Abstract
An experimental and analytical investigation of the general mechanisms controlling deformation and fatigue failure of a number of structural steels during low and high, and also during two-frequency loading is carried out. An attempt is made to describe the damaging effect of combined cyclic loads of different frequencies on the fundamental energy criteria of fatigue failure. Two-frequency loading is converted into an equivalent harmonic single-cycle loading through the use of a relative endurance. This is done by uniting into one frequency the energy of each component of the two-frequency loading.
It is shown that the relationship obtained for determining the endurance under conditions of two-frequency loading is in good agreement with the experimental results.
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Institute of Strength Problems, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Problemy Prochnosti, No. 10, pp. 13–18, October, 1989.
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Khamaza, L.A., Kovalenko, V.A. Resistance of metals to fatigue failure and deformation during two-frequency loading Report 2. Method for estimating the cyclic endurance during two-frequency loading. Strength Mater 21, 1293–1299 (1989). https://doi.org/10.1007/BF01529253
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DOI: https://doi.org/10.1007/BF01529253