 | | 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: | | 12977 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8096
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| In English (Mech. Solids): | | 4881 |
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| << Previous article | Volume 59, Issue 5 / 2024 | Next article >> |
| V.Yu. Marina, "Description of the Phenomenon of Decreasing Plasticity with Increasing Yield Strength of Polycrystal," Mech. Solids. 59 (5), 2746-2762 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
5 |
Pages |
2746-2762 |
| DOI |
10.1134/S0025654424603537 |
| Title |
Description of the Phenomenon of Decreasing Plasticity with Increasing Yield Strength of Polycrystal |
| Author(s) |
V.Yu. Marina (Technical University of Moldova, Chisinau, Moldova, vasilemarina21@yahoo.com) |
| Abstract |
Using a three-level constitutive model, the influence of the crystal anisotropy factor, the
hardening coefficient, the microscopic elastic limit and the distribution density function of the limiting elastic deformations of subelements on the shape of the deformation diagrams and the fracture
conditions of a polycrystal is studied. Based on the theory of maximum normal stresses at the local
level, a failure criterion was established at the macroscopic level, which includes all the parameters of
the problem. The influence of the type of stress state and the geometric shape of the loading diagram on the magnitude of irreversible deformation preceding the initial process of destruction is investigated. From the established strength criterion follows the effect of a decrease in the plasticity of the
material with increasing yield strength. The question of the critical value of the weight of destroyed
subelements is discussed, at which a macrocrack forms, leading to the complete destruction of the
body element. |
| Keywords |
structure, stress, deformation, fracture, plasticity, polycrystal, hardening, averaged connections, inconsistencies of measures, subelement |
| Received |
17 April 2024 | Revised |
09 June 2024 | Accepted |
18 June 2024 |
| Link to Fulltext |
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