Affiliation:
1. Department of Mechanical Engineering, Texas A&M University, College Station, TX 77840
Abstract
The paper considers vibration response of spinning shafts supported by flexible fluid film bearings to sudden mass imbalance (blade loss). A time transient study of the plain journal bearing with thermal effects is performed. A comparison between three transient analyses is performed. The three transient analyses studied are, the full nonlinear analysis, linear analysis using dynamic coefficients, and pseudo transient analysis using static application of dynamic loads. The validity of the nonlinear transient analysis is checked by matching the lower unbalance results with the linear analysis and the static equilibrium position results with Newton-Raphson iterative scheme. A nonlinear transient analysis of the tilt pad journal bearing is also performed, and a comparison is drawn between the three approaches.
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference18 articles.
1. Allaire, P. E., Gunter, E. J., Eierman, R. G., Nicholas, J. C., 1975, “Film Thickness in Plain Journal, Partial Arc, Axial Groove, Multilobed, Tilting Pad, and Pressure Dam Bearings—A Unified Approach,” University of Virginia Report, University of Virginia, Charlottesville, VA.
2. Bishop J. L. , and EttlesC. M., 1981, “The Seizure of Journal Bearings by Thermoelastic Mechanisms,” Wear, Vol. 79, pp. 37–52.
3. Choy F. K. , BraunM. J., and HuY., 1991, “Nonlinear Transient and Frequency Response Analysis of a Hydrodynamic Journal Bearing,” ASME JOURNAL OF TRIBOLOGY, Vol. 114, pp. 448–454.
4. Christie I. , GriffithsD. F., and MitchellA. R., 1976, “The First Element Methods for Second Order Differential Equations with Significant First Derivatives,” International Journal for Numerical Methods in Engineering, Vol. 10, pp. 1389–1396.
5. Donea J. , and QuartrapelleL., 1992, “An Introduction to Finite Element Methods for Transient Advection Problems,” Computer Methods in Applied Mechanics and Engineering, Vol. 95, pp. 169–203.
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