Fatigue Crack Growth Prediction of Elliptical Corner Crack Using 3D FEM

M.H. Gozin; M. Aghaie-Khafri

doi:10.4028/www.scientific.net/AMM.248.469

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 248Fatigue Crack Growth Prediction of Elliptical...

Fatigue Crack Growth Prediction of Elliptical Corner Crack Using 3D FEM

Abstract:

Plasticity induced crack closure (PICC) simulation using finite element analyses has been concerned by many researchers. In the present investigation elliptical corner fatigue crack growth from a hole was predicted using PICC method. An elastic-plastic finite element model is built with a suitably refined mesh and time-dependent remote tractions are applied to simulate cyclic loading. In a 3D geometry the crack opening value will vary along the crack front. For simplicity this shape evolution is neglected and the crack front is extended uniformly. Predicted fatigue life using crack closure method for elliptical corner crack is in good agreement with the experimental data. The results obtained highlighted the sensitivity of crack closure method to the opening stress intensity values.

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Periodical:

Applied Mechanics and Materials (Volume 248)

Pages:

469-474

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.248.469

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Online since:

December 2012

Authors:

M.H. Gozin, M. Aghaie-Khafri

Keywords:

3D FEM, Crack Closure, Elliptical Crack, Fatigue Crack Growth (FCG), Fatigue Life

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