Instability Due to Fluid Leakage of a Rotor System With Anisotropic Support

Wang, J. H.; Tsai, M. T.

doi:10.1115/1.3269819

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1989

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“…The assembled system equation of motion is generally represented by the form (Wang et al, 1988b) [M]…”

Section: Stability Analysismentioning

confidence: 99%

Threshold Performance Optimization of a Rotor-Bearing System Subjected to Leakage Excitation

Wang

Shih

1989

Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation;

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The fluid leakage in shroud of the blades and the labyrinth seal of turbomachinery may induce instability and limit the output rating. In this work, the optimization technique has been used to find the diameters of shaft elements and the bearing supports so that the optimized rotor-bearing system can sustain larger fluid leakage force. The results show that the threshold performance of rotor-bearing systems can be significantly improved by slight modification of the shaft diameters. The results also indicate that, the threshold performance can be improved more significantly by the combination of optimum bearing supports and optimum shaft diameters.

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“…The assembled system equation of motion is generally represented by the form (Wang et al, 1988b) [M]…”

Section: Stability Analysismentioning

confidence: 99%