Evaluation of the threshold values for the propagation of a fatigue crack starting at a V-notch

Authors

  • Jan Klusák Institute of Physics of Materials
    Czechia
  • Zdeněk Knésl Institute of Physics of Materials
    Czechia

Abstract

This paper presents a simple method for evaluating the threshold value for fatigue cracks that emanate from a V-notch. The proposed method is based on the similarities between the elastic-stress fields around the tip of a crack and the tip of a V-notch. Threshold values for fatigue cracks that emanate from a V-notch are expressed by means of the threshold value for the propagation of a high-cycle-fatigue crack and the opening angle of the V-notch. The corresponding calculations were performed by the finite-element method.

References

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[2] ANSYS Users Manual 5.0. Swanson Analysis System, Houston, 1992.
[3] C. Atkinson, J.M. Bastero, J.M. Martinez-Esnaola. Stress analysis in sharp angular notches using auxiliary fields. Engng. Fract. Mech., 31: 637- 646, 1988.
[4] B. Atzori, P. Lazzarin, R. Tovo. Stress field parameters to predict the fatigue strength of notched components. Journal of Strain Analysis, 34: 437-453, 1999.
[5] A.H. England. On stress singularities in linear elasticity. Int. J. Eng. Science, 9: 571- 585, 1971.

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Published

2023-02-16

Issue

Vol. 9 No. 4 (2002)
pp. 459-468

Section

Articles

License

Copyright © The Author(s).

This work is licensed under the Creative Commons Attribution 4.0 International CC BY 4.0.

How to Cite

Klusák, J., & Knésl, Z. (2023). Evaluation of the threshold values for the propagation of a fatigue crack starting at a V-notch. Computer Assisted Methods in Engineering and Science, 9(4), 459-468. https://cames3.ippt.pan.pl/index.php/cames/article/view/1112