Dynamics of Multi-Disk Rotor System with Rub-Impact Fault

Abstract:

In this paper, a multi-disk rotor system is studied. The rotor system is properly simplified and the finite element model is established. Assuming that contact region is an arc when the practical rotor-stator rub-impact fault occurs. Contact analysis and nonlinear finite element method are adopted to carry out numerical simulation of rub-impact. The results show that 1/2 fractional frequency components appear in slight rub-impact stage; 1/3 fractional frequency components appear in moderate rub-impact stage and 1/4 fractional frequency components appear in serious rub-impact stage. The research results will provide theoretical support for fault diagnosis of rub-impact.

• Periodical: Applied Mechanics and Materials (Volumes 16-19)
• Pages: 1082-1086
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.16-19.1082
• Online since: October 2009
• Authors: Ji Shuang Dai, Hui Ma, Xue Jun Wang, Bang Chun Wen
• Keywords: Dynamic, Finite Element Model (FEM), Multi-Disk Rotor System, Rub-Impact

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