A fracture mechanics based approach for the fretting fatigue of aircraft engine fan dovetail attachments

被引：40
作者：
Mangardich, Dikran [1 ,2 ]
Abrari, Farid [2 ]
Fawaz, Zouheir [1 ]
机构：
[1] Ryerson Univ, Dept Aerosp Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada
[2] Pratt & Whitney Canada, 1801 Courtneypk Dr E, Mississauga, ON L5T 1J3, Canada
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 129卷
关键词：
Crack shape; Fretting; Fatigue crack growth; Fractography; Low cycle fatigue; High cycle fatigue; CRACK-GROWTH; FINITE-ELEMENT; COMPRESSOR BLADE; LIFE PREDICTION; CRITICAL-PLANE; SIMULATION; NUCLEATION; BEHAVIOR; WEAR; SLIP;
D O I：
10.1016/j.ijfatigue.2019.105213
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fretting fatigue and crack propagation of an aircraft engine fan dovetail attachment made of Ti-6Al-4V alloy has been numerically modeled and compared with controlled spin test results. The study suggests the fretting-specific modified SWT parameter predicts the nucleation location of the crack more accurately compared to the plain fatigue SWT parameter. The fretting model uses a prescribed coefficient of friction value of 0.7, obtained through calibration of 3D crack growth simulations with the fractured components in regards to crack trajectory, aspect ratio, shape, and propagation life.
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页数：12
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