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TECHNICAL PAPERS

A Three-Dimensional Thermal-Mechanical Asperity Contact Model for Two Nominally Flat Surfaces in Contact

[+] Author and Article Information
Geng Liu, Qian Wang, Shuangbiao Liu

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208

J. Tribol 123(3), 595-602 (Jul 10, 2000) (8 pages) doi:10.1115/1.1308044 History: Received February 07, 2000; Revised July 10, 2000
Copyright © 2001 by ASME
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References

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Figures

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An elastic body in contact, domain designation, and the coordinate system
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Rough surfaces and an asperity in thermoelastic contact. (a) A more isotropic surface (λx=39.3 μm,λy=62.99 μm,σ=0.25 μm). (b) A more longitudinal surface (λx=23.62 μm,λy>9λx,σ=0.43 μm). (c) An asperity in thermoelastic contact.
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The domain, ABCDEFGH, for influence coefficient computation and the domain for surface contact computation
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Results comparisons. (a) Isotropic surface, with Lee and Ren. (b) Longitudinal surface roughness, with Lee and Ren. (c) Compared with the 2D model.
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Deformed surface and contact pressure distribution (isotropic asperities, isothermal solution). (a) Deformed surface. (b) Pressure distribution.
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Deformed surface and contact pressure distribution (isotropic asperities, thermoelastic solution). (a) Deformed surface, Qf=0.1 m/s. (b) Pressure distribution, Qf=0.1 m/s. (c) Temperature distribution, Qf=0.1 m/s. (d) Deformed surface, Qf=0.13 m/s. (e) Pressure distribution, Qf=0.13 m/s. (f ) Temperature distribution, Qf=0.13 m/s.
Grahic Jump Location
The influence of frictional heat on the contact performance. (a) Pressure-average gap relation. (b) Contact area-pressure relation.

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