Effects of double parabolic profiles with groove textures on the hydrodynamic lubrication performance of journal bearing under steady operating conditions

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Mechanics & Industry Pub Date : 2020-07-01 DOI:10.1051/meca/2020018

Chongpei Liu, Wanyou Li, Xi-qun Lu, Bin Zhao

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引用次数: 3

Abstract

The textures on the bushing surface have important effects on the performance of journal bearing. In this study, the effects of double parabolic profiles with groove textures on the hydrodynamic lubrication performance of journal bearing under steady operating conditions are investigated theoretically. The journal misalignment, asperity contact and thermal effects are considered, while the profile modifications due to running-in are neglected. The Winkler/Column model is used to calculate the elastic deformation of bushing surface and the adiabatic flow hypothesis is adopted to obtain the effective temperature of lubricating oil. The numerical solution is established by using finite difference and overrelaxation iterative methods, and the rupture zone of oil film is determined by Reynolds boundary conditions. The numerical results reveal that the double parabolic profiles with groove textures with proper location and geometric sizes can increase load carrying capacity and reduce friction loss under steady operating conditions, which effectively overcome the drawbacks of double parabolic profiles. This novel bushing profile may help to reduce the bushing edge wear and enhance the lubrication performance of journal bearing.

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带沟槽织构的双抛物线型对滑动轴承稳态润滑性能的影响

轴瓦表面的纹理对滑动轴承的性能有重要影响。本文从理论上研究了带沟槽织构的双抛物线型对滑动轴承稳态工况下流体动力润滑性能的影响。考虑了轴颈错位、粗糙接触和热效应，而忽略了磨合引起的轮廓变化。采用Winkler/Column模型计算轴套表面的弹性变形，采用绝热流动假设计算润滑油的有效温度。采用有限差分法和超松弛迭代法建立了数值解，并采用雷诺边界条件确定了油膜破裂区。数值计算结果表明，在稳定工况下，选择合适位置和几何尺寸的沟槽结构的双抛物线型能有效地提高承载能力，减小摩擦损失，有效地克服了双抛物线型的缺陷。这种新颖的轴瓦轮廓有助于减少轴瓦边缘磨损，提高滑动轴承的润滑性能。

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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来源期刊

Mechanics & Industry ENGINEERING, MECHANICAL-MECHANICS

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： An International Journal on Mechanical Sciences and Engineering Applications With papers from industry, Research and Development departments and academic institutions, this journal acts as an interface between research and industry, coordinating and disseminating scientific and technical mechanical research in relation to industrial activities. Targeted readers are technicians, engineers, executives, researchers, and teachers who are working in industrial companies as managers or in Research and Development departments, technical centres, laboratories, universities, technical and engineering schools. The journal is an AFM (Association Française de Mécanique) publication.