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On the use of hyperbolic function to describe fatigue S-N curve

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Abstract

We analyze the peculiarities of hyperbolic functions describing S-N curves as applied to a welded joint of mild and alloyed steels. We have demonstrated that the parameter σu used in σ-N equation does not generally correspond to the ultimate strength of the material, as it is commonly assumed. Methods for calculating the parameters of hyperbolic equations of S-N curves are proposed for cases, where the endurance limits are unknown or experimentally determined.

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Authors and Affiliations

  1. Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine

    B. S. Shul’ginov, V. V. Matveev & A. P. Kolomiets

Authors
  1. B. S. Shul’ginov
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  2. V. V. Matveev
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  3. A. P. Kolomiets
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Translated from Problemy Prochnosti, No. 4, pp. 77–89, July–August, 2007.

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Shul’ginov, B.S., Matveev, V.V. & Kolomiets, A.P. On the use of hyperbolic function to describe fatigue S-N curve. Strength Mater 39, 392–400 (2007). https://doi.org/10.1007/s11223-007-0044-y

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  • DOI: https://doi.org/10.1007/s11223-007-0044-y

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