Experimental Study on Cavitation Boundary of Journal Bearing

Abstract:

Under high and super-high speed conditions, oil film of the journal bearing is easy to crack and then becomes cavitation. The existence of cavitation has a great effect on the work characteristics of the bearing. Cavitation boundary of a three-groove journal beaing was investigated on the journal bearing experimental rig. The influences of rotating speed and supply pressure on cavitation boundary were studied. And experimental equations of reformation location and the percent of rupture area are established. The results show that rupture location of oil film is not related with rotating speed and supply pressure, otherwise reformation location of oil film is effected greatly by them. The experimental equations lay foundations for next research on cavitation theory model and stability.

• Periodical: Applied Mechanics and Materials (Volume 378)
• Pages: 362-366
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.378.362
• Online since: August 2013
• Authors: Ying Yang, Li Xu, Wen Qing Liu
• Keywords: Cavitation Shape, Experimental Equation, Reformation Location of Oil Film, Rupture Location of Oil Film

References

[1] Ying Yang. Theoretical and Experimental Study on the Cavitation Characteristics of a Spiral Oil Wedge Journal Bearing. Shandong: Shandong University, (2010), pp.1-10.

[2] Hong Su. Determining the Value of Pressure in the Cavitation Zone for Steady-state Journal Bearing. Mechanical Engineer, (2007), pp.88-90.

[3] O. Reynolds. On the Theory of Lubrication and Its Application to Beauchamp Tower's Experiments, Including an Experimental Determination of the Viscosity of Olive Oil. Philos, Trans. R. Sco. London ser, (1886), A177, pp.157-233.

DOI: 10.1098/rstl.1886.0005

[4] H. G. Elord. A Cavitation Algorithm. Trans. Of the ASME, Vol. 103(1981), pp.350-354.

[5] B. O. Jacobson, B. J. Hamrock. High-speed Motion Picture Camera Experiments of Cavitation in Dynamically Loadly Journal Bearings. Proceeded for the Lubrication Conference of Mechanical Engineers. Washington, D.C. (1982), p.270.

DOI: 10.1115/1.3254639

[6] D. C. Sun, D. E. Brewe. A High Speed Photography Study of Cavitation in a Dynamically Loaded Journal Bearing. Journal of Tribology, Trans ASME, Vol. 113 (1991), pp.287-294.

DOI: 10.1115/1.2920618

[7] Chaofeng Fang. Study on Transient Full Oil Film Moving of the Dynamic Load Bearing. Shanghai: Shanghai University, (2007), pp.3-9.

[8] Meili Sun, Zhiming Zhang. Experimental Study of the Film Distribution of Statically and Dynamically Loaded Cylinder Journal Bearing. Journal of Shanghai University(Natural Science), Vol. 3(1997), pp.500-507.