方位(导航)
箔片轴承
箔法
转子(电动)
再现性
涡轮机械
流离失所(心理学)
材料科学
流体轴承
声学
机械工程
结构工程
机械
工程类
复合材料
计算机科学
物理
润滑
化学
心理学
色谱法
人工智能
心理治疗师
作者
Karim Shalash,Jürg Schiffmann
出处
期刊:Journal of engineering for gas turbines and power
[ASME International]
日期:2020-02-03
卷期号:142 (3)
被引量:2
摘要
Abstract Foil bearings are strong candidates to support oil-free turbomachinery. Although foil bearings are a widely used technology, models describing their behavior are not validated using the film pressure, which is the fundamental variable of any fluid film bearing. This paper presents pressure profiles measured within the gas film of a journal foil bearing. The pressure is measured using an instrumented rotor with embedded pressure probes and wireless telemetry. The measurements yield the simultaneous circumferential pressure profiles at two axial positions inside the bearing. Proximity probes on the bearing allowed the measurement of the corresponding rotor orbits. The bearing under investigation is a bump-type compliant journal bearing, with a nominal diameter of 40 mm, an L/D = 1, and was tested up to 37.5 krpm. Load-displacement and break-away tests were performed on the test bearing in order to identify bearing parameters necessary for reproducibility. The pressure profiles are compared to a frequency domain foil bearing model. This paper is a step toward further fundamental understanding of the foil bearing behavior and the validation of the rich modeling literature.
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