Rough Air-Soft Elastohydrodynamic Lubrication

Abstract:

This paper presents the effects of rough surface air-soft elastohydrodynamic lubrication (EHL) of rollers for soft material under the effect of air molecular slip. The time independent modified Reynolds equation and elasticity equation were solved numerically using finite different method, Newton-Raphson method and multigrid multilevel methods were used to obtain the film pressure profiles and film thickness in the contact region. The effects of amplitude of surface roughness, modulus of elasticity and air inlet temperature are examined. The simulation results showed surface roughness has effect on film thickness but it little effect to air film pressure. When the amplitude of surface roughness and modulus of elasticity increased, the air film thickness decreased but air film pressure increased. However, the air inlet temperature increased when the air film thickness increased.

• Periodical: Applied Mechanics and Materials (Volume 420)
• Pages: 30-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.420.30
• Online since: September 2013
• Authors: Khanittha Wongseedakaew, Jesda Panichakorn
• Keywords: Air Lubrication, Multigrid Method, Rough Surface, Soft Material

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