Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system
The misalignment of the dual-rotor system for the aero-engine will lead to abnormal increase of the vibration which results in the rotor-stator rubbing and affects the safty and stability of the rotor operation.The dual-rotor system was taken as the research object.Considering the combination misali...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2025-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.01.001 |
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| _version_ | 1832586345519775744 |
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| author | YAO Xia NAN Guofang LI Yao QIU Xuewen |
| author_facet | YAO Xia NAN Guofang LI Yao QIU Xuewen |
| author_sort | YAO Xia |
| collection | DOAJ |
| description | The misalignment of the dual-rotor system for the aero-engine will lead to abnormal increase of the vibration which results in the rotor-stator rubbing and affects the safty and stability of the rotor operation.The dual-rotor system was taken as the research object.Considering the combination misalignment-rubbing fault, the dynamic model of the rotor system is established based on the lumped mass method.The differential equation of the system motion was established according to the Lagrange equation, and the Range-Kutta method was used to solve it.The influence mechanism of the key parameters such as the speed, the misalignment angle and the coupling misalignment on the nonlinear dynamic characteristics of the system was studied.The results show that the system presents complex dynamic characteristics such as periodic, multi-periodic, quasi-periodic and chaotic motion with the increase of the rotor’s speed.When the speed is in the range of 1 500-2 200 rad/s, the system switches between periodic 2 motion and chaotic state through multiple paroxysmal bifurcations and paroxysmal inverted bifurcations.There are nonlinear phenomena such as jump in the bifurcation diagram of the vibration response with the change of the parallel misalignment of the coupling.As the misalignment angle of the bearing increases, the chaotic interval of the high speed decreases, and the stable periodic motion interval increases. |
| format | Article |
| id | doaj-art-7a92c06f23de4d2e87098a72522305f4 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-7a92c06f23de4d2e87098a72522305f42025-01-25T19:01:14ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692025-01-014711181419917Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor systemYAO XiaNAN GuofangLI YaoQIU XuewenThe misalignment of the dual-rotor system for the aero-engine will lead to abnormal increase of the vibration which results in the rotor-stator rubbing and affects the safty and stability of the rotor operation.The dual-rotor system was taken as the research object.Considering the combination misalignment-rubbing fault, the dynamic model of the rotor system is established based on the lumped mass method.The differential equation of the system motion was established according to the Lagrange equation, and the Range-Kutta method was used to solve it.The influence mechanism of the key parameters such as the speed, the misalignment angle and the coupling misalignment on the nonlinear dynamic characteristics of the system was studied.The results show that the system presents complex dynamic characteristics such as periodic, multi-periodic, quasi-periodic and chaotic motion with the increase of the rotor’s speed.When the speed is in the range of 1 500-2 200 rad/s, the system switches between periodic 2 motion and chaotic state through multiple paroxysmal bifurcations and paroxysmal inverted bifurcations.There are nonlinear phenomena such as jump in the bifurcation diagram of the vibration response with the change of the parallel misalignment of the coupling.As the misalignment angle of the bearing increases, the chaotic interval of the high speed decreases, and the stable periodic motion interval increases.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.01.001Bearing misalignmentCoupling misalignmentRubbingCoupling faultNonlinear |
| spellingShingle | YAO Xia NAN Guofang LI Yao QIU Xuewen Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system Jixie qiangdu Bearing misalignment Coupling misalignment Rubbing Coupling fault Nonlinear |
| title | Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system |
| title_full | Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system |
| title_fullStr | Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system |
| title_full_unstemmed | Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system |
| title_short | Study on dynamics characteristic on combination misalignment and rubbing of the dual-rotor system |
| title_sort | study on dynamics characteristic on combination misalignment and rubbing of the dual rotor system |
| topic | Bearing misalignment Coupling misalignment Rubbing Coupling fault Nonlinear |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.01.001 |
| work_keys_str_mv | AT yaoxia studyondynamicscharacteristiconcombinationmisalignmentandrubbingofthedualrotorsystem AT nanguofang studyondynamicscharacteristiconcombinationmisalignmentandrubbingofthedualrotorsystem AT liyao studyondynamicscharacteristiconcombinationmisalignmentandrubbingofthedualrotorsystem AT qiuxuewen studyondynamicscharacteristiconcombinationmisalignmentandrubbingofthedualrotorsystem |