 | | 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: | | 13554 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8194
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| In English (Mech. Solids): | | 5360 |
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| D.S. Petukhov and I.E. Keller, "Simulating the Frequency and Dwell Effects on Fatigue Life Using an Evolutionary Damage Model," Mech. Solids. 60 (7), 6493-6504 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
7 |
Pages |
6493-6504 |
| DOI |
10.1134/S0025654425605488 |
| Title |
Simulating the Frequency and Dwell Effects on Fatigue Life Using an Evolutionary Damage Model |
| Author(s) |
D.S. Petukhov (Institute of Continuous Media Mechanics UB RAS, Perm, 614013 Russia, petuhovds@mail.ru)
I.E. Keller (Institute of Continuous Media Mechanics UB RAS, Perm, 614013 Russia, kie@icmm.ru) |
| Abstract |
The study is aimed at developing an evolutionary model of fatigue damage accumulation,
which is a functional of the stress variation over time in a local volume, independent of plastic strains.
This model has been generalized to account for the rheonomic effects reflecting the dependence of
fatigue life on loading frequency and dwell periods at the maximum stress in a cycle. The material constants of the model have been determined for the two-phase titanium alloy VT6 (the equivalent of Ti-6Al-4V), exhibiting the cold creep that is the sensitivity of fatigue properties to the time characteristics
of cyclic loading at room temperature. New data of the fatigue tests with various frequencies and dwell
periods in cycles have been used. It has been shown that the model can correctly describe these data
and also predict the fatigue life for a wider range of loading conditions. The fatigue life of a gas turbine
engine component has been calculated for the flight cycles, accounting for the dwell periods at maximum and intermediate stress values within the cycle, and the calculation results demonstrated a significant non-conservatism of the fatigue life calculations by applying the simplified load-spectrum
approach within the framework of the linear damage accumulation hypothesis. |
| Keywords |
fatigue failure, damage evolution, a model, high-cycle fatigue, flight cycles, frequency dependence, dwell fatigue, identification |
| Received |
16 September 2025 | Revised |
29 October 2025 | Accepted |
31 October 2025 |
| Link to Fulltext |
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