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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >Analysis of EHL Circular Contact Start Up: Comparison with Experimental Results
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Analysis of EHL Circular Contact Start Up: Comparison with Experimental Results

机译：EHL循环接触启动分析：与实验结果的比较

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摘要

In this paper, the start up condition in elastohydrodynamic lubrication was studied on a steel ball on glass disc contact lubricated with a mineral oil. using a previously developed mixed phase lubrication contact model. The numerical simulation demonstrated the contact geometry change in the transition from initial solid contact to final fully lubricated contact, as well as the load sharing variation between lubricated and solid contacts during the start up. The numerical results of contact geometry was then compared with an experimental study of the same start up situation published by Glovnea and Spikes. The film thickness variations and the propagation of the solid-lubricated contact interface during the start up were compared. Furthermore, an analytical result of the propagation of the solid-lubricated contact interface was also generated by assuming the dominance of the wedge and squeeze terms in the Reynolds Equation, and was also compared with the numerical and experimental results. Good agreement exists among the analytical, numerical and experimental results. The good agreement proves the numerical model as a valid tool in studying the start up condition in elastohydrodynamic lubrication as the transition from solid contact to lubricated contact is of great importance when investigating the start up process and its effects on the overall lubrication performance.
机译：本文研究了用矿物油润滑的玻璃圆盘接触上的钢球上的弹性流体动力润滑的启动条件。使用先前开发的混合相润滑接触模型。数值模拟表明，在从初始固体接触到最终完全润滑接触的过渡过程中，接触几何形状发生了变化，并且在启动过程中，润滑和固体接触之间的负载分担变化。然后将接触几何的数值结果与Glovnea和Spikes发表的相同启动情况的实验研究进行了比较。比较了启动过程中的膜厚变化和固体润滑的接触界面的传播。此外，还通过假设雷诺方程中楔形和挤压项的支配性来生成固体润滑接触界面传播的分析结果，并将其与数值和实验结果进行了比较。在分析，数值和实验结果之间存在良好的一致性。良好的协议证明了该数值模型是研究弹性流体动力润滑启动条件的有效工具，因为在研究启动过程及其对整体润滑性能的影响时，从固体接触到润滑接触的过渡非常重要。

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