 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| D. S. Petukhov and I. E. Keller, "Evolutionary Model of Fatigue Fracture Under Irregular Loading," Mech. Solids. 57 (2), 263-270 (2022) |
| Year |
2022 |
Volume |
57 |
Number |
2 |
Pages |
263-270 |
| DOI |
10.3103/S0025654422020194 |
| Title |
Evolutionary Model of Fatigue Fracture Under Irregular Loading |
| Author(s) |
D. S. Petukhov (Institute of Continuous Media Mechanics of the Ural Branch of Russian Academy of Science, Perm, 614013 Russia, petuhovds@mail.ru)
I. E. Keller (Institute of Continuous Media Mechanics of the Ural Branch of Russian Academy of Science, Perm, 614013 Russia, kie@icmm.ru) |
| Abstract |
An evolutionary model of fatigue failure under high-cycle irregular loading is presented. Its structure corresponds to the Ottosen model, however, the equations for the displacement of the endurance surface and damage accumulation are significantly improved and memory is introduced for the cycle with the maximum stress range in the previous loading history. The material constants of the model are determined from lifetime data for an aluminum alloy, including Wöhler curves for two values of the load ratio R, the Haigh curve, static tensile and torsion tensile strengths, cyclic loading with periodic overloads, and cyclic disproportionate loading. The evolution of damage accumulation during the flight cycle is calculated and the critical loading block, on which the fatigue life of the material depends for a similar nature of the impact, is identified. It is shown that the model leaves the freedom to describe different values of this resource depending on the experimental data. |
| Keywords |
fatigue failure, damage evolution, model, high-cycle fatigue, irregular loading, flight cycles, identification |
| Received |
09 October 2021 | Revised |
10 October 2021 | Accepted |
11 October 2021 |
| Link to Fulltext |
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