非牛顿铁磁流体短轴颈轴承的润滑性能

IF 1.8 4区物理与天体物理 Q4 CHEMISTRY, PHYSICAL

Zeitschrift Fur Naturforschung Section A-A Journal of Physical Sciences Pub Date : 2013-02-20 DOI:10.5560/ZNA.2012-0114

J. Lin, Po-Jui Li, T. Hung

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引用次数: 13

摘要

本文研究了非牛顿铁磁流体作用下短轴颈轴承的润滑性能。基于Shliomis的铁磁流体模型和Stokes的微连续统理论，推导了考虑铁磁粒子旋转效应和非牛顿性质影响的二维修正Reynolds方程。作为一个应用，说明了短方位近似。与传统的非铁磁流体情况相比，具有磁场存在的铁磁流体短轴颈轴承具有更高的承载能力。与牛顿铁磁流体情况相比，耦合应力的非牛顿效应提高了载荷能力，并降低了摩擦参数。非牛顿耦合应力的加入表明铁磁流体滑动轴承的性能特性得到了改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Lubrication Performances of Short Journal Bearings Operating with Non-Newtonian Ferrofluids

The lubrication performances of short journal bearings operating with non-Newtonian ferrofluids have been investigated in the present study. Based upon the ferrofluid model of Shliomis and the micro-continuum theory of Stokes, a two-dimensional modified Reynolds equation is derived by taking into account the effects of rotation of ferromagnetic particles and the effects of non-Newtonian properties. As an application, the short-bearing approximation is illustrated. Comparing with the conventional non-ferrofluid case, the short journal bearings with ferrofluids in the presence of magnetic fields result in a higher load capacity. Comparing with the Newtonian ferrofluid case, the non-Newtonian effects of couple stresses provide an enhancement in the load capacity, as well as a reduction in the friction parameter. The inclusion of non-Newtonian couple stresses signifies an improvement in performance characteristics of ferrofluid journal bearings.

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来源期刊

Zeitschrift Fur Naturforschung Section A-A Journal of Physical Sciences 物理-物理：综合

CiteScore

3.00

自引率

5.60%

发文量

审稿时长

3.3 months

期刊介绍： A Journal of Physical Sciences: Zeitschrift für Naturforschung A (ZNA) is an international scientific journal which publishes original research papers from all areas of experimental and theoretical physics. Authors are encouraged to pay particular attention to a clear exposition of their respective subject, addressing a wide readership. In accordance with the name of our journal, which means “Journal for Natural Sciences”, manuscripts submitted to ZNA should have a tangible connection to actual physical phenomena. In particular, we welcome experiment-oriented contributions.