Study on Nonlinear Vibration and Crack Fault of Rotor-bearing-seal Coupling System

Study on Nonlinear Vibration and Crack Fault of Rotor-bearing-seal Coupling System

The nonlinear dynamic model of rotor-bearing-seal system with crack in shaft is set up based on the coupling model of nonlinear oil-film force and Muszyska’s nonlinear seal fluid force. The dynamic vibration characteristics of the rotor-bearing-seal system and the effects of physical and structural...

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Bibliographic Details
Main Authors: Yuegang LUO, Songhe ZHANG, Bin WU, Wanlei WANG
Format: Article
Language:English
Published: IFSA Publishing, S.L. 2014-02-01
Series:Sensors & Transducers
Subjects:
Rotor system
Oil-film force
Seal force
Shaft crack
Nonlinear vibration.
Online Access:http://www.sensorsportal.com/HTML/DIGEST/february_2014/Vol_165/P_1867.pdf
Description
Summary:The nonlinear dynamic model of rotor-bearing-seal system with crack in shaft is set up based on the coupling model of nonlinear oil-film force and Muszyska’s nonlinear seal fluid force. The dynamic vibration characteristics of the rotor-bearing-seal system and the effects of physical and structural parameters of labyrinth seal and crack fault on movement character of the rotor were analyzed. The increases of seal length, seal pressure differential, seal radius and axial velocity are in favor of the stability of the system, and it of seal gap and crack depth are not in favor of the stability of the system.
ISSN:2306-8515
1726-5479

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