| 某型发动机涡轮盘销钉孔结构分析与寿命评估 |
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| 引用本文： | 李伟,董立伟,蔡向晖,赵福星,刘东.某型发动机涡轮盘销钉孔结构分析与寿命评估[J].航空动力学报,2009,24(8):1699-1706. |
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| 作者姓名： | 李伟 董立伟 蔡向晖 赵福星 刘东 |
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| 作者单位： | 北京航空航天大学能源与动力工程学院;北京航空工程技术研究中心; |
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| 摘 要： | 利用有限元方法计算了某型发动机涡轮盘径向销钉孔的应力应变分布,分析了不同销钉数目、孔销之间的不同摩擦系数和涡轮盘是否施加扭矩对销钉孔周边应力的影响,发现了前期试验状况与实际使用的差异.利用拉伸应变能寿命预测公式进行了寿命评估,与试验有较好的一致性.有限元计算及试验结果说明了涡轮盘加扭疲劳试验的必要性,为某型发动机高压涡轮盘的延寿工作提供了依据.
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| 关 键 词： | 高压涡轮盘 销钉子 有限元方法 结构分析 应变能寿命计算公式 |
| 收稿时间： | 1/18/2009 9:37:56 PM |
| 修稿时间： | 8/2/2009 4:42:02 PM |
Structure analysis and life evaluation of the pin holes in a turbine disc of a type of aero-engine |
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| LI Wei,DONG Li-wei,CAI Xiang-hui,ZHAO Fu-xing and LIU Dong.Structure analysis and life evaluation of the pin holes in a turbine disc of a type of aero-engine[J].Journal of Aerospace Power,2009,24(8):1699-1706. |
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| Authors: | LI Wei DONG Li-wei CAI Xiang-hui ZHAO Fu-xing and LIU Dong |
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| Institution: | 1.School of Jet Propulsion;Beijing University of Aeronautics and Astronautics;Beijing 100191;China;2.Bejing Aeronautical Engineering Technical Research Center;Beijing 100076;China |
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| Abstract: | The stress and strain distribution at the radial pin holes in a turbine disc of an aero-engine was analyzed using finite element analysis(FEA) method.The influence of some factors on the stress distribution adjacent the pin hole was discussed,such as the numbers of the pins,the friction coefficient between hole and pin,the presentation of torque on the disc.The analysis revealed the difference between earlier test and actual operation.The fatigue life was estimated with the formula of strain energy and the ... |
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| Keywords: | high pressure turbine disk the pin holes finite element method structure analysis life calculation formula of strain energy |
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