| 带冠和冷却小孔涡轮叶片振动特性分析 |
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| 引用本文： | 欧阳德,孔瑞莲,宋兆泓,于盛中,肖波.带冠和冷却小孔涡轮叶片振动特性分析[J].航空动力学报,1997,12(3):235-238,328. |
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| 作者姓名： | 欧阳德 孔瑞莲 宋兆泓 于盛中 肖波 |
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| 作者单位： | 北京航空航天大学，贵州航空发动机研究所 |
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| 摘 要： | 某发动机第一级涡轮叶片是带有矩形冠和９小孔冷却涡轮叶片，为分析该级叶片振动特性，建立了有限元模型，分析了小孔、均匀温度场和非均匀温度场下、叶冠边界条件等对振动特性的影响。同时，依据共振疲劳损伤寿命理论确定叶冠的最佳间隙值，来增加使用寿命。计算结果表明：在无真实的温度场时，考虑工作时的平均温度是有效的工程处理方法；小孔对叶片振动特性的影响是较微弱的。
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| 关 键 词： | 发动机 叶片振动 有限元 |
| 收稿时间： | 7/1/1996 12:00:00 AM |
| 修稿时间： | 1996/10/1 0:00:00 |
VIBRATION CHARACTERISTICS ANALYSIS FOR A SHROUDED TURBINE BLADE WITH AIR-COOLING HOLES |
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| Ou Yangde,Kong Ruilian,Song Zhaohong,Yu shengzhong and Xiao Bo.VIBRATION CHARACTERISTICS ANALYSIS FOR A SHROUDED TURBINE BLADE WITH AIR-COOLING HOLES[J].Journal of Aerospace Power,1997,12(3):235-238,328. |
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| Authors: | Ou Yangde Kong Ruilian Song Zhaohong Yu shengzhong and Xiao Bo |
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| Institution: | 4th Dept.Beijing University of Aeronautics and Astronautics, Beijing 100083;4th Dept.Beijing University of Aeronautics and Astronautics, Beijing 100083;4th Dept.Beijing University of Aeronautics and Astronautics, Beijing 100083;Guizhou Aeroengine Research Institute;Guizhou Aeroengine Research Institute |
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| Abstract: | A finite element model has been established for analyzing vibration characteristics of a shrouded turbine blade with air-cooling holes.The effects of uniform and nonuniform temperature distribution,holes and constraint conditons of the shrouds on the vibration characteristics are considered.According to the resonant fatigue-damage life theory,the optimum clearance between neighboring shrouds is determined to increase the service life.The results of the analysis show that the air-cooling holes have less,but the constraint conditions and temperature distributions have significant effect on natural frequencies of the blades. |
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| Keywords: | Engines Blade vibration Finite elements |
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