Open Access Open Access  Restricted Access Subscription or Fee Access

A Comparative Performance Analysis of Gas Lubricated Cylindrical and Elliptical Journal Bearings


(*) Corresponding author


Authors' affiliations


DOI: https://doi.org/10.15866/ireme.v8i5.2985

Abstract


The finite element method is employed to perform a comparative analysis of gas lubricated cylindrical and elliptical journal bearings in this work. A finite element procedure, based on the Galerkin weighted residual method, is specially devised to solve the zeroth- and first-order lubrication equations for plain cylindrical and non-cylindrical hydrodynamic journal bearings running on thin gas fluid films. Load-carrying capacity and dynamic force coefficients of gas cylindrical and elliptical journal bearings are computed for some geometric and operating parameters, such as journal eccentricity ratio and rotational speed. Several comparative curves of steady-state and dynamic bearing characteristics depict the differences in the behavior of some gas lubricated fixed-geometry journal bearings.
Copyright © 2014 Praise Worthy Prize - All rights reserved.

Keywords


Gas Bearings; Cylindrical Journal Bearing; Elliptical Journal Bearing; Finite Element Method

Full Text:

PDF


References


Maneshian, B., Gandjalikhan Nassab, S.A., Hydrodynamic analysis of journal bearings lubricated by ferrofluids running under turbulent condition, (2010) International Review of Mechanical Engineering (IREME), 4 (6), pp. 656-663.

B. J. Hamrock, Fundamentals of Fluid Film Lubrication (New York: McGraw-Hill, 1994).
http://dx.doi.org/10.1201/9780203021187

C. H. T. Pan, Gas Lubrication: 1915-1990, In Achievements in Tribology (New York: ASME Publications, 1990, 31-51).

F. Y. Zeidan, Developments in Fluid Film Bearing Technology, Turbomachinery International, Vol. 33, pp. 1-8, 1992.

P. E. Allaire, R. D. Flack, Design of Journal Bearings for Rotating Machinery, Proc. 10th Turbomachinery Symposium, Houston, USA, 1981, pp. 24-45.

M. M. Chandra, M. Malik, R. Sinhasan, On the Dynamic Behavior of Gas Lubricated Tow Lobe Journal Bearing Configurations, ASLE Transactions, Vol. 26, pp. 411-414, 1983.
http://dx.doi.org/10.1080/05698198308981521

M. T. Ma, C. M. Taylor, An Experimental Investigation of Thermal Effects in Circular and Elliptical Plain Journal Bearings, Tribology International, Vol. 29, pp. 19-26, 1996.
http://dx.doi.org/10.1016/0301-679x(95)00029-4

J. W. Lund, Review of the Concept of Dynamic Coefficients for Fluid Film Journal Bearings, ASME Journal of Tribology, Vol. 109, pp. 37-41, 1987.
http://dx.doi.org/10.1115/1.3261324

K. J. Bathe, Finite Element Procedures in Engineering Analysis (Englewood Cliffs, NJ: Prentice Hall, 1982).
http://dx.doi.org/10.1177/058310247801000905

M. T. C. Faria, L. San Andrés, On the Numerical Modeling of High-Speed Hydrodynamic Gas Bearings, ASME Journal of Tribology, Vol. 122, pp. 124-130, 2000.
http://dx.doi.org/10.1115/1.555335

G. W. Stewart, Afternotes on Numerical Analysis (Philadelphia: SIAM books, 1996).
http://dx.doi.org/10.1137/1.9781611971491

D. Bonneau, J. Absi, Analysis of Aerodynamic Journal Bearings with Small Number of Herringbone Grooves by Finite Element Method, ASME Journal of Tribology, Vol. 116, pp. 698-704, 1994.
http://dx.doi.org/10.1115/1.2927320

W. M. Miranda, M. T. C. Faria, Lateral Vibration Analysis of Flexible Shafts Supported on Elliptical Journal Bearings, Tribology Letters, Vol. 48, pp. 217-227, 2012.
http://dx.doi.org/10.1007/s11249-012-0018-5


Refbacks

  • There are currently no refbacks.


Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize