The CEB elastic-plastic contact of nominally flat rough surfaces based on conservation of volume during plastic flow was forwarded by Chang, Etsion and Bogy [1]. The CEB model presents contact force as integral functions of the mean plane separation. A closed-form approximate function providing an explicit relation between contact force and surface parameters and mean plane separation would be desirable for several reasons. First, it facilitates implementation of the contact relation in the dynamics of mechanical system and, second, it provides expediency and efficiency for calculation of contact force when repetitive computation of the contact force is required. This paper presents closed-form approximate equations expressing contact force explicitly as a function of critical interference and mean plane separation. Two alternative approximate equations are provided. The first equation, in simpler form, is shown to yield error within six percent (6%) of the exact integral equations. The second form of approximate equations provides contact force accuracy within 0.1 percent of the original integral equations.
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ASME/STLE 2007 International Joint Tribology Conference
October 22–24, 2007
San Diego, California, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4810-8
PROCEEDINGS PAPER
Closure Equations for CEB Elastic-Plastic Contact Available to Purchase
A. Sepehri,
A. Sepehri
Southern Illinois University - Carbondale, Carbondale, IL
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K. Farhang
K. Farhang
Southern Illinois University - Carbondale, Carbondale, IL
Search for other works by this author on:
A. Sepehri
Southern Illinois University - Carbondale, Carbondale, IL
K. Farhang
Southern Illinois University - Carbondale, Carbondale, IL
Paper No:
IJTC2007-44298, pp. 459-461; 3 pages
Published Online:
March 23, 2009
Citation
Sepehri, A, & Farhang, K. "Closure Equations for CEB Elastic-Plastic Contact." Proceedings of the ASME/STLE 2007 International Joint Tribology Conference. ASME/STLE 2007 International Joint Tribology Conference, Parts A and B. San Diego, California, USA. October 22–24, 2007. pp. 459-461. ASME. https://doi.org/10.1115/IJTC2007-44298
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