 | | 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: | | 12804 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4760 |
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| I. A. Volkov, L. A. Igumnov, D. N. Shishulin, and E. V. Boev, "Modeling of Non-Stationary Creep Processes Under Multiple Loading Conditions by Taking Into Account Damage Accumulation in a Structural Material," Mech. Solids. 57 (2), 223-231 (2022) |
| Year |
2022 |
Volume |
57 |
Number |
2 |
Pages |
223-231 |
| DOI |
10.3103/S0025654422020224 |
| Title |
Modeling of Non-Stationary Creep Processes Under Multiple Loading Conditions by Taking Into Account Damage Accumulation in a Structural Material |
| Author(s) |
I. A. Volkov (National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603022 Russia, pmptmvgavt@yandex.ru)
L. A. Igumnov (National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603022 Russia, igumnov@mech.unn.ru)
D. N. Shishulin (National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603022 Russia, shishulindn@gmail.ru)
E. V. Boev (National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, 603022 Russia, e.boev87@mail.ru) |
| Abstract |
The article considers the problem on assessing the kinetics of the stress-strain state and the process of damage accumulation in polycrystalline structural materials of units and assemblies of engineering objects, the operational impacts of which are characterized by a highly loaded state under the influence of non-stationary long-term thermal force loading, where the main degradation mechanism is material creep. A mathematical model is presented. It is based on the concepts of the mechanics of a damaged medium and makes it possible to describe processes during unsteady creep under complex loading conditions and the main hypotheses underlying the mathematical model. By comparing the results of a numerical simulation with experimental data, a proof of the applicability of the mathematical model for uniaxial and multiaxial sign-variable loading conditions is given. |
| Keywords |
long-term strength, material creep, mathematical modeling, damaged medium mechanics, creep model parameters, experimental data and numerical simulation |
| Received |
01 October 2021 | Revised |
09 October 2021 | Accepted |
11 October 2021 |
| Link to Fulltext |
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