Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault
Rotor rub-impact has a great influence on the stability and safety of a rotating machine. This study develops a dynamic model of a two-span rotor-bearing system with rubbing faults, and numerical simulation is carried out. Moreover, frictional screws are used to simulate a rubbing state by establish...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/6309809 |
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| _version_ | 1832549584284418048 |
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| author | Rui Zhu Guang-chao Wang Qing-peng Han An-lei Zhao Jian-xing Ren Xin Xia |
| author_facet | Rui Zhu Guang-chao Wang Qing-peng Han An-lei Zhao Jian-xing Ren Xin Xia |
| author_sort | Rui Zhu |
| collection | DOAJ |
| description | Rotor rub-impact has a great influence on the stability and safety of a rotating machine. This study develops a dynamic model of a two-span rotor-bearing system with rubbing faults, and numerical simulation is carried out. Moreover, frictional screws are used to simulate a rubbing state by establishing a set of experimental devices that can simulate rotor-stator friction in the rotor system. Through the experimental platform and its analysis system, the rubbing experiment was conducted, and the vibration of the rotor-bearing system before and after the critical speed is observed. Rotors running under normal condition, local slight rubbing, and severe rubbing throughout the entire cycle are simulated. Dynamic trajectories, frequency spectrum diagrams, chart of axis track, and Poincare maps are used to analyze the features of the rotor-bearing system with rub-impact faults under various parameters. The vibration characteristics of rub impact are obtained. Results show that the dynamic characteristics of the rotor-bearing system are affected by the change in velocity and degree of impact friction. The findings are helpful in further understanding the dynamic characteristics of the rub-impact fault of the two-span rotor-bearing system and provide reference for fault diagnosis. |
| format | Article |
| id | doaj-art-76838a6c189d4b44ae76c2adc2f70b40 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-76838a6c189d4b44ae76c2adc2f70b402025-02-03T06:10:58ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/63098096309809Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact FaultRui Zhu0Guang-chao Wang1Qing-peng Han2An-lei Zhao3Jian-xing Ren4Xin Xia5Shanghai University of Electric Power, 2588 Changyang Road, Yangpu District, Shanghai, ChinaShanghai University of Electric Power, 2588 Changyang Road, Yangpu District, Shanghai, ChinaShanghai University of Electric Power, 2588 Changyang Road, Yangpu District, Shanghai, ChinaShanghai University of Electric Power, 2588 Changyang Road, Yangpu District, Shanghai, ChinaShanghai University of Electric Power, 2588 Changyang Road, Yangpu District, Shanghai, ChinaShanghai University of Electric Power, 2588 Changyang Road, Yangpu District, Shanghai, ChinaRotor rub-impact has a great influence on the stability and safety of a rotating machine. This study develops a dynamic model of a two-span rotor-bearing system with rubbing faults, and numerical simulation is carried out. Moreover, frictional screws are used to simulate a rubbing state by establishing a set of experimental devices that can simulate rotor-stator friction in the rotor system. Through the experimental platform and its analysis system, the rubbing experiment was conducted, and the vibration of the rotor-bearing system before and after the critical speed is observed. Rotors running under normal condition, local slight rubbing, and severe rubbing throughout the entire cycle are simulated. Dynamic trajectories, frequency spectrum diagrams, chart of axis track, and Poincare maps are used to analyze the features of the rotor-bearing system with rub-impact faults under various parameters. The vibration characteristics of rub impact are obtained. Results show that the dynamic characteristics of the rotor-bearing system are affected by the change in velocity and degree of impact friction. The findings are helpful in further understanding the dynamic characteristics of the rub-impact fault of the two-span rotor-bearing system and provide reference for fault diagnosis.http://dx.doi.org/10.1155/2019/6309809 |
| spellingShingle | Rui Zhu Guang-chao Wang Qing-peng Han An-lei Zhao Jian-xing Ren Xin Xia Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault Shock and Vibration |
| title | Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault |
| title_full | Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault |
| title_fullStr | Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault |
| title_full_unstemmed | Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault |
| title_short | Dynamic Characteristics and Experimental Research of a Two-Span Rotor-Bearing System with Rub-Impact Fault |
| title_sort | dynamic characteristics and experimental research of a two span rotor bearing system with rub impact fault |
| url | http://dx.doi.org/10.1155/2019/6309809 |
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