| 魏勇，陈晨，彭煜，侯宪勇，雷霄玉，付俊.航空发动机自由涡轮盘低循环疲劳寿命试验研究[J].航空发动机,2020,46(3):30-34 |
| 航空发动机自由涡轮盘低循环疲劳寿命试验研究 |
| Test Study on Low Cycle Fatigue Life of Aeroengine Free Turbine Disk |
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| DOI： |
| 中文关键词: 自由涡轮盘 低循环疲劳 预定安全寿命 航空发动机 |
| 英文关键词:free turbine disk low cycle fatigue predicted safe life aeroengine |
| 基金项目:航空动力基础研究项目资助 |
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| 摘要点击次数: 1521 |
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| 中文摘要: |
| 针对某型航空发动机适航取证项目要求，对该发动机自由涡轮盘开展寿命研究。综合考虑自由涡轮盘标准工作循环内
温度场和转速载荷，采用线弹性有限元应力分析法对轮盘进行应力分析，据此确定轮缘和盘心为轮盘应力水平及疲劳寿命的关键
考核部位；充分考虑试验器能力及试验过程的可监控性等因素，设计并开展了能够对该自由涡轮盘关键部位进行有效考核的试验
载荷系数为1 的试验器循环疲劳试验；根据试验结果对轮盘低循环疲劳寿命进行分析。结果表明：该自由涡轮盘的预定安全循环
寿命为6500 次。 |
| 英文摘要: |
| Based on the requirement of airworthiness certification project of a certain aeroengine，life study of the engine free turbine
disk was carried out. Considering the temperature field and rotational speed load in the standard working cycle of the free turbine disk，the
stress analysis of the turbine disk was carried out by the stress analysis method of linear elastic finite element，and the flange and disc
center were determined to be the key assessment sites for the stress level and fatigue life of the turbine disk. Considering the capability of
the tester and the controllability of the test process，the cyclic fatigue test of the tester with a load coefficient of 1 which can effectively
examine the key parts of the free turbine disk was designed and carried out. The low cycle fatigue life of the turbine disk was analysed
based on the test results. The results show that the predicted safe cycle life of the free turbine disk is 6500 cycles. |
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