流體潤滑軸承之動壓效應探討

Study on Hydrodynamic Effect of Fluid-Lubricated Bearing

陳世康(Shih‐Kang Chen)

指導教授 ： 康淵 ； 張永鵬

中原大學/工學院/機械工程研究所/博士(2015年)

https://doi.org/10.6840/cycu201500878

摘要

本論文研究氣體止推軸承、人字溝槽油動壓頸軸承及毛細管混合動靜壓油腔頸軸承的特性參數。本研究使用微擾法將雷諾方程式線性化，並利用有限差分法求解，進而求出穩定性門檻及臨界漩振比，藉此判別系統之穩定性。
本文的分析結果揭示出，氣體止推軸承腔深越淺穩定性越佳；人字溝槽頸軸承最佳設計參數為八組溝槽、斜角約40度、槽深比0.5、槽寬比0.5時承載最大，而且低偏心率時穩定性才會比平滑頸軸承佳；毛細管頸軸承提出各動靜態性能參數，並與已知文獻比較。

關鍵字

止推軸承 ； 人字溝槽頸軸承 ； 混壓軸承 ； 孔口節流器 ； 毛細管節流器

並列摘要

The Reynolds equation was linearized by using the perturbation method and subsequently solved with finite difference techniques, and determined the stability threshold. The results reveal the influences of recess depth, land size, and speed parameter on the stability of the bearing system.
There is the better stability in Shallow-recessed thrust bearing. The optimal design parameters of eight rectangular profile Herringbone -groove-journal bearing is 40 degrees groove angle, 0.5 groove depth ratio and 0.5 groove width ratio. The HGJBs are much more stable than plain journal bearing especially for small eccentricity. Finally, the paper propose static and dynamic performance parameters, and compared with the known literature.

並列關鍵字

thrust bearing ； Herringbone-Grooved Journal Bearing ； hybrid journal bearing ； orifice restrictor ； capillary restrictor

參考文獻

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2. Boffey, D.A. “An xperimental investigation into the rubber- sabiliztion of an externally-pressurized air-lubricated thrust bearing,” Journal of Lubrication Technology, Vol. 120, pp. 65–70, 1980, January

3. Brewe, D. E., “Theoretical Modeling of the Vapor Cavitation in Dynamically Loaded Journal Bearings,” ASME Journal of Tribology, Vol. 108, pp. 628-638., 1986

4. Charkia, A., Diopa, K., Champmartinb, S., Ambarib, A., “Numerical simulation and experimental study of thrust air bearings with multiple orifices,” International Journal of Mechanical Sciences, Vol. 72, pp. 28–38, 2013

5. Chen, C. H. Kang,Yuan, Chang, Yeon-Pun, Wang, Yea-Ping, Lee, Hsing-Han, “Influence of restrictor on stability of the rigid rotor–hybrid bearing system,” Journal of Sound and Vibration, Vol. 297, Issues 3–5, pp. 635-648, 2006