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| 再制造航空发动机涡轮盘LCF寿命预测 |
| Research on Low Cycle Fatigue Life Prediction of the Remanufactured Turbine Disk on Aero Engine |
| 投稿时间：2019-02-14 修订日期：2019-04-15 |
| DOI： |
| 中文关键词: 再制造涡轮盘 寿命修正系数 局部应力应变法 低周疲劳寿命预测 |
| 英文关键词: remanufactured turbine disk fatiguelife corrective factor local stress-strain method low cycle fatigue life prediction |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 针对缺乏航空发动机再制造涡轮盘低周疲劳(low cycle fatigue, LCF)参数数据，无法直接利用传统寿命预测方法进行再制造涡轮盘LCF寿命预测的现状，作者考虑疲劳极限与疲劳寿命的关系，提出利用再制造涡轮盘寿命修正系数，对通过有限元应力应变分析及局部应力应变法得到的寿命预测结果进行修正的方法，实现再制造涡轮盘寿命预测，最后将预测结果与相关实验结果进行对比，证明预测结果具有一定准确性。 |
| 英文摘要: |
| Due to the lack of low cycle fatigue(LCF) parameter data of aeroengine remanufactured turbine disk, it is impossible to predict the low cycle fatigue life of remanufactured turbine disk directly by using traditional life prediction method. Considering the relationship between fatigue limit and fatigue life, the author puts forward the life correction factor of remanufactured turbine disk, corrects the life prediction results obtained by finite element stress-strain analysis and local stress-strain method, and predicts the life of remanufactured turbine disk. Finally, the prediction results are compared with the relevant experimental results, which proves that the prediction results are accurate. |
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