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Prediction of the fatigue life of a notched body by the local stress-strain state. Part 2. Determination of a parameter representing the fatigue life of bodies with stress concentrators

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Abstract

We have studied the dependence of the fatigue life of smooth and notched specimens on various parameters of the notch-tip stress-strain state in the region of high-cycle fatigue prior to crack initiation. The tests were carried out on specimens of 30KhGSA steel and D16AT and AMtsM alloys with various stress concentrators. Local strains were measured using strain gauges with a small nominal length by the hysteresis loop method. It is shown that in the case of equal values of residual-stress amplitudes, the values of fatigue life coincide. We have proposed a relationship for calculating the residual-strain amplitude and have compared the calculated results with the experimental data.

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References

  1. P. A. Fomichev and V. V. Zvyagintsev, “Prediction of the fatigue life of a notched body by the local stress-strain state. Part 1. Determination of stresses and strains in a notch under elastoplastic cyclic deformation,”Probl. Prochn., No. 3, 38–46 (2000).

    Google Scholar 

  2. H. Hertel,Ermudungsfestigkeit der Konstruktionen, Sprinder-Verlag, Berlin-Heidelberg (1969).

    Google Scholar 

  3. R. B. Heywood,Designing against Fatigue, Chapman and Hall Ltd., London (1962).

    Google Scholar 

  4. P. G. Forrest,Fatigue of Metals, Pergamon Press (1962).

  5. L. A. Khamaza,Regularities of Deformation and Fatigue Fracture of Metals under Two-Frequency Loading, and Recommendations on the Fatigue Life Analysis of the Metals [in Russian], Preprint, Academy of Sciences of UkrSSR, Institute of Problems of Strength (1988).

  6. K. N. Smith, P. Watson, and T. H. Topper, “A stress-strain function for the fatigue of metals,”J. Mater.,5, No. 4, 767–778 (1970).

    Google Scholar 

  7. V. T. Troshchenko and N. I. Zhabko, “Deformation and fracture of metals under high-cycle loading in the nonuniform stress state. Parts 1 and 2”,Probl. Prochn., No. 9, 3–11; No. 11, 3–10 (1981).

    Google Scholar 

  8. V. T. Troshchenko,Deformation and Fracture of Metals under High-Cycle Loading [in Russian], Naukova Dumka, Kiev (1981).

    Google Scholar 

  9. P. A. Fomichev and I. Yu. Trubchaninov, “An equation of contour and a shape factor of a hysteresis loop,”Probl. Prochn., No. 3, 30–38 (1997).

    Google Scholar 

  10. P. A. Fomichev, “Energy-based method of calculation of fatigue life under irregular loading. Part 2. Fatigue life under preset block loading,”Probl. Prochn., No. 8, 3–11 (1995).

    Google Scholar 

  11. N. E. Dowling, W. R. Brose, and W. K. Wilson, “Notched member fatigue life predictions by the local strain approach,” in: R. M. Wetzel (Ed.),Fatigue under Complex Loading. Analyses and Experiments, SAE Inc. Warrandale, PA (1977), pp. 55–84.

    Google Scholar 

  12. V. T. Troshchenko and P. A. Fomichev, “Energy-based criterion of fatigue fracture,”Probl. Prochn., No. 1, 3–10 (1993).

    Google Scholar 

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Authors
  1. P. A. Fomichev
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Additional information

Kharkov Aviation Institute, Kharkov, Ukraine. Translated from Problemy Prochnosti, No. 3, pp. 46–55, May–June, 2000.

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Fomichev, P.A. Prediction of the fatigue life of a notched body by the local stress-strain state. Part 2. Determination of a parameter representing the fatigue life of bodies with stress concentrators. Strength Mater 32, 241–247 (2000). https://doi.org/10.1007/BF02509851

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  • DOI: https://doi.org/10.1007/BF02509851

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