Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings
In order to analyse the system spatial vibration of compound biaxial and inter-shaft bearings during unbalanced excitation, the theory of rotor dynamics and bearing contact deformation are combined to establish a coupling system model of compound biaxial and inter-shaft bearings. Considering the mom...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2022/2718269 |
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| _version_ | 1832563473640325120 |
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| author | Kun Li Hongchang Ding Guohua Cao Han Hou |
| author_facet | Kun Li Hongchang Ding Guohua Cao Han Hou |
| author_sort | Kun Li |
| collection | DOAJ |
| description | In order to analyse the system spatial vibration of compound biaxial and inter-shaft bearings during unbalanced excitation, the theory of rotor dynamics and bearing contact deformation are combined to establish a coupling system model of compound biaxial and inter-shaft bearings. Considering the moment of inertia, gyro effect, and structural damping, a one-dimensional beam model is used to perform the MATLAB numerical calculation of the coupling system to obtain the modal characteristics of the system, and based on the ANSYS simulation analysis of the three-dimensional model, a modal test is used to obtain the system modal shape and test frequency response function to verify the rationality of the coupling system model. Based on the Runge-Kutta iterative method and Hamilton’s principle, the nonlinear amplitude-frequency response of the system is calculated while taking into account the influence of the compound biaxial eccentricity, as well as the stiffness and radial clearance of the inter-shaft bearing. The results show that the changes in the eccentricity of the compound biaxial and the structural parameters of the inter-shaft bearing cause the unbalanced excitation of the system, additional external load changes, and different coupled vibrations between the composite compound biaxial and inter-shaft bearings. Therefore, it is reasonable to match the structural parameters of the coupling system and improve the dynamic performance to avoid system resonance. |
| format | Article |
| id | doaj-art-10c4aea6fd7f4201aeb88b9bbdc78ca7 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-10c4aea6fd7f4201aeb88b9bbdc78ca72025-02-03T01:19:59ZengWileyShock and Vibration1875-92032022-01-01202210.1155/2022/2718269Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft BearingsKun Li0Hongchang Ding1Guohua Cao2Han Hou3School of Mechanical and Electric EngineeringSchool of Mechanical and Electric EngineeringSchool of Mechanical and Electric EngineeringSchool of Mechanical and Electric EngineeringIn order to analyse the system spatial vibration of compound biaxial and inter-shaft bearings during unbalanced excitation, the theory of rotor dynamics and bearing contact deformation are combined to establish a coupling system model of compound biaxial and inter-shaft bearings. Considering the moment of inertia, gyro effect, and structural damping, a one-dimensional beam model is used to perform the MATLAB numerical calculation of the coupling system to obtain the modal characteristics of the system, and based on the ANSYS simulation analysis of the three-dimensional model, a modal test is used to obtain the system modal shape and test frequency response function to verify the rationality of the coupling system model. Based on the Runge-Kutta iterative method and Hamilton’s principle, the nonlinear amplitude-frequency response of the system is calculated while taking into account the influence of the compound biaxial eccentricity, as well as the stiffness and radial clearance of the inter-shaft bearing. The results show that the changes in the eccentricity of the compound biaxial and the structural parameters of the inter-shaft bearing cause the unbalanced excitation of the system, additional external load changes, and different coupled vibrations between the composite compound biaxial and inter-shaft bearings. Therefore, it is reasonable to match the structural parameters of the coupling system and improve the dynamic performance to avoid system resonance.http://dx.doi.org/10.1155/2022/2718269 |
| spellingShingle | Kun Li Hongchang Ding Guohua Cao Han Hou Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings Shock and Vibration |
| title | Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings |
| title_full | Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings |
| title_fullStr | Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings |
| title_full_unstemmed | Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings |
| title_short | Vibration Characteristic Analysis of a Coupling System for Compound Biaxial and Inter-Shaft Bearings |
| title_sort | vibration characteristic analysis of a coupling system for compound biaxial and inter shaft bearings |
| url | http://dx.doi.org/10.1155/2022/2718269 |
| work_keys_str_mv | AT kunli vibrationcharacteristicanalysisofacouplingsystemforcompoundbiaxialandintershaftbearings AT hongchangding vibrationcharacteristicanalysisofacouplingsystemforcompoundbiaxialandintershaftbearings AT guohuacao vibrationcharacteristicanalysisofacouplingsystemforcompoundbiaxialandintershaftbearings AT hanhou vibrationcharacteristicanalysisofacouplingsystemforcompoundbiaxialandintershaftbearings |