 | | 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: | | 13653 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8223
|
| In English (Mech. Solids): | | 5430 |
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| I.R. Murtazin and A.S. Semenov, "Microstructural Modeling, Simulation, and Experimental Investigation of Non-Proportional Passive Loading on Pure Nickel Tubular Specimens," Mech. Solids. 60 (8), 6647-6659 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
8 |
Pages |
6647-6659 |
| DOI |
10.1134/S0025654425605737 |
| Title |
Microstructural Modeling, Simulation, and Experimental Investigation of Non-Proportional Passive Loading on Pure Nickel Tubular Specimens |
| Author(s) |
I.R. Murtazin (Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251 Russia, murtazin_ir@spbstu.ru)
A.S. Semenov (Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251 Russia, semenov_as@spbstu.ru) |
| Abstract |
The study of microplastic strain accumulation processes under complex passive loading is
relevant for fatigue analysis. In this paper, based on a modified microstructural model of elastoplastic
deformation, which includes various mechanisms of inelastic deformation, the possibility of a refined
description of non-proportional passive loading is investigated, and the proposed approach is experimentally verified. The microstructural model of polycrystalline material takes into account the presence and interaction of crystallites with arbitrary orientation. The model is compared with the experiment using the finite element homogenization method by averaging the microstress and microstrain
fields over a representative volume element. The results of experimental studies of tubular polycrystal-line samples of technically pure nickel under active (uniaxial tension after preliminary compression)
and passive (torsion with tension/compression inside the yield hypersurface) loading are presented.
A relation between the microstructure of the samples and their mechanical characteristics has been
established. Based on the results of macro-level experiments using the particleswarm optimization
method, which simulates the group behavior of agents, a procedure for determining the parameters of
the microstructural model has been developed. The comparison of computation results with experimental data showed that the proposed two-level microstructural model of polycrystalline material
allows the process of plastic strain accumulation under complex non-proportional passive loading to be described with good accuracy. |
| Keywords |
single crystal, polycrystal, passive loading, nickel, microstructural modeling, validation, parameter identification, experiment, stress-strain curves, finite element method |
| Received |
10 May 2025 | Revised |
11 August 2025 | Accepted |
24 December 2025 |
| Link to Fulltext |
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