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A method for low-cycle fatigue life assessment of metallic materials under multiaxial loading

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Abstract

A new method of fatigue life assessment under multiaxial low-cycle regular and irregular loading is proposed, which is based on the modified Pisarenko-Lebedev criterion, the linear damage accumulation hypothesis, and the nonlinear Manson approach. The results of low-cycle fatigue tests of titanium alloy VT9 under irregular proportional and non-proportional biaxial loading are given. The tests were carried out at three Mises strain levels (0.6, 0.8, and 1.0%) with various combinations of proportional and non-proportional strain paths. All the tests were carried out at room temperature. The proposed method turned out to be effective and to allow for such factors as strain state type, strain path type and loading irregularity.

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Authors and Affiliations

  1. Institute of Mechanical Engineering, Department of Machine Dynamic and Strength of Materials, National Technical University of Ukraine “Kiev Polytechnic Institute”, Kiev, Ukraine

    S. Shukaev, M. Gladskii, A. Zakhovaiko & K. Panasovskii

Authors
  1. S. Shukaev
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  2. M. Gladskii
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  3. A. Zakhovaiko
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  4. K. Panasovskii
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Corresponding author

Correspondence to S. Shukaev.

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Translated from Problemy Prochnosti, No. 1, pp. 56–59, January–February, 2008.

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Shukaev, S., Gladskii, M., Zakhovaiko, A. et al. A method for low-cycle fatigue life assessment of metallic materials under multiaxial loading. Strength Mater 40, 48–51 (2008). https://doi.org/10.1007/s11223-008-0013-0

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  • DOI: https://doi.org/10.1007/s11223-008-0013-0

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