Fatigue Crack Propagation of Nickel-Based Superalloy: Experiments and Simulations with Extended Finite Element Method
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Numerical simulation based on extended finite element method was employed to investigate the fatigue crack propagation of nickel-based superalloy at room temperature. Experimental tests on compact tension specimens have performed to obtain fatigue crack propagation parameters in Paris region. The extended finite element method has presented a new approach to solve the stress intensity factors and can effectively predict crack propagation without re-meshing at crack tip. The simulation results are in good accordance with experimental data in real 3D cases.
Keywordsextended finite element method fatigue crack propagation nickel-based superalloy stress intensity factor
This work was supported by the National Natural Science Research Foundation of China (Nos. 11327801, 11502151, 11572057), the Program for Changjiang Scholars and Innovative Research Team (No. IRT14R37), and Key Science and Technology Support Program of Sichuan Province (No. 2015JPT0001).
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