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EndoFEM Node-Released Strategy in the Simulations of Fatigue Crack Closure Phenomena

Published online by Cambridge University Press:  05 May 2011

L. T. Hsiao  and
C. F. Lee
L. T. Hsiao*
Affiliation:
Department of Engineering Science, National Cheng-Kung University, Tainan, Taiwan, R.O.C.
C. F. Lee*
Affiliation:
Department of Engineering Science, National Cheng-Kung University, Tainan, Taiwan, R.O.C.
*
*Graduate student
**Professor
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Abstract

Applications of the EndoFEM with node-released methods had been used successfully to simulate the plastic wakes left behind the advancing fatigue crack. In this paper, employing the plastic zone size estimated by LEFM as a guideline, four strategies with various plans of node-released rates and two plans of finite element discretization near crack tip, are proposed to generate various fatigue cracked lengths of A12024-T3 CCT specimen under all tensile-cyclic loading. Evaluations based on the mechanical responses near crack tip and the crack opened/closure behaviors, it can be concluded that the EndoFEM with the rc dominant node-released strategy can lead to not only economical but also reliable results.

Keywords

EndoFEMFatigue crack opened/closure loadStress ratiorc dominant node-released strategyPlastic wakeLEFM.
Type
Articles
Information
Journal of Mechanics , Volume 14 , Issue 2 , June 1998 , pp. 57 - 66
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 1998

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References

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