Influence of additional static stresses on biaxial low-cycle fatigue of 2024 aluminum alloy

Andrey Yankin; Anastasia Lykova; Artur Mugatarov; Valeriy Wildemann; Artem Ilinykh

doi:10.3221/IGF-ESIS.62.13

Influence of additional static stresses on biaxial low-cycle fatigue of 2024 aluminum alloy

Authors

Andrey Yankin Center of Experimental Mechanics, Perm National Research Polytechnic University, Perm, Russian Federation https://orcid.org/0000-0002-0895-4912
Anastasia Lykova Center of Experimental Mechanics, Perm National Research Polytechnic University, Perm, Russian Federation https://orcid.org/0000-0003-4873-6351
Artur Mugatarov Center of Experimental Mechanics, Perm National Research Polytechnic University, Perm, Russian Federation https://orcid.org/0000-0002-2229-8181
Valeriy Wildemann Center of Experimental Mechanics, Perm National Research Polytechnic University, Perm, Russian Federation
Artem Ilinykh Center of Experimental Mechanics, Perm National Research Polytechnic University, Perm, Russian Federation https://orcid.org/0000-0001-9162-1053

DOI:

https://doi.org/10.3221/IGF-ESIS.62.13

Keywords:

Low-cycle fatigue, Aluminum alloy, Сomplex stress state, Fatigue life, Experimental research

Abstract

In this paper, a previously developed modification of the Sainz model of multiaxial fatigue is reduced to an invariant form. Model constants were determined for different sets of setup experiments. It was supposed to introduce an additional summand to account for the phase shift between loading modes. The model is used to describe the fatigue behavior of the D16T aluminum alloy. Low-cycle fatigue tests under biaxial loading conditions are presented, with one mode changing cyclically and the other mode remaining constant in magnitude throughout the test. The results of cyclic durability prediction by the modified model provide good convergence.

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Published

22-09-2022

Issue

Vol. 16 No. 62 (2022): October 2022

Section

Fatigue

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Influence of additional static stresses on biaxial low-cycle fatigue of 2024 aluminum alloy. (2022). Frattura Ed Integrità Strutturale, 16(62), 180-193. https://doi.org/10.3221/IGF-ESIS.62.13