Experiment Research of Two-Span Rotor-Bearing System with Rub-Impact and Crack Faults

Abstract:

The test rig of two-span rotor-bearing system with rub-impact and crack faults was constructed. The vibration of the rotor-bearing system was observed for different conditions, such as single rub-impact fault, double rub-impact faults and coupling faults of rubbing and crack. The 3D-waterfall spectrum of rotor system was used to analyze the dynamic characteristics of the system during faults. The results indicate there appears 6-superharmonic frequency component on double rub-impact faults. The amplitudes of subharmonic frequencies decrease obviously and it of superharmonic frequencies increases on coupling faults of rubbing and crack, and the superharmonic frequency components are different obviously in different span.

• Periodical: Advanced Materials Research (Volumes 706-708)
• Pages: 1335-1338
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.706-708.1335
• Online since: June 2013
• Authors: Yuegang Luo, Song He Zhang, Bin Wu, Hui Ma
• Keywords: Crack, Rotor System, Rub-Impact, Subharmonic Vibration, Superharmonic Vibration

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