Extended finite element modeling of fatigue crack growth microstructural mechanisms in alloys with secondary/reinforcing phases: model development and validation

2020 ◽  
Author(s):  
Anthony G. Spangenberger ◽  
Diana A. Lados
Keyword(s):  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Finite Element Modeling ◽  
Crack Growth ◽  
Model Development ◽  
Extended Finite Element ◽  
Element Modeling ◽  
Development And Validation ◽  
Secondary Reinforcing

Numerical Simulation of Creep-Fatigue Crack Growth for Nickel-Based Super Alloy with Extended Finite Element Method

2011 ◽  
Vol 321 ◽  
pp. 171-175 ◽  
Author(s):  
Guo Bin Zhang ◽  
Huang Yuan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Extended Finite Element Method ◽  
Creep Damage ◽  
Extended Finite Element ◽  
Super Alloy ◽  
Element Method

Extended finite element method is widely used to simulate the discontinuity problems, e.g. fatigue crack growth. This paper mainly analyzes the fatigue crack propagation under elevated temperature in nickel-based super alloy with extended finite element method. Cohesive zone model is used to describe the mechanical behavior around the crack tip. A modified creep damage model is introduced. Fatigue damage and creep damage are accumulated in a linear relationship. And the results produced by computational code are presented and draw a comparison with experimental observation.

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