Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence
The dynamic characteristics of the combustor rotor in a turboshaft engine are inevitably affected by temperature. In this combined rotor system, complex curvic couplings interfaces are often involved, leading to discontinuous characteristics in the thermal conduction process. Previous rotor modeling...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024020966 |
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| author | Yijun Yin Xing Heng Haibiao Zhang Ailun Wang |
| author_facet | Yijun Yin Xing Heng Haibiao Zhang Ailun Wang |
| author_sort | Yijun Yin |
| collection | DOAJ |
| description | The dynamic characteristics of the combustor rotor in a turboshaft engine are inevitably affected by temperature. In this combined rotor system, complex curvic couplings interfaces are often involved, leading to discontinuous characteristics in the thermal conduction process. Previous rotor modeling methods do not account for structural discontinuities, particularly the influence of thermal contact resistance at the interface, which poses challenges in accurately constructing the temperature field of rotor model. Aiming at the issues, this paper integrates the finite element method and relies on a curvic couplings geometry model that incorporates rough conical interfaces. Innovatively, it proposes a method for analyzing the thermal contact resistance of the curvic couplings interfaces. Subsequently, a new approach considering the thermal contact resistance of the interface is established for the temperature field of the combined rotor system. And the influence of the temperature field on the natural frequency and rubbing faults of the combined rotor system is studied. Finally experimental verification confirms the rationality and effectiveness of the theoretical method. The results show that with the increase of temperature, the resonance frequency of the combustor rotor system decreases, the amplitude under the rub-impact excitation increases, and the amplitude at the gas turbine disk is the maximum. These methods and conclusions provide a reference for the design research and engineering application of combustor rotor system under temperature field influence. |
| format | Article |
| id | doaj-art-25344d5433454160b237c38c5e26d4d6 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-25344d5433454160b237c38c5e26d4d62025-01-12T05:25:37ZengElsevierResults in Engineering2590-12302025-03-0125103853Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influenceYijun Yin0Xing Heng1Haibiao Zhang2Ailun Wang3Light Alloy Research Institute, Central South University, Changsha 410083, PR China; College of Mechanical and Electrical Engineering, Central South University, Changsha, 410114, PR ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha, 410114, PR ChinaCollege of Mechanical and Electrical Engineering, Central South University, Changsha, 410114, PR China; AECC Hunan Aviation Powerplant Research Institute, Zhuzhou, 412002, PR ChinaLight Alloy Research Institute, Central South University, Changsha 410083, PR China; College of Mechanical and Electrical Engineering, Central South University, Changsha, 410114, PR China; Corresponding author.The dynamic characteristics of the combustor rotor in a turboshaft engine are inevitably affected by temperature. In this combined rotor system, complex curvic couplings interfaces are often involved, leading to discontinuous characteristics in the thermal conduction process. Previous rotor modeling methods do not account for structural discontinuities, particularly the influence of thermal contact resistance at the interface, which poses challenges in accurately constructing the temperature field of rotor model. Aiming at the issues, this paper integrates the finite element method and relies on a curvic couplings geometry model that incorporates rough conical interfaces. Innovatively, it proposes a method for analyzing the thermal contact resistance of the curvic couplings interfaces. Subsequently, a new approach considering the thermal contact resistance of the interface is established for the temperature field of the combined rotor system. And the influence of the temperature field on the natural frequency and rubbing faults of the combined rotor system is studied. Finally experimental verification confirms the rationality and effectiveness of the theoretical method. The results show that with the increase of temperature, the resonance frequency of the combustor rotor system decreases, the amplitude under the rub-impact excitation increases, and the amplitude at the gas turbine disk is the maximum. These methods and conclusions provide a reference for the design research and engineering application of combustor rotor system under temperature field influence.http://www.sciencedirect.com/science/article/pii/S2590123024020966Combustor rotorThermal contact resistanceCurvic couplings |
| spellingShingle | Yijun Yin Xing Heng Haibiao Zhang Ailun Wang Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence Results in Engineering Combustor rotor Thermal contact resistance Curvic couplings |
| title | Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence |
| title_full | Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence |
| title_fullStr | Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence |
| title_full_unstemmed | Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence |
| title_short | Modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence |
| title_sort | modeling method and dynamic analysis of turboshaft engine combustor rotor with curvic couplings considering thermal contact resistance under temperature field influence |
| topic | Combustor rotor Thermal contact resistance Curvic couplings |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024020966 |
| work_keys_str_mv | AT yijunyin modelingmethodanddynamicanalysisofturboshaftenginecombustorrotorwithcurviccouplingsconsideringthermalcontactresistanceundertemperaturefieldinfluence AT xingheng modelingmethodanddynamicanalysisofturboshaftenginecombustorrotorwithcurviccouplingsconsideringthermalcontactresistanceundertemperaturefieldinfluence AT haibiaozhang modelingmethodanddynamicanalysisofturboshaftenginecombustorrotorwithcurviccouplingsconsideringthermalcontactresistanceundertemperaturefieldinfluence AT ailunwang modelingmethodanddynamicanalysisofturboshaftenginecombustorrotorwithcurviccouplingsconsideringthermalcontactresistanceundertemperaturefieldinfluence |