非稳态条件下航空球轴承的瞬态混合热弹性流体动力润滑分析

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-10-22 DOI:10.1016/j.triboint.2024.110342

Jiqiang Wu , Tao He , Dandan Wang , Liqin Wang , Shengyuan Jiang , Yaqian Wang , Kang Chen , Chuanwei Zhang , Kun Shu , Zhen Li

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引用次数: 0

摘要

考虑到热效应以及速度、载荷和接触几何形状的变化，提出了轴承的瞬态混合热弹性流体动力润滑模型。在轴承动态和润滑分析的基础上，研究了轴承转速和启停条件对动态行为和润滑性能的影响。结果表明，当轴承转速超过某一临界值时，转速的增加会降低油膜厚度，尤其是外滚道。轴承加速度的增加会导致初始启动过程中滑辊比和油膜温度升高。与启动过程相比，停机过程中的润滑变化具有类似的相反趋势，但整体润滑性能更好。

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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Transient mixed thermal elastohydrodynamic lubrication analysis of aero ball bearing under non-steady state conditions

A transient mixed thermal elastohydrodynamic lubrication model of bearing considering the thermal effect and the changes in velocity, load, and contact geometry is proposed. Based on the bearing dynamic and lubrication analysis, the effects of bearing rotational speed and start-stop conditions on the dynamic behavior and lubrication performance are studied. Results show that when the bearing rotational speed exceeds a certain critical value, the increasing speed will reduce the film thickness, especially the outer raceway. The increasing bearing acceleration can cause a higher slide-roll ratio and film temperature at the initial start-up process. Compared with the start-up process, the lubrication change in the shut-down process has a similar opposite trend, but the overall lubrication performance is better.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.