Purpose

This work aims to explore the combined effects of boundary slip and texturing on hydrodynamic journal bearings and identifies optimized slip and texture patterns to improve the performance of journal bearings.

Design/methodology/approach

The quadratic programming technique is used to study the influence of boundary slip on the lubrication performance of a two-dimensional journal bearing. A numerical model is used to analyze the effect of the cylindrical texture shape on the characteristics of journal bearings. It is concluded that the combination of slip and texture can be an effective approach to improve the performance of hydrodynamic journal bearings.

Findings

The results show that there is an interfacial shear stress (perfect slip surface) and that the role of the slip regime is to reduce friction. Numerical analyses indicate that the location and size of the slip and texture zone have a large effect on journal bearings. A comparison of the distribution forms of various texture–slip combinations indicates that the full texture–slip combination can prominently reduce the load-carrying capacity and that the “forward-slip backward-texture” configuration can considerably improve the performance of journal bearings.

Originality/value

The combined effects of boundary slip and texture on hydrodynamic journal bearings are meticulously examined. The patterns of the slip and texture are optimized, which can substantially improve the journal bearing performance.

中文翻译：

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轴颈轴承表面滑移纹理的优化设计

目的

这项工作旨在探讨边界滑动和纹理化对流体动力轴颈轴承的综合影响，并确定优化的滑动和纹理图案，以改善轴颈轴承的性能。

设计/方法/方法

二次编程技术用于研究边界滑动对二维轴颈轴承润滑性能的影响。使用数值模型来分析圆柱纹理形状对轴颈轴承特性的影响。结论是，滑移和纹理的组合可以是改善流体动力轴颈轴承性能的有效方法。

发现

结果表明存在界面剪切应力（完美的滑移表面），滑移机制的作用是减少摩擦。数值分析表明，滑移和纹理区的位置和大小对轴颈轴承影响很大。对各种纹理-滑移组合的分布形式的比较表明，完整的纹理-滑移组合可以显着降低承载能力，并且“前滑后退纹理”配置可以显着改善轴颈轴承的性能。

创意/价值

仔细检查了边界滑移和纹理对流体动力轴颈轴承的综合影响。滑移和纹理的图案得到了优化，可以显着提高轴颈轴承的性能。