Abstract
A finite element model is used to analyze the residual stress distribution around a cold expanded hole in a TC4 plate with various values of the edge distance ratio. The fatigue life of cold expanded hole is predicted using two models based on the critical plane approaches: SWT model and WB model. The predicted values are also compared with experimental results. The results show that the WB model achieves a better accuracy for cold expanded holes. When the edge distance ratio decreases, the residual tangential compressive stress and fatigue life of a cold expanded holes decrease.
Original language | English |
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Pages (from-to) | 130-137 |
Number of pages | 8 |
Journal | Engineering Fracture Mechanics |
Volume | 109 |
DOIs | |
State | Published - Sep 2013 |
Keywords
- Critical plane approach
- Edge distance ratio
- Residual stress
- Split-sleeve cold expanded holes
- TC4 titanium alloy plate