Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault
This paper investigated the nonlinear vibrations of an uncertain overhung rotor system with rub-impact fault. As the clearance of the rotor and stator is getting smaller, contact between them often occurs at high rotation speeds. Meanwhile, inherent uncertainties in the rubbing can be introduced for...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/22/4365 |
| _version_ | 1797999296534020096 |
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| author | Chao Fu Dong Zhen Yongfeng Yang Fengshou Gu Andrew Ball |
| author_facet | Chao Fu Dong Zhen Yongfeng Yang Fengshou Gu Andrew Ball |
| author_sort | Chao Fu |
| collection | DOAJ |
| description | This paper investigated the nonlinear vibrations of an uncertain overhung rotor system with rub-impact fault. As the clearance of the rotor and stator is getting smaller, contact between them often occurs at high rotation speeds. Meanwhile, inherent uncertainties in the rubbing can be introduced for a variety of reasons, and they are typically restricted to small-sample variables. It is important to gain a robust understanding of the dynamics of such a system under non-probabilistic uncertainties. A non-intrusive uncertainty quantification scheme, coupled with the Runge-Kutta method, was used to study the effects of the rub-impact related interval uncertainties on the dynamical response individually and simultaneously, including the uncertainties in the contact stiffness, clearance, and friction coefficient. Moreover, the numerical validation of the developed analysis method was verified through comparisons with the scanning approach. The results obtained provide some guidance for investigating the uncertain dynamics of rubbing rotors and diagnosing the rub-impact fault under non-random uncertainty. |
| first_indexed | 2024-04-11T11:02:24Z |
| format | Article |
| id | doaj.art-e372f4325ea7481c997cdae6af53c2f4 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T11:02:24Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e372f4325ea7481c997cdae6af53c2f42022-12-22T04:28:31ZengMDPI AGEnergies1996-10732019-11-011222436510.3390/en12224365en12224365Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing FaultChao Fu0Dong Zhen1Yongfeng Yang2Fengshou Gu3Andrew Ball4Centre for Efficiency and Performance Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UKTianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles, School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, ChinaInstitute of Vibration Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaCentre for Efficiency and Performance Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UKCentre for Efficiency and Performance Engineering, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UKThis paper investigated the nonlinear vibrations of an uncertain overhung rotor system with rub-impact fault. As the clearance of the rotor and stator is getting smaller, contact between them often occurs at high rotation speeds. Meanwhile, inherent uncertainties in the rubbing can be introduced for a variety of reasons, and they are typically restricted to small-sample variables. It is important to gain a robust understanding of the dynamics of such a system under non-probabilistic uncertainties. A non-intrusive uncertainty quantification scheme, coupled with the Runge-Kutta method, was used to study the effects of the rub-impact related interval uncertainties on the dynamical response individually and simultaneously, including the uncertainties in the contact stiffness, clearance, and friction coefficient. Moreover, the numerical validation of the developed analysis method was verified through comparisons with the scanning approach. The results obtained provide some guidance for investigating the uncertain dynamics of rubbing rotors and diagnosing the rub-impact fault under non-random uncertainty.https://www.mdpi.com/1996-1073/12/22/4365rubbing faultrotor systembounded uncertaintydynamic responsemeta-modeling |
| spellingShingle | Chao Fu Dong Zhen Yongfeng Yang Fengshou Gu Andrew Ball Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault Energies rubbing fault rotor system bounded uncertainty dynamic response meta-modeling |
| title | Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault |
| title_full | Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault |
| title_fullStr | Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault |
| title_full_unstemmed | Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault |
| title_short | Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault |
| title_sort | effects of bounded uncertainties on the dynamic characteristics of an overhung rotor system with rubbing fault |
| topic | rubbing fault rotor system bounded uncertainty dynamic response meta-modeling |
| url | https://www.mdpi.com/1996-1073/12/22/4365 |
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