Volume 37, Number 4, August 2019
|Page(s)||744 - 750|
|Published online||23 September 2019|
Prediction Method and Verification of Fatigue Life for a Turbine Disk with Bolt Hole
School of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 AECC Sichuan Gas Turbine Establishment, Chengdu 610500, China
In order to improve the fatigue life prediction accuracy of FGH96 material for turbine engine at higher stress gradient notch, such as bolt holes, the new mean stress formula is used in this paper, the effect of stress gradient and size effect are considered at the same time, Fatigue test of FGH96 material inter-stage disc simulation test piece is done, and the parameters in the life prediction equation of the model are fitted. Further study on fatigue test of FGH96 material turbine pin bolt hole simulation unit is done, and test results is compared with the forecast results. The result shows that, the improved fatigue life prediction method has higher accuracy, and the validity of the method is proved.
Key words: FGH96 material / turbine disk / bolt hole / average stress / parameter fitting / life prediction / fatigue test / simulation
关键字 : FGH96 / 涡轮盘 / 螺栓孔 / 平均应力 / 参数拟合 / 寿命预测 / 疲劳试验 / 模拟
© 2019 Journal of Northwestern Polytechnical University. All rights reserved.
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