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首页> 外文会议>25th Leeds-Lyon Symposium on Tribology held in the Institut National des Sciences Appliquees de Lyon, Lyon, France, 8th - 11th September, 1998. >For the establishment of a New EHL theory
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For the establishment of a New EHL theory

机译：建立新的EHL理论

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摘要

It is well-known that the film shape in ealstohydrodynamic lubrication (EHL) of point contacts has a flat plateau bounded by a horseshoe shaped constriction. The author and his co-workers have, however, observed under sliding conditions in point contact EHL that a deep conical depression (dimple) is produced in place of the flat plateau. The present EHL theory cannot explain why such a dimple occurs. In this paper, some of necessary conditions for the dimple formation have been discussed. It has also been shown that there exists slip at the wall in EHL contacts even if the oil behaves as a Newtonian fluid. On the basis of these important findings, it has been asserted that the establishment of a new EHL theory is needed to understand the EHL problems deeply and to improve the working performance and durability of machine elements.
机译：众所周知，点接触的流体动压润滑（EHL）中的膜形状具有由马蹄形收缩部界定的平坦平台。但是，作者和他的同事在点接触EHL的滑动条件下观察到，会产生深的圆锥形凹陷（凹坑）代替平坦的平台。目前的EHL理论无法解释为什么会出现这种酒窝。在本文中，讨论了形成凹坑的一些必要条件。还已经表明，即使油表现为牛顿流体，在EHL触头中的壁上也会存在滑移。在这些重要发现的基础上，有人断言需要建立一种新的EHL理论，以深刻理解EHL问题并改善机器元件的工作性能和耐用性。

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