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The Evaluation of the Effects of the Maximum Stress Intensity Factor for Fatigue Crack Opening Behavior by Finite Element Analysis

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Abstract:

The cyclic crack tip opening displacement is well related to fatigue crack opening behavior. In this paper, we investigate the effect of the maximum stress intensity factor, Kmax, when predicting fatigue crack opening behavior using the cyclic crack tip opening displacement obtained from FEA. The commercial finite element code, ANSYS, for fatigue crack closure analysis in this study is used. We derive the prediction formula of crack opening behavior when using the cyclic crack tip displacement obtained from the FEA. The numerical prediction shows the good results regardless of stress ratios. It is confirmed that the crack opening behavior depends upon the maximum stress intensity factor Kmax.

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Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

1106-1109

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.1106

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Online since:

September 2007

Authors:

Hyeon Chang Choi, Hyeon Ki Choi, Jun Hyub Park

Keywords:

Crack Opening, Cyclic Crack Tip Opening Displacement, Finite Element Analysis (FEA), Maximum Stress Intensity Factor, Reversed Plastic Zone Size

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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