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Abstract
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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
Submitted: December 07, 2012
Accepted: January 17, 2013
Published: July 25, 2013 |
Abstract:
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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.
Key words: Crack, dynamic characteristics, nonlinear, rotor-bearing system, stiffness, ,
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Abstract
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Cite this Reference:
Yue-Gang Luo, Song-He Zhang, Bin Wu and Hong-Ying Hu, . Dynamics Analysis of Nonlinear Stiffness Rotor-Bearing System with Crack Fault. Research Journal of Applied Sciences, Engineering and Technology, (11): 2093-2097.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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