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2013 (Vol. 6, Issue: 11)
Article Information:

Dynamics Analysis of Nonlinear Stiffness Rotor-Bearing System with Crack Fault

Yue-Gang Luo, Song-He Zhang, Bin Wu and Hong-Ying Hu
Corresponding Author:  Yue-Gang Luo 

Key words:  Crack, dynamic characteristics, nonlinear, rotor-bearing system, stiffness, ,
Vol. 6 , (11): 2093-2097
Submitted Accepted Published
December 07, 2012 January 17, 2013 July 25, 2013
Abstract:

The model of nonlinear stiffness rotor-bearing system with crack fault was set up, and the nonlinear dynamic characteristics of the system were analyzed by numerical method. In critical rotational speed range, there are frequency division motions when the crack depth is sallow and chaotic motion when the crack is deep. In supercritical rotational speed range, the main motions are periodical frequency divisions. The numbers increase along with the depth of crack. In ultra-supercritical rotational speed range, there are quasi-periodic motion decreasing when the crack depth is sallow and periodical-3 motion when the crack is deep. The conclusions provide a theoretic basis reference for the failure diagnosis to the nonlinear stiffness rotor-bearing systems with crack fault.
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  Cite this Reference:
Yue-Gang Luo, Song-He Zhang, Bin Wu and Hong-Ying Hu, 2013. Dynamics Analysis of Nonlinear Stiffness Rotor-Bearing System with Crack Fault.  Research Journal of Applied Sciences, Engineering and Technology, 6(11): 2093-2097.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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