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rabinowitsch fluids

Journal of Mechanics (1)

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Linear Stability Analysis of Journal Bearings Lubricated With a Non-Newtonian Rabinowitsch Fluid
J. R. Lin, T. C. Hung, C. H. Lin
Journal:

Journal of Mechanics / Volume 35 / Issue 1 / February 2019

Published online by Cambridge University Press:

28 June 2017, pp. 107-112

Print publication:

February 2019
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The linear stability boundaries of journal bearings lubricated with a non-Newtonian fluid have been investigated in this paper. Based on the Rabinowitsch fluid model, a non-Newtonian dynamic Reynolds equation for journal bearings is derived and then applied to analyze the linear dynamic characteristics of short journal bearings. Comparing with the Newtonian-lubricant case, the non-Newtonian rheology of dilatant lubricants provides a larger area of linearly stable region. However, the non-Newtonian properties of pseudo-plastic lubricants results in a reverse trend for the short journal bearing.