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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >Dynamic Modeling of a Dual Clearance Squeeze Film Damper. Part II
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Dynamic Modeling of a Dual Clearance Squeeze Film Damper. Part II

机译：双间隙挤压膜阻尼器的动态建模。第二部分

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摘要

Squeeze film dampers (SFD) have been used for many years to control the vibrations of the shafts in high-speed rotating machinery. Dual squeeze film dampers are essentially a combination of two SFDs separated by a sleeve. Normal operation utilizes only one oil film, as in a conventional damper, and the sleeve is fixed in place. However, under high load conditions, the sleeve is released and both oil films become operational. An experimental facility was designed and built to study both single and dual SFD behavior within mechanically controlled orbits. The first part of this paper presented a description of this test rig and provides a dynamic model of a single SFD. In this portion of the paper, we present results obtained while the inner sleeve is released and both oil films are operational. Here the inner sleeve is not supported by any mechanical device; the anti-rotational effect is provided by the opposed actions of the inner oil film and of the outer oil film. The modeling covers the inner and the outer oil films, the elastic fixtures, the unbalanced shaft and the sleeve. Numerical results are compared with the exp erimental data.
机译：挤压膜阻尼器（SFD）多年来一直用于控制高速旋转机械中轴的振动。双挤压膜阻尼器实质上是两个SFD的组合，由套筒隔开。正常操作中，与传统减震器一样，仅使用一个油膜，并且套筒固定在适当的位置。但是，在高负载条件下，套筒会松开，并且两个油膜都可以使用。设计并建造了一个实验设施，以研究机械控制轨道内的单和双SFD行为。本文的第一部分介绍了该测试平台，并提供了单个SFD的动态模型。在本文的这一部分中，我们介绍了释放内套筒且两个油膜均可工作时获得的结果。此处，内套筒不受任何机械设备的支撑；通过内部油膜和外部油膜的相反作用提供防旋转效果。该模型涵盖内部和外部油膜，弹性固定装置，不平衡轴和套筒。将数值结果与实验数据进行比较。

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