Floating Ring Balance Analysis of Journal Floating Ring Hybrid Bearing in Turbulent Regime

Abstract:

An externally pressurized deep/shallow pockets hybrid journal floating ring bearing compensated by flat capillary restrictor which can meet the need of high speed rotating machinery is presented in this paper. Bases on turbulent flow theory, the equations governing the flow of inner and outer fluid film in the journal floating ring bearing are established. The control equations together with the pressure boundary condition and the restrictor flow equation are solved by using the Finite Element Method. The balance of floating ring is achieved by adjusting ring-to-shaft speed ratio, inner film radial clearance and inner film eccentricity ratio. It can be seen from simulation results that the ring-to-shaft speed ratio and inner film clearance vary slightly and the floating ring can keep balance under different speed and eccentricity ratio. The variation of static and dynamic performance with eccentricity and rotational speed are calculated and analyzed based on floating ring balance.

• Periodical: Applied Mechanics and Materials (Volumes 672-674)
• Pages: 1637-1641
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.672-674.1637
• Online since: October 2014
• Authors: Hong Guo*, Shao Lin Zhang
• Keywords: Floating Ring Balance, Journal Hybrid Bearing, Ring-to-Shaft Speed Ratio, Turbulent Flow

References

[1] L. Tian, W.J. Wang, Z.J. Peng: Mechanical System and Signal Processing, 31(2012), p.155.

[2] L. San Andres, V. Barbarie, et al.: J. of Eng. for Gas Turbines and Power, v 134(2012), p.10.

[3] L. Tian, W.J. Wang, Z.J. Peng: Mechanical Systems and Signal Processing, 34(2013), p.298.

[4] H. Guo, X.M. Lai, X.L. Wu and S.Q. CEN: Tribology Transcations. Vol. 52(2009), p.204.

[5] J. Frenea and M. Arghir: Tribol. Int. Vol. 39(2006), p.734.

[6] J.K. Wang and M.M. Khonsari: Tribol. Int. Vol. 39(2006), p.701.

[7] H. Guo, B.Q. Xia, S.Q. Cen: Advanced Materials Research. Vols. 197-198 (2011) p.1776.