The phenomena that occur when an elliptical steel body impacts a stationary steel plate with surface asperities are discussed through isothermal Newtonian numerical analysis using sinusoidal roughness. The ridges of the surface asperities produce large local pressures, especially at a large ellipticity ratio, when the surfaces are approaching each other under the applied load. The values of the local pressures are larger when the ridges are along the major axis than when the ridges are along the minor axis. Furthermore, as the loading speed increases, the pressure increases. As a result, the microgrooves are produced in the ridges and the horseshoe-shaped constrictions are formed at the ridges located around the contact edge.
Pressure Increase in Elliptical Impact Elastohydrodynamic Lubrication Contacts With Longitudinal Asperities
Contributed by the Tribology Division of ASME for publication in the Journal of Tribology. Manuscript received May 28, 2012; final manuscript received September 24, 2012; published online December 21, 2012. Assoc. Editor: Dong Zhu.
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Kaneta, M., Guo, F., Wang, J., Krupka, I., and Hartl, M. (December 21, 2012). "Pressure Increase in Elliptical Impact Elastohydrodynamic Lubrication Contacts With Longitudinal Asperities." ASME. J. Tribol. January 2013; 135(1): 011503. https://doi.org/10.1115/1.4007808
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