Dynamic Characteristics of Air Cycle Machine Rotor System
Parameters optimization in the critical speed region has the important influence on operational stability of an air cycle machine. Effects of bearing stiffness and unbalanced exciting force on critical speed and response characteristics are investigated by the modal method and harmonic response anal...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/1257274 |
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| _version_ | 1832563983237775360 |
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| author | Dongjiang Han Long Hao Jinfu Yang |
| author_facet | Dongjiang Han Long Hao Jinfu Yang |
| author_sort | Dongjiang Han |
| collection | DOAJ |
| description | Parameters optimization in the critical speed region has the important influence on operational stability of an air cycle machine. Effects of bearing stiffness and unbalanced exciting force on critical speed and response characteristics are investigated by the modal method and harmonic response analysis. Resonance separation phenomenon in the critical speed region is analyzed in detail. When difference exists in the phase of unbalanced exciting force, resonance separation appears in the conical whirling speed region. The characteristics after resonance separation are closely related to the phase difference value and amplitude of unbalanced exciting force. The paper provides theoretical and experimental foundations for resonance separation analysis and also provides data support for dynamic balance and dynamic design of the rotor system. |
| format | Article |
| id | doaj-art-4813da34b3114ccb814a4c5f40db96fd |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-4813da34b3114ccb814a4c5f40db96fd2025-02-03T01:12:08ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/12572741257274Dynamic Characteristics of Air Cycle Machine Rotor SystemDongjiang Han0Long Hao1Jinfu Yang2Institute of Engineering Thermophysics, Chinese Academy of Sciences, 11 Beisihuanxi Road, 100190 Beijing, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, 11 Beisihuanxi Road, 100190 Beijing, ChinaInstitute of Engineering Thermophysics, Chinese Academy of Sciences, 11 Beisihuanxi Road, 100190 Beijing, ChinaParameters optimization in the critical speed region has the important influence on operational stability of an air cycle machine. Effects of bearing stiffness and unbalanced exciting force on critical speed and response characteristics are investigated by the modal method and harmonic response analysis. Resonance separation phenomenon in the critical speed region is analyzed in detail. When difference exists in the phase of unbalanced exciting force, resonance separation appears in the conical whirling speed region. The characteristics after resonance separation are closely related to the phase difference value and amplitude of unbalanced exciting force. The paper provides theoretical and experimental foundations for resonance separation analysis and also provides data support for dynamic balance and dynamic design of the rotor system.http://dx.doi.org/10.1155/2018/1257274 |
| spellingShingle | Dongjiang Han Long Hao Jinfu Yang Dynamic Characteristics of Air Cycle Machine Rotor System Shock and Vibration |
| title | Dynamic Characteristics of Air Cycle Machine Rotor System |
| title_full | Dynamic Characteristics of Air Cycle Machine Rotor System |
| title_fullStr | Dynamic Characteristics of Air Cycle Machine Rotor System |
| title_full_unstemmed | Dynamic Characteristics of Air Cycle Machine Rotor System |
| title_short | Dynamic Characteristics of Air Cycle Machine Rotor System |
| title_sort | dynamic characteristics of air cycle machine rotor system |
| url | http://dx.doi.org/10.1155/2018/1257274 |
| work_keys_str_mv | AT dongjianghan dynamiccharacteristicsofaircyclemachinerotorsystem AT longhao dynamiccharacteristicsofaircyclemachinerotorsystem AT jinfuyang dynamiccharacteristicsofaircyclemachinerotorsystem |