Surface Roughness and Magnetic Effect of Magnetized Journal Bearings Lubricated with Ferrofluid

Abstract:

This study investigated the combined influence of stochastic surface roughness patterns and a magnetic field produced by an infinitely long wire on the distribution of hydrodynamic pressure in journal bearings lubricated with ferrofluids. According to our results, the magnetic field can raise the dimensionless pressure, improve the dimensionless load capacity and reduce the modified friction coefficient, especially at high eccentricity ratio. However, these bearing Characteristics are also influenced by surface roughness pattern depend on the length to diameter ratio λ, and the critical value of λ equal to 0.6, 0.95 and 1.8 in this study.

• Periodical: Key Engineering Materials (Volume 642)
• Pages: 242-247
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.642.242
• Online since: April 2015
• Authors: Tze Chi Hsu, Jing Hong Chen*, Tsu Liang Chou, Hsiu Lu Chiang
• Keywords: Ferrofluid, Infinitely Long Wire, Magnetic Field, Stochastic Surface Roughness

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