 | | 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: | | 11262 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8011
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| In English (Mech. Solids): | | 3251 |
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| << Previous article | Volume 57, Issue 7 / 2022 | Next article >> |
| I.S. Nikitin, N.G. Burago, and A.D. Nikitin, "Damage and Fatigue Fracture of Structural Elements in Various Cyclic Loading Modes," Mech. Solids. 57 (7), 1793-1803 (2022) |
| Year |
2022 |
Volume |
57 |
Number |
7 |
Pages |
1793-1803 |
| DOI |
10.3103/S0025654422070135 |
| Title |
Damage and Fatigue Fracture of Structural Elements in Various Cyclic Loading Modes |
| Author(s) |
I.S. Nikitin (Institute for Computer Aided Design, Russian Academy of Sciences, Moscow, Russia, i_nikitin@list.ru)
N.G. Burago (Institute for Computer Aided Design, Russian Academy of Sciences, Moscow, Russia, buragong@yandex.ru)
A.D. Nikitin (Institute for Computer Aided Design, Russian Academy of Sciences, Moscow, Russia, nikitin_alex@bk.ru) |
| Abstract |
On the basis of the previously suggested multimode two-criterion model of fatigue fracture,
a method is proposed for calculating the origin and development of narrow localized damage zones in
structural elements for various modes of cyclic loading. Such narrow zones of damage can be considered as quasi-cracks of two types, corresponding to the mechanism of normal opening and shear fracture.
We consider an important example of a flight loading cycle (high-cycle fatigue) and high-frequency
cyclic loading during torsion-bending vibrations of the blades (very-high-cycle fatigue) of an aircraft
gas turbine engine compressor disk. The durability of this element of aircraft structures is assessed.
An example of calculating fatigue fracture at high-frequency torsional vibrations of an experimental
sample of a certain shape is also considered. For this sample it was possible to reproduce the observed
effect of a sharp change in the growth direction and the type of quasi-crack during cyclic loading. |
| Keywords |
fatigue fracture, high-cycle fatigue, very-high-cycle fatigue, multimode model, damage equation, fracture criterion, compressor disk, compressor blades |
| Received |
30 September 2021 | Revised |
21 January 2022 | Accepted |
27 January 2022 |
| Link to Fulltext |
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