NDLI: Stability and bifurcation analysis of rotor-bearing-seal system

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Stability and bifurcation analysis of rotor-bearing-seal system

Content Provider	Scilit
Author	Ying, G. Y. Liu, S. L. Ma, R. Zheng, S. Y.
Copyright Year	2016
Description	Journal: Iop Conference Series: Materials Science and Engineering Labyrinth seals were extensively used in turbine units, and the seal fluid forces may induce self-excited vibrations of rotor under certain conditions. It has become the main factor to instability of rotor system. In this paper Muszynska seal fluid force model is used to investigate the stability of the rotor system. Nonlinear equations are numerically solved by Newmark integration method. The effect of different seal clearances and differential pressures on system stability is studied. The calculation results show that the dominant vibration component leading to instability changes with different seal clearance. With the differential pressure increased, the unstable speed is reduced. Then the bifurcation behavior of the system with and without seal force is calculated. Results show that the rotor vibration becomes severe and complicated, and the bifurcation behavior of the system has been changed when seal force is considered.
Related Links	http://iopscience.iop.org/article/10.1088/1757-899X/129/1/012064/pdf
ISSN	17578981
e-ISSN	1757899X
DOI	10.1088/1757-899x/129/1/012064
Journal	Iop Conference Series: Materials Science and Engineering
Volume Number	129
Language	English
Publisher	IOP Publishing
Publisher Date	2016-05-19
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Materials Science and Engineering Acoustics and Ultrasonics Mechanical Engineering Seal System Seal Fluid Fluid Force Differential Pressure
Content Type	Text
Resource Type	Article

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