Issues »  Volume 37, Issue 5

Factors Determining a Level of Constructional Steel Sensitivity to Stress Concentration

S. O. Kotrechko, V. M. Grishchenko, S. O. Mamedov

G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 18.02.2015; final version - 16.03.2015. Download: PDF

The work is concerned with revealing of factors, which influence the ability of constructional steels to resist brittle fracture under the conditions of ‘stress concentration’. Derived from the analysis of contemporary knowledge on both the origin and the loss of stability in fresh cracks around the ultimate small volume of ‘process zone’ at the tip of concentrator, the degree of local stress of initiation fracture exceeding brittle strength $R_{MC}$ (coefficient $k_{V} = \sigma_{f}/R_{MC}$) is one of the basic indicators of constructional-steels’ capability to resist brittle fracture under the stress concentration influence. The dependences of $k_{V}$ variation on strength of steel and its structural state are determined. The ranges of strength are determined, in which constructional steels with different structures possess the strongest resistance to the stress concentrations.

Key words: brittle fracture, stress concentrator, constructional steels.

URL: http://mfint.imp.kiev.ua/en/abstract/v37/i05/0649.html

DOI: https://doi.org/10.15407/mfint.37.05.0649

PACS: 02.70.Dh, 46.50.+a, 62.20.mj, 62.20.mm, 62.20.mt, 81.40.Np, 81.70.Bt

Citation: S. O. Kotrechko, V. M. Grishchenko, and S. O. Mamedov, Factors Determining a Level of Constructional Steel Sensitivity to Stress Concentration, Metallofiz. Noveishie Tekhnol., 37, No. 5: 649—663 (2015) (in Russian)

REFERENCES
  1. G. V. Uzhik, Soprotivlenie Otryvu i Prochnost' Metallov (Moscow: AN SSSR: 1950) (in Russian).
  2. S. A. Kotrechko and Yu. Ya. Meshkov, Predel'naya Prochnost' (Kiev: Naukova Dumka: 2008) (in Russian).
  3. F. M. Beremin, Met. Trans., 14: 2277 (1983). Crossref
  4. Tsann Lin, A. G. Evans, and R. O. Ritchie, Acta Metal., 34, No. 11: 2205 (1986). Crossref
  5. Yu. Ya. Meshkov and G. A. Pakharenko, Struktura Metalla i Khrupkost' Stal'nykh Izdeliy (Kiev: Naukova Dumka: 1985) (in Russian).
  6. S. Kotrechko, J. Theor. Appl. Mechanics, 51, No. 1: 75 (2013).
  7. S. A. Kotrechko, Metallofiz. Noveishie Tekhnol., 14, No. 5: 37 (1992) (in Russian).
  8. S. O. Kotrechko, Yu. O. Polushkin, V. M. Gryshchenko, and S. O. Mamedov, Metallofiz. Noveishie Tekhnol., 35, No. 11: 1517 (2013) (in Russian).
  9. P. M. Vitvitskiy and S. Yu. Popina, Prochnost' i Kriteriy Khrupkogo Razrusheniya Stokhasticheski Defektnykh Tel [Strength and Brittle Fracture Criterion for Stochastically Defective Solids] (Kiev: Naukova Dumka: 1980) (in Russian).
  10. G. P. Zimina, S. A. Kotrechko, Yu. Ya. Meshkov, K. P. Ryaboshapka, and N. N. Stetsenko, Metallofiz. Noveishie Tekhnol., 23, No. 6: 821 (2001) (in Russian).
  11. G. P. Zimina and S. A. Kotrechko, Metallofiz. Noveishie Tekhnol., 26, No. 4: 457 (2004) (in Russian).
  12. D. F. Nott, Osnovy Mekhaniki Razrusheniya [Fundamentals of Fracture Mechanics] (Moscow: Metallurgiya: 1978) (in Russian).
  13. G. S. Pisarenko and A. A. Lebedev, Deformirovanie i Prochnost' Materialov pri Slozhnom Napryazhennom Sostoyanii [Deformation and Strength of Materials under Complex Stress Condition] (Kiev: Naukova Dumka: 1976) (in Russian).
  14. S. A. Kotrechko, Yu. Ya. Meshkov, and I. Dlouhý, Theor. Appl. Fracture Mechanics, 47, No. 2: 171 (2007). Crossref
  15. Yu. Ya. Meshkov, Fizicheskie Osnovy Razrusheniya Stal'nykh Konstruktsiy [Physical Foundations of Steel Structures Destruction] (Kiev: Naukova Dumka: 1981) (in Russian).
  16. G. S. Pisarenko and A. J. Krasovsky, Proc. Int. Conf. ICM-1 (Kyoto, 1971) (Kyoto: JSMS: 1972), vol. 1, p. 421.
  17. M. Di. Fant, V. Le. Cog, and O. Cleizergues, Journal de Physique IV, 1, No. 6: 503 (1996).
  18. C. S. Wiesner, The Local Approach to Cleavage Fracture—Concepts and Applications (Cambridge: Abington Publishing: 1996), p. 103.
  19. B. Strnadel, Theor. Appl. Fracture Mechanics, 11, No. 19: 105 (1993). Crossref
  20. S. A. Kotrechko, Yu. Ya. Meshkov, K. P. Ryaboshapka, and N. N. Stetsenko, Metallofiz. Noveishie Tekhnol., 17, No. 1: 51 (1995) (in Russian).
  21. S. A. Kotrechko and Yu. Ya. Meshkov, Metallofiz. Noveishie Tekhnol., 19, No. 4: 43 (1997) (in Russian).
  22. S. A. Kotrechko, Metallofiz. Noveishie Tekhnol., 23, No. 1: 103 (2001) (in Russian).
  23. S. O. Kotrechko and S. O. Mamedov, Metallofiz. Noveishie Tekhnol., 33, No. 8: 1119 (2011).
  24. S. O. Kotrechko and S. O. Mamedov, Metallofiz. Noveishie Tekhnol., 33, No. 5: 687 (2011) (in Russian).
  25. S. A. Kotrechko, Metallofiz. Noveishie Tekhnol., 16, No. 10: 37 (1994) (in Russian).
  26. S. A. Kotrechko, Problemy Prochnosti, No. 4: 14 (2003) (in Russian).
  27. S. O. Kotrechko and Yu. Ya. Meshkov, Fizyko-Khimichna Mekhanika Materialiv, No. 4: 49 (2001) (in Ukrainian).

© 2013–2018 "G.V. Kurdyumov Institute for Metal Physics"