Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture
Considering rotation-induced centrifugal stiffening, spin softening, and Coriolis effects, the reduced dynamic model of a rotating blade with a dovetail fixture is established in the ANSYS environment via the fixed-interface method for higher computational efficiency and lower memory consumption. Th...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Machines |
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| Online Access: | https://www.mdpi.com/2075-1702/11/6/643 |
| _version_ | 1827736684832227328 |
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| author | Xiaoyu Fan Wenchao Liang Jin Zeng Yang Yang Hui Ma Chenguang Fan Shunguo Fu |
| author_facet | Xiaoyu Fan Wenchao Liang Jin Zeng Yang Yang Hui Ma Chenguang Fan Shunguo Fu |
| author_sort | Xiaoyu Fan |
| collection | DOAJ |
| description | Considering rotation-induced centrifugal stiffening, spin softening, and Coriolis effects, the reduced dynamic model of a rotating blade with a dovetail fixture is established in the ANSYS environment via the fixed-interface method for higher computational efficiency and lower memory consumption. Then some parameters such as rotating speed, friction factor, and stator blade number affecting the nonlinear vibration responses of the system under the combined actions of aerodynamic force, centrifugal force, and gravity are elaborately discussed. The results show that: (1) the contact-induced nonlinearity between the tenon and the mortise mainly results in the frequency multiplications of the aerodynamic excitation frequency; (2) a larger friction factor results in a lower magnitude of contact pressure and a higher resonance frequency, while a larger stator blade number results in a lower magnitude of the uniform and continuous contact pressure distribution; (3) the excitation of the resonant mode caused by the aerodynamic force is primarily characterized by the first-order bending mode of the system. |
| first_indexed | 2024-03-11T02:13:50Z |
| format | Article |
| id | doaj.art-cfaadf16741c4bb9a0bb16bba88df8e9 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-11T02:13:50Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-cfaadf16741c4bb9a0bb16bba88df8e92023-11-18T11:21:01ZengMDPI AGMachines2075-17022023-06-0111664310.3390/machines11060643Dynamic Characteristics of a Rotating Blade with a Dovetail FixtureXiaoyu Fan0Wenchao Liang1Jin Zeng2Yang Yang3Hui Ma4Chenguang Fan5Shunguo Fu6Aero Engine Corporation of China, Beijing 100097, ChinaSchool of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, ChinaSchool of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaAECC Sichuan Gas Turbine Establishment, Mianyang 621000, ChinaConsidering rotation-induced centrifugal stiffening, spin softening, and Coriolis effects, the reduced dynamic model of a rotating blade with a dovetail fixture is established in the ANSYS environment via the fixed-interface method for higher computational efficiency and lower memory consumption. Then some parameters such as rotating speed, friction factor, and stator blade number affecting the nonlinear vibration responses of the system under the combined actions of aerodynamic force, centrifugal force, and gravity are elaborately discussed. The results show that: (1) the contact-induced nonlinearity between the tenon and the mortise mainly results in the frequency multiplications of the aerodynamic excitation frequency; (2) a larger friction factor results in a lower magnitude of contact pressure and a higher resonance frequency, while a larger stator blade number results in a lower magnitude of the uniform and continuous contact pressure distribution; (3) the excitation of the resonant mode caused by the aerodynamic force is primarily characterized by the first-order bending mode of the system.https://www.mdpi.com/2075-1702/11/6/643reduced dynamic modelrotating bladedovetail fixturefixed-interface methodaerodynamic forcenonlinear vibration responses |
| spellingShingle | Xiaoyu Fan Wenchao Liang Jin Zeng Yang Yang Hui Ma Chenguang Fan Shunguo Fu Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture Machines reduced dynamic model rotating blade dovetail fixture fixed-interface method aerodynamic force nonlinear vibration responses |
| title | Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture |
| title_full | Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture |
| title_fullStr | Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture |
| title_full_unstemmed | Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture |
| title_short | Dynamic Characteristics of a Rotating Blade with a Dovetail Fixture |
| title_sort | dynamic characteristics of a rotating blade with a dovetail fixture |
| topic | reduced dynamic model rotating blade dovetail fixture fixed-interface method aerodynamic force nonlinear vibration responses |
| url | https://www.mdpi.com/2075-1702/11/6/643 |
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