On Transient EHL of a Skew Roller Subjected to a Load Impact in Rolling Bearings

机译：在滚动轴承负荷冲击的歪斜辊的瞬态EHL上

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Based on the non-steady state operating condition in machine elements, numerical analysis of a transient elastohydrodynamic lubrication (EHL) finite line contact between a skewed roller and an outer race in cylindrical roller bearings was carried out, and a complete numerical solution of skewed roller pairs EHL under the transient condition was obtained. The effects of the load impact, together with the skewing angle impulses on the lubricating performance of skew roller pairs were discussed. Results show that, different from the steady state, the transient effect of the skew roller lubrication is mainly governed by the skew angle impulse, and the load impact. The film dimple is generated during the load impact, or the skewing angle impulse due to the normal approach velocity of the film. Compared to that of the ideal roller, the minimum film thickness decreases due to the roller skew when the transient load happens. Variation in the skewing angle leads to contrary distribution of the film thickness at the two half parts of the roller. Meanwhile, it can decrease the minimum film thickness and be harmful to the lubrication compared to the steady state. Consequently, the transient effect in the process of lubrication of skew roller pairs should not be neglected.

机译：基于机器元件中的非稳态操作条件，进行了瞬态弹性流动润滑（EHL）在圆柱滚子轴承中的外圈之间的瞬态弹性流动润滑（EHL）有限线接触的数值分析，以及倾斜辊的完整数值溶液获得瞬态条件下的对EHL。讨论了负载撞击的影响，以及偏斜角脉冲对倾斜滚子对的润滑性能的影响。结果表明，与稳态不同，偏斜辊润滑的瞬态效果主要受偏斜角脉冲的管辖，以及负荷撞击。由于薄膜的正常接近速度，在负载冲击期间产生膜凹坑或偏斜角脉冲。与理想辊的相比，当瞬态负载发生时，最小膜厚度由于滚轮歪斜而降低。偏斜角的变化导致辊子两半部分的膜厚度的相反分布。同时，与稳态相比，它可以降低最小膜厚度并对润滑有害。因此，不应忽略偏斜辊对润滑过程中的瞬态效应。

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《International Conference on Engineering Tribology and Applied Technology》|2017年|ix 2684p|共12页
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作者
LIU Xiaoling; SONG Datong; YANG Peiran;
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中图分类 TB3-532;
关键词
Skewing roller; Load impact; Skew angle variation; Transient EHL;

机译：倾斜滚子;负荷撞击;偏斜角度变化;瞬态EHL;

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1. Application of the Inverse EHL Solution to Increase the Loading Capacity of Roller Bearings [J] . Ziwei Cui, Jurgen Zech Tribologie und Schmierungstechnik . 2002,第2期

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4. On Transient EHL of a Skew Roller Subjected to a Load Impact in Rolling Bearings [C] . LIU Xiaoling, SONG Datong, YANG Peiran International Conference on Engineering Tribology and Applied Technology . 2017

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On Transient EHL of a Skew Roller Subjected to a Load Impact in Rolling Bearings

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