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

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

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.

Keywords

References

[1] T .L. Anderson. Fracture Mechanics: Fundamentals and Applications. CRC Press, U.S.A., 1995.
[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.
Published
Feb 16, 2023
How to Cite
KLUSÁK, Jan; KNÉSL, Zdeněk. Evaluation of the threshold values for the propagation of a fatigue crack starting at a V-notch. Computer Assisted Methods in Engineering and Science, [S.l.], v. 9, n. 4, p. 459-468, feb. 2023. ISSN 2956-5839. Available at: <https://cames.ippt.pan.pl/index.php/cames/article/view/1112>. Date accessed: 31 dec. 2024.
Citation Formats
Issue
Vol 9 No 4 (2002)
Section
Articles
Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.