. IJTC2009-15109, pp. 313-315; 3 pages
doi:10.1115/IJTC2009-15109
From:
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME

abstract

Surface asperities can range widely in size. Therefore it is important to characterize the effect of size and scale on the contact mechanics. This work presents a molecular model of asperity contact in order to characterize small scale asperity contact. The effects of lattice orientation and radius (number of particles) are examined. It appears that lattice orientation has a noticeable effect, but nominally may not be important in the contact of asperities and rough surfaces. The size appears to be important until a certain minimum size is achieved.

Copyright © 2009 by ASME

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