This paper investigates transient and steady state behavior of grooveless (angularly) misaligned bearings using finite element formulations of the complete two-dimensional Reynolds equation. Performance trends of misaligned bearings are compared with their aligned counterparts within the traditional framework of classical lubrication theory. Elastic/plastic deformations, thermal effects, surface roughness, and pressure-viscosity variations are not taken into account. It is found that misaligned bearings have infinite load and moment capacity as the endplane minimum film thickness approaches zero under transient journal squeeze motion and under steady load and speed conditions. These results differ markedly from finite capacity trends reported previously in both numerical and experimental studies. Predictions of squeeze rate and load capacity based on axially aligned bearings are also shown to be sufficient to approximate squeeze rate and load capacity for misaligned bearings for an appreciable range of midplane eccentricity ratios.
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July 2004
Technical Papers
Classical Bearing Misalignment and Edge Loading: A Numerical Study of Limiting Cases
S. Boedo,
S. Boedo
Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY 14623
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J. F. Booker
J. F. Booker
School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853
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S. Boedo
Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, NY 14623
J. F. Booker
School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division February 4, 2003; revised manuscript received August 6, 2003. Associate Editor: L. San Andre´s.
J. Tribol. Jul 2004, 126(3): 535-541 (7 pages)
Published Online: June 28, 2004
Article history
Received:
February 4, 2003
Revised:
August 6, 2003
Online:
June 28, 2004
Citation
Boedo, S., and Booker, J. F. (June 28, 2004). "Classical Bearing Misalignment and Edge Loading: A Numerical Study of Limiting Cases ." ASME. J. Tribol. July 2004; 126(3): 535–541. https://doi.org/10.1115/1.1739241
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