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首页> 外文期刊>Lubrication science >Effects of thermally induced inhomogeneous shear and surface thermal boundary conditions on the shear stress in sliding elastohydrodynamic contacts
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Effects of thermally induced inhomogeneous shear and surface thermal boundary conditions on the shear stress in sliding elastohydrodynamic contacts

机译：热诱导非均匀剪切和表面热边界条件对滑动弹性流体动力接触中的剪切应力的影响

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摘要

Numerous research work has shown that significant thermally induced cross-film inhomogeneous shear or thermal shear localisation may be developed in sliding elastohydrodynamic lubrication (EHL) contacts with pronounced consequences. This paper uses the theoretical framework established in previous research to further analyse the effects of the shear localisation on the lubricant shear stress and thus the EHL traction. Results obtained suggest that the shear localisation significantly accelerates the thermally induced reduction of the shear stress in sliding EHL contacts. The study also shows dramatic reduction of the shear stress in EHL contacts with one-insolated surface, which is significantly attributed to the more intensified thermal shear localisation near the insolated surface. The practical significance of the dramatic shear stress reduction is discussed.
机译：大量研究工作表明，在滑动弹性流体动力润滑（EHL）接触件中可能会产生明显的热诱导跨膜非均匀剪切或热剪切局部化现象，从而产生明显的后果。本文使用先前研究中建立的理论框架来进一步分析剪切局部化对润滑剂剪切应力和因此产生的EHL牵引力的影响。获得的结果表明，剪切局部化显着加速了滑动EHL接触中热诱导的剪切应力的减小。该研究还显示，在与一个独立表面接触的EHL接触中，剪切应力显着降低，这显着归因于该隔热表面附近的热剪切局部化程度更高。讨论了减少剪切应力的实际意义。

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