| 某型发动机第2级涡轮叶片低循环疲劳寿命分析 |
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| 引用本文： | 刘存,孙志刚,胡绪腾,宋迎东.某型发动机第2级涡轮叶片低循环疲劳寿命分析[J].航空发动机,2009,35(2):30-33. |
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| 作者姓名： | 刘存 孙志刚 胡绪腾 宋迎东 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,南京,210016 |
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| 摘 要： | 对改型后的某型发动机第2级涡轮叶片进行了热弹性有限元应力分析，结果表明在发动机各功率状态下，第2级涡轮叶片始终处于弹性应力范围，最大应力始终位于叶片和轮盘的交界部位；采用EGD-3应力标准中的应力疲劳分析方法，分别按假设的最好和最差的S-N曲线，估算了第2级涡轮叶片的低循环飞行小时寿命。
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| 关 键 词： | 航空发动机 涡轮叶片 热弹性有限元分析 低循环疲劳 寿命预测 |
Analysis of Low Cycle Fatigue Life for Second-stage Turbine Blade of an Aeroengine |
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| Authors: | LIU Cun SUN Zhi-gang HU Xu-teng SONG Ying-dong |
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| Institution: | College of Energy and Power Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | The thermoelastic finite element analysis of the second-stage turbine blade of a derivative engine was performed. The results show that the stress level of turbine blade is within elastic stress range and the maximum stress position always locates at the interface between blade and disk with the various power rating. The flight hour life of low cycle fatigue of the turbine blade is estimated by using the stress fatigue analysis method from EGD-3 stress standard in accordance with the best and the worst assu... |
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| Keywords: | aeroengine turbine blade thermoelastic finite element analysis low cycle fatigue life prediction |
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