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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >INVESTIGATION OF CAVITATION PHENOMENON IN AN OSCILLATORY OIL SQUEEZE FILM
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INVESTIGATION OF CAVITATION PHENOMENON IN AN OSCILLATORY OIL SQUEEZE FILM

机译：振荡油压膜中空化现象的研究

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摘要

For the journal bearing under dynamic loading or under large external excitation condition, the oil film will not be a simple form as normal divided into continue oil film area and cavitation area. Because of squeeze effect, the boundary of oil film changes dynamically and oil film pressure shows more complex. As reviewed in [1], also there are some "cavitation algorithms"developed, the oil film performance under dynamic loading remains unclear. For the research on nonlinear analysis of rotor-bearing system, one of the important work is to obtain oil film performance model under large external excitation. In order to investigate cavitation phenomenon, especially how cavitation changing and how much tensile stress oil films can support, a parallel-plate oscillatory squeeze film test-rig was built where a high-speed CCD was used to capture the development of cavitation, and synchronously the oil film pressure and the oscillatory displacement were measured. A new cavitation model also was proposed. In this paper, the new model will be validated with the experimental data. Some phenomenon also was investigated theoretically with new model.
机译：对于在动态载荷下或在大的外部激励条件下的轴颈轴承，油膜将不是简单的形式，因为法线分为连续油膜面积和空化面积。由于挤压作用，油膜的边界会动态变化，油膜压力会更加复杂。如文献[1]所述，还开发了一些“气蚀算法”，动态载荷下的油膜性能仍不清楚。对于转子轴承系统的非线性分析研究，重要的工作之一是获得大外部激励下的油膜性能模型。为了研究空化现象，特别是空化如何变化以及油膜可以支撑多少张拉应力，建立了一个平行板振荡挤压膜试验台，其中使用高速CCD捕获空化的发展，并同步进行。测量油膜压力和振荡位移。还提出了一种新的空化模型。在本文中，新模型将通过实验数据进行验证。新模型还从理论上研究了一些现象。

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