Linear Stability Analysis of Journal Bearings Lubricated With a Non-Newtonian Rabinowitsch Fluid

Author:

Lin J. R.,Hung T. C.,Lin C. H.

Abstract

AbstractThe 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.

Publisher

Oxford University Press (OUP)

Subject

Applied Mathematics,Mechanical Engineering,Condensed Matter Physics

Cited by 8 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Discussion on dynamic characteristics of long journal bearings considering surface roughness;Advances in Mechanical Engineering;2022-11

2. Threshold speed of short journal bearings considering the non-Gaussian longitudinal surface roughness;Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology;2022-01-24

3. Performance of finite bearing under the combined influence of turbulent and non-Newtonian lubrication;Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology;2021-02-15

4. Numerical and Experimental Studies on Performance Enhancement of Journal Bearings Using Nanoparticles Based Lubricants;Archives of Computational Methods in Engineering;2021-02-05

5. A Derivation of Stiffness and Damping Coefficients for Short Hydrodynamic Journal Bearings with Pseudo-Plastic Lubricants;Journal of Mechanics;2020-10-14

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