For investigating the dynamic response of a hydrodynamic thrust bearing-mounted flexible rotor, the dynamic characteristic data of thrust bearings for high surface velocities are applied for constructing the equation of motion for the rotor system, which is modeled with the finite element method (FEM). Based on the short bearing approximation and the π film cavitation model of the nonlinear oil-film forces, the dynamic responses are investigated using direct numerical integration with a variable order solver based on the numerical differentiation formulas (NDFs). Harmonic, quasi-periodic and chaotic motions are predicted for a range of spin speeds of the rotor. Poincare´ maps of predicted rotor trajectories are also examined. It shows that spin speeds of the rotor and the oil film force coefficient might promote undesirable non-synchronous vibrations.
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ASME Turbo Expo 2002: Power for Land, Sea, and Air
June 3–6, 2002
Amsterdam, The Netherlands
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-3609-6
PROCEEDINGS PAPER
Dynamic Response of a Hydrodynamic Thrust Bearing-Mounted Rotor Available to Purchase
T. N. Shiau,
T. N. Shiau
National Chung Cheng University, Chia Yi, Taiwan, R.O.C.
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K. S. Hsu,
K. S. Hsu
National Chung Cheng University, Chia Yi, Taiwan, R.O.C.
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J. R. Chang
J. R. Chang
Nan-Jeon Institute of Technology, Tainan, Taiwan, R.O.C.
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T. N. Shiau
National Chung Cheng University, Chia Yi, Taiwan, R.O.C.
K. S. Hsu
National Chung Cheng University, Chia Yi, Taiwan, R.O.C.
J. R. Chang
Nan-Jeon Institute of Technology, Tainan, Taiwan, R.O.C.
Paper No:
GT2002-30314, pp. 795-801; 7 pages
Published Online:
February 4, 2009
Citation
Shiau, TN, Hsu, KS, & Chang, JR. "Dynamic Response of a Hydrodynamic Thrust Bearing-Mounted Rotor." Proceedings of the ASME Turbo Expo 2002: Power for Land, Sea, and Air. Volume 4: Turbo Expo 2002, Parts A and B. Amsterdam, The Netherlands. June 3–6, 2002. pp. 795-801. ASME. https://doi.org/10.1115/GT2002-30314
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