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Thermal-EHL: Analysis of slip/no-slip contact at high slide-to-roll ratio
Tribology International ( IF 6.2 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.triboint.2020.106617
Y. Zhao , P.L. Wong

Abstract Shear heating can be considerable at elastohydrodynamic lubricated (EHL) contacts under high slide-to-roll ratios. Generally, the lubrication is weakened because of the reduced viscosity due to temperature increase. Although it can be alleviated by boundary slip at the bearing, thermal effect would contribute to bearing load-carrying-capacity under certain circumstances. The paper thus presents a complete thermal-EHL analysis of a non-wetting/wetting contact under a high slide-to-roll ratio to understand the interplay of boundary slip and heat. Boundary slip is modeled with the circular critical shear stress criterion. The coupled mechanism of boundary slip and thermal effects on film formation is unveiled.

中文翻译:

Thermal-EHL:高滑滚比下的滑动/无滑动接触分析

摘要 在高滑辊比下,弹性流体动力润滑 (EHL) 接触处的剪切热可能相当大。通常,由于温度升高导致粘度降低,润滑减弱。虽然它可以通过轴承的边界滑移来缓解,但在某些情况下,热效应会影响轴承的承载能力。因此,本文对高滑辊比下的非润湿/润湿接触进行了完整的热 EHL 分析,以了解边界滑移和热量的相互作用。边界滑移使用圆形临界剪应力准则进行建模。揭示了边界滑移和热效应对成膜的耦合机制。
更新日期:2021-01-01
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