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Cumulative model of very high cycle fatigue
Author(s) -
STEPANSKIY L. G.
Publication year - 2012
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2011.01643.x
Subject(s) - materials science , monotonic function , recrystallization (geology) , ultimate tensile strength , metallurgy , deformation (meteorology) , structural engineering , composite material , mathematics , engineering , mathematical analysis , paleontology , biology
To predict very high cycle fatigue (VHCF) from data of standard monotonic tests the cumulative model of VHCF was elaborated. The model bases on the following assumptions: (1) Fatigue cracks are initiated, if the fraction of plastically dissipated energy corresponding to tensile stresses reaches the threshold; (2) This threshold is the constant for the given initial mechanical properties of alloys, if influence of the phase transformations on these properties is not significant, and the absolute temperatures of deformation are not above of temperatures of beginning recrystallization. The predicted values of VHCF for typical bearing, spring, stainless steels, and typical Ti‐ and Al‐alloys are in satisfied agreements with published values.