Computational Analysis of Fatigue Crack Propagation at Elevated Temperature for IN718

Guo Bin Zhang; Huang Yuan

doi:10.4028/www.scientific.net/AMM.110-116.29

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 110-116Computational Analysis of Fatigue Crack...

Computational Analysis of Fatigue Crack Propagation at Elevated Temperature for IN718

Abstract:

Creep damage is an important failure factor of high-temperature alloy. The fatigue crack growth under elevated temperature of the material is investigated for life prediction. In this paper, the numerical simulation of the crack propagation in nickel-based super alloy, IN718, was presented. A modified creep damage model was employed to accumulate the creep damage under cyclic loading conditions. The numerical results exhibit a reasonable agreement in the comparison with the experimental data. The cohesive zone approach, combining with the extended finite element method, has the ability to simulate the creep-fatigue crack propagation even for more complex loading conditions and specimen geometries.

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Periodical:

Applied Mechanics and Materials (Volumes 110-116)

Pages:

29-32

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.110-116.29

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Online since:

October 2011

Authors:

Guo Bin Zhang, Huang Yuan

Keywords:

Cohesive Zone Model (CZM), Creep Damage, Fatigue Crack Growth (FCG), IN718, X-FEM

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