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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ren, Zhaohui Zhou, Shihua Li, Chaofeng Wen, Bangchun |
| Copyright Year | 2014 |
| Abstract | Extensive studies on rotor systems with single or coupled multiple faults have been carried out. However these studies are limited to single-span rotor systems. A finite element model for a complex rotor-bearing system with coupled faults is presented. The dynamic responses of the rotor-bearing system are obtained by using the rotor dynamics theory and the modern nonlinear dynamics theory in connection with the continuation-shooting algorithm(commonly used for obtaining a periodic solution for a nonlinear system) for a range of rub-impact clearances and crack depths. The stability and Hopf instability of the periodic motion of the rotor-bearing system with coupled faults are analyzed by using the procedure described. The results indicate that the finite element method is an effective way for determining the dynamic responses of such complex rotor-bearing systems. Further for a rotor system with rub-impact and crack faults, the influences of the clearances are significantly different for different rub-impact stiffness. On the contrary, the influence of crack depths is rather small. The instability speeds of the rotor-bearing system increase due to the presence of the crack fault. The results obtained using the new finite element model, presented for computation and analysis of dynamic responses of the rotor-bearing systems with coupled faults, are in accordance with measurements in experiment. The formulations given can be used for diagnosis of faults, vibration control, and safe and stable operations of real rotor-bearing systems. |
| Starting Page | 785 |
| Ending Page | 792 |
| Page Count | 8 |
| File Format | |
| ISSN | 10009345 |
| Journal | Chinese Journal of Mechanical Engineering |
| Volume Number | 27 |
| Issue Number | 4 |
| e-ISSN | 21928258 |
| Language | English |
| Publisher | Chinese Mechanical Engineering Society |
| Publisher Date | 2014-08-01 |
| Publisher Place | Beijing |
| Access Restriction | Subscribed |
| Subject Keyword | rotor-bearing system rub-impact crack dynamic characteristic instability Mechanical Engineering Theoretical and Applied Mechanics Manufacturing, Machines, Tools Engineering Thermodynamics, Heat and Mass Transfer Power Electronics, Electrical Machines and Networks Electronics and Microelectronics, Instrumentation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Industrial and Manufacturing Engineering Mechanical Engineering |
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