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

Guo Bin Zhang; Huang Yuan

doi:10.4028/www.scientific.net/AMR.321.171

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 321Numerical Simulation of Creep-Fatigue Crack Growth...

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

Abstract:

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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Periodical:

Advanced Materials Research (Volume 321)

Pages:

171-175

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.321.171

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Online since:

August 2011

Authors:

Guo Bin Zhang, Huang Yuan

Keywords:

Cohesive Zone Model (CZM), Creep Fatigue Crack Growth, Extended Finite Element Method (XFEM), Nickel-Based Superalloy

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