Numerical study of the effect of lip surface roughness on lubrication of radial shaft seals with a simple sinusoidal model

Hirotaka Mizuta, Joichi Sugimura

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3 Citations (Scopus)


The effect of lip surface microtopography on lubrication of radial shaft seals is studied numerically. Numerical analysis of hydrodynamic flow at the lip is conducted with a simple sinusoidal wave as a lip surface asperity model. In order to understand the effects of lip surface microtopography on micro EHL, amplitude, wavelength, curvature and asperity ratio on film formation are investigated. It is found that the wavelength, the curvature and the aspect ratio significantly affect film formation and the coefficient of friction, and that coefficient of friction is influenced not only by minimum film thickness but by the average film thickness.

Original languageEnglish
Pages (from-to)104-110
Number of pages7
JournalTribology Online
Issue number1
Publication statusPublished - May 22 2013


All Science Journal Classification (ASJC) codes

  • Surfaces, Coatings and Films

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