Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle
To solve the problem of local high frequency vibration during test and operation for thin-walled tail nozzles of aero-engine, on the basis of mechanical vibration theory and finite element method, the vibration characteristics of the thin-walled tail nozzle were analyzed by the three-dimensional fin...
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| Format: | Article |
| Language: | English |
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Editorial Office of Journal of Taiyuan University of Technology
2022-03-01
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| Series: | Taiyuan Ligong Daxue xuebao |
| Subjects: | |
| Online Access: | https://tyutjournal.tyut.edu.cn/englishpaper/show-1680.html |
| _version_ | 1797208369944068096 |
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| author | Xiaoxia ZHENG Zhiqiang LI Wenhui LI Genwei Wang |
| author_facet | Xiaoxia ZHENG Zhiqiang LI Wenhui LI Genwei Wang |
| author_sort | Xiaoxia ZHENG |
| collection | DOAJ |
| description | To solve the problem of local high frequency vibration during test and operation for thin-walled tail nozzles of aero-engine, on the basis of mechanical vibration theory and finite element method, the vibration characteristics of the thin-walled tail nozzle were analyzed by the three-dimensional finite element simulation method, the low-order natural frequency, vibration mode, and relative vibration stress were obtained. On the basis of the working speed and related exciting factors, through the analysis of frequency margin and the drawing of Campbell diagram, the cause of vibration resonance was found out. By considering the structure and loading characteristics of the thin-walled tail nozzle, several improvement schemes were proposed to increase the natural frequency and avoid the low-order harmful resonance. Through simulation calculation and comparative analysis, according to practical engineering experience and the limitation of overall aerodynamic performance, the local truncation scheme was obtained as the optimal improvement scheme. The analysis showed that, the proposed optimal plan is a very effective method to improve the low-order natural frequency, which could not only improve the low-order natural frequency effectively and without weight increasing, but also have little effect on the overall aerodynamic performance. The results could provide theoretical basis and technical guidance for the design and structural optimization of large-size thin-walled components of aero-engines. |
| first_indexed | 2024-04-24T09:37:43Z |
| format | Article |
| id | doaj.art-80b0ad3cd2aa4e2e95a0bcd7b0782c59 |
| institution | Directory Open Access Journal |
| issn | 1007-9432 |
| language | English |
| last_indexed | 2024-04-24T09:37:43Z |
| publishDate | 2022-03-01 |
| publisher | Editorial Office of Journal of Taiyuan University of Technology |
| record_format | Article |
| series | Taiyuan Ligong Daxue xuebao |
| spelling | doaj.art-80b0ad3cd2aa4e2e95a0bcd7b0782c592024-04-15T08:53:28ZengEditorial Office of Journal of Taiyuan University of TechnologyTaiyuan Ligong Daxue xuebao1007-94322022-03-0153233033710.16355/j.cnki.issn1007-9432tyut.2022.02.0181007-9432(2022)02-0330-08Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail NozzleXiaoxia ZHENG0Zhiqiang LI1Wenhui LI2Genwei Wang3College of Aeronautics and Astronautics, Taiyuan University of Technology, Jinzhong 030600, ChinaCollege of Aeronautics and Astronautics, Taiyuan University of Technology, Jinzhong 030600, ChinaCollege of Aeronautics and Astronautics, Taiyuan University of Technology, Jinzhong 030600, ChinaCollege of Aeronautics and Astronautics, Taiyuan University of Technology, Jinzhong 030600, ChinaTo solve the problem of local high frequency vibration during test and operation for thin-walled tail nozzles of aero-engine, on the basis of mechanical vibration theory and finite element method, the vibration characteristics of the thin-walled tail nozzle were analyzed by the three-dimensional finite element simulation method, the low-order natural frequency, vibration mode, and relative vibration stress were obtained. On the basis of the working speed and related exciting factors, through the analysis of frequency margin and the drawing of Campbell diagram, the cause of vibration resonance was found out. By considering the structure and loading characteristics of the thin-walled tail nozzle, several improvement schemes were proposed to increase the natural frequency and avoid the low-order harmful resonance. Through simulation calculation and comparative analysis, according to practical engineering experience and the limitation of overall aerodynamic performance, the local truncation scheme was obtained as the optimal improvement scheme. The analysis showed that, the proposed optimal plan is a very effective method to improve the low-order natural frequency, which could not only improve the low-order natural frequency effectively and without weight increasing, but also have little effect on the overall aerodynamic performance. The results could provide theoretical basis and technical guidance for the design and structural optimization of large-size thin-walled components of aero-engines.https://tyutjournal.tyut.edu.cn/englishpaper/show-1680.htmlaero-enginethin-walled tail nozzlethree-dimensional finite element analysisvibration characteristic analysisnatural frequencyexciting factorsimprovement scheme |
| spellingShingle | Xiaoxia ZHENG Zhiqiang LI Wenhui LI Genwei Wang Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle Taiyuan Ligong Daxue xuebao aero-engine thin-walled tail nozzle three-dimensional finite element analysis vibration characteristic analysis natural frequency exciting factors improvement scheme |
| title | Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle |
| title_full | Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle |
| title_fullStr | Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle |
| title_full_unstemmed | Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle |
| title_short | Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle |
| title_sort | vibration mechanism analysis and structure improvement of engine thin walled tail nozzle |
| topic | aero-engine thin-walled tail nozzle three-dimensional finite element analysis vibration characteristic analysis natural frequency exciting factors improvement scheme |
| url | https://tyutjournal.tyut.edu.cn/englishpaper/show-1680.html |
| work_keys_str_mv | AT xiaoxiazheng vibrationmechanismanalysisandstructureimprovementofenginethinwalledtailnozzle AT zhiqiangli vibrationmechanismanalysisandstructureimprovementofenginethinwalledtailnozzle AT wenhuili vibrationmechanismanalysisandstructureimprovementofenginethinwalledtailnozzle AT genweiwang vibrationmechanismanalysisandstructureimprovementofenginethinwalledtailnozzle |