Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-28T01:06:10.987Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Schijve, J., “Some Formulas for The Crack Opening Stress Level,” Engng. Fracture Mech., Vol. 14, pp. 461–465(1981).CrossRefGoogle Scholar
2.Bannantine, J. A., Comer, J. J. and Handrock, J. L., Fundamentals of Metal Fatigue Analysis, Prentice Hall, Englewood Cliffs, New Jersey (1990).Google Scholar
3.Newman, J. C. Jr., “A Finite Element Analysis of Fatigue Crack Closure,” ASTM STP, 590, pp. 281– 301 (1976).Google Scholar
4.McClung, R. C. and Sehitoglu, H., “On The Finite Element Analysis of Fatigue Crack Closure – 1. Basic Modeling Issues,” Engng. Fracture Mech., Vol. 33, pp. 237–252 (1989).CrossRefGoogle Scholar
5.Nicholas, T., Palazotto, A. and Bednarz, E., “An Analytical Investigation of Plasticity Induced Closure Involving Short Cracks,” ASTM STP, 982, pp. 361–379(1988).Google Scholar
6.Ogura, K. and Ohji, K., “FEM Analysis of Crack and Delay Effect in Fatigue Crack Growth Under Variable Amplitude Loading,” Engng. Fracture Mech., Vol. 9, pp. 471–480 (1977).Google Scholar
7.Nakagaki, M. and Atluri, S. N., “Elastic-Plastic Analysis of Fatigue Crack Closure in Modes I and II,” AIAA J., Vol. 18, pp. 1110–1117(1980).CrossRefGoogle Scholar
8.Lee, C. F., “Simulations of CCT Fatigue Crack Opened/Closure Phenomena of Al 2024–T3 via Computational Endochronic Plasticity,” Proceedings of Plasticity '97: The Sixth Int. Sym. on Plasticity and Its Current Applications, ed. Khan, A. S., pp. 361–362(1997).Google Scholar
9.Valanis, K. C, “Fundamental Consequences of a New Intrinsic Time Measure: Plasticity as a Limit of the Endochronic Theory,” Archives of Mechanics, Vol. 32, pp. 171–191 (1980).Google Scholar
10.Lee, C. F., “Numerical Method of the Incremental Endochronic Plasticity,” Chinese J. Mech., Vol. 8, pp. 377–396 (1992).Google Scholar
11.Lee, C. F., “Recent Finite Element Applications of the Incremental Endochronic Plasticity,” Int. J. Plasticity, Vol. 11, pp. 843–865 (1995).CrossRefGoogle Scholar
12.Fuchs, H. O. and Stephens, R. I., Metal Fatigue in Engineering, Wiley–Interscience, New York, pp. 298–299(1980).Google Scholar
13.Lee, C. F., “A Systematic Method of Determining Material Functions in the Endochronic Plasticity,” J. of The Chinese Society of Mechanical Engineers, Vol. 8, pp. 419–430 (1987).Google Scholar
14.Abdel Mageed, A. M. and Pandey, R. K., “Effect of Measurement Location and Fatigue–loading Parameters on Crack Closure Behavior,” Materials Science and Engng., Vol. 150, pp. 43–50 (1992).CrossRefGoogle Scholar