1_2026_sen_11

Title of the article ON THE ACTIVITIES OF THE CLUSTER OF THE RESEARCH AND PRODUCTION CENTER “OJSC “BSW — MANAGEMENT COMPANY OF “BMC” HOLDING” – NAS OF BELARUS”
Authors

VITYAZ Petr A., Academician of the NAS of Belarus, D. Sc. in Eng., Prof., Co-Chairman of the Council, Research and Production Center “OJSC “BSW — Management Company of “BMC” Holding” – NAS of Belarus”, Minsk, Republic of Belarus

TOLSTOY Aliaksandr V., Ph. D. in Phys. and Math., Assoc. Prof., Academic Secretary of the Council, Research and Production Center “OJSC “BSW — Management Company of “BMC” Holding” – NAS of Belarus”, Minsk, Republic of Belarus; Deputy Head of the Laboratory of Metallurgy in Mechanical Engineering of the R&D Center “Mechanical Engineering Technologies and Processing Equipment”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus; This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section TECHNICAL INFORMATION
Year 2026
Issue 1(74)
Pages 88–98
Type of article RAR
Index UDK  
DOI https://doi.org/10.46864/1995-0470-2026-1-74-88-98
Abstract The article covers the activities of the Council of the Research and Production Center “OJSC “BSW — Management Company of “BMC” Holding” – NAS of Belarus”. The results of the implementation of the tasks of the subprogram “Metallurgy” of the State Program of Scientific Research “Mechanics, Metallurgy, Diagnostics in Mechanical Engineering for 2021–2025”, completed in 2023, are considered. The progress of the implementation of the activities of the Program for the Development of Foundries of the Republic of Belarus for 2017–2030 is analyzed. The results of scientific and technical activities of OJSC “BSW” in 2023–2024 are discussed. In particular, it was noted that, in the context of sanctions pressure, the main areas of research, scientific and technical, and innovative activities of OJSC “BSW — Management Company of “BMC” Holding”, are the development of new types of products and technologies for steelmaking, steel rolling, and steel wire production, as well as the development, improvement, implementation of production technologies for innovative products. The features of iron foundry production in the Republic of Belarus and its prospects were analyzed. Considering that the year 2024 has been declared the Year of Quality in the Republic of Belarus, issues related to measuring and control instruments for metrological and technological quality assurance in metallurgy and foundry production were discussed at the Council meeting.
Keywords metallurgy, heat treatment, pressure treatment, ecology, recycling and waste disposal
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Bibliography
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1_2026_sen_10

Title of the article MULTI-CRITERIA CHOICE OF BASE OILS IN THE PRODUCTION OF LUBRICANTS BASED ON FUZZY TOPSIS
Authors

KAVALIOVA Inna N., Ph. D. in Eng., Assoc. Prof.,  Leading Researcher of the Laboratory 2.1 “Mechanics of composites and biopolymers”, V.A. Belyi Metal-Polymer Research Institute of the NAS of Belarus, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

MARCHANKA Larysa N., Ph. D. in Eng., Assoc. Prof., Head of Fundamental and Applied Mathematics Department, Francisk Skorina Gomel State University, Gomel, Republic of Belarus; Senior Researcher, Sofia Kovalevskaya Northwestern Center for Mathematical Research, Pskov, Russian Federation; This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. 

PODGORNAYA Viktoriya V., Ph. D. in Phys. and Math., Assoc. Prof., Deputy Director for Science, V.A. Belyi Metal-Polymer Research Institute of the NAS of Belarus, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

ZIYAMUKHAMEDOVA Umida A., D. Sc. in Eng., Prof., Professor of the Department of Materials Science and Mechanical Engineering, Tashkent State Transport University, Tashkent, Republic of Uzbekistan, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICAL ENGINEERING MATERIALS AND TECHNOLOGIES
Year 2026
Issue 1(74)
Pages 81–87
Type of article RAR
Index UDK 303.722.4:621.892
DOI https://doi.org/10.46864/1995-0470-2026-1-74-81-87
Abstract The friction units in any mechanism play an important role for their effective work as a whole. Modern mechanisms are not only high-precision, but also multi-component systems in which the selection of lubricant is an important task for developers and manufacturers. Developers need to take into account the properties of the friction unit materials and its functionality, loads, and manufacturers to get a final product not only reliable, but also cost-effective, meeting consumer demands. Since lubricants have different composition and functional purpose, a system approach should be used in their selection. The presented paper proposes a methodology of selection of base oil based on their physico-chemical properties (criteria) according to the results of physical experiment and unclear approach. The experimental data were converted into trapezoidal fuzzy numbers, unclear weights of selection criteria were determined, and a Fuzzy TOPSIS procedure was carried out. The proposed approach takes into account the variation of experimental data and measurement uncertainty when grading base oils by their physico-chemical properties.
Keywords vegetable oils, animal fats, biodegradable lubricants, friction coefficient, wear rate, entropy, Fuzzy TOPSIS, rating, environmental pollution
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1_2026_sen_8

Title of the article MODELING AND ACCELERATED TESTS UNDER ROLLING FRICTION AND MECHANO-ROLLING FATIGUE
Authors

BOGDANOVICH Alexander V., D. Sc. in Eng., Prof., Professor of the Department of Theoretical and Applied Mechanics, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

TYURIN Sergey A., Ph. D. in Eng., Assoc. Prof., Head of the Department “Mobile and Technological Complexes”, Sukhoi State Technical University of Gomel, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

YELOVOY Oleg M., Ph. D. in Eng., Deputy Director General for Research and Innovations, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section TRIBO-FATIGUE SYSTEMS MECHANICS
Year 2026
Issue 1(74)
Pages 66–74
Type of article RAR
Index UDK 539.4 
DOI https://doi.org/10.46864/1995-0470-2026-1-74-66-74
Abstract Modelling principles and methods of laboratory accelerated tests of friction pairs and active systems in rolling and mechano-rolling fatigue are discussed in the paper. The system of criteria of similarity damage based on a statistical model of a deformable solid with dangerous volume is developed. It has been used successfully under volume and surface deformation, as well as in their interaction. The possibility of using the multi-stage loading method (Lokati) for the computational and experimental assessment of the contact rolling fatigue limit is shown, taking into account the similarity of the mechanisms of mechanical and rolling fatigue. The method of accelerated tests for rolling friction and mechano-rolling fatigue by multi-stage loading with a direct effect (change in time of the amplitude σa of bending stresses at a constant value of contact stresses p0 = const) and with a back effect (change in time of contact stresses p0 at a constant value of the amplitude of bending stresses σa = const) is described and implemented on a specific example. Examples of methods for accelerating tests by forcing their modes are also shown.
Keywords accelerated tests, modelling, active system, friction pair, wear-fatigue damage, rolling friction, mechano-rolling fatigue
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Title of the article EFFECT OF VACUUM-ARC ANNEALING OF TiN COATINGS ON THEIR PEEL LOAD AND RESISTANCE TO FRETTING WEAR
Authors

KUSHNEROU Andrey V., Researcher of the Center of Structural Research and Tribomechanical Testing of Materials and Mechanical Engineering Products of the R&D Center “Mechanical Engineering Technologies and Processing Equipment”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

BELYANKO Yuriy V., Technician of the Center of Structural Research and Tribomechanical Testing of Materials and Mechanical Engineering Products of the R&D Center “Mechanical Engineering Technologies and Processing Equipment”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KONSTANTINOV Stanislav V., Ph. D. in Phys. and Math., Assoc. Prof., Leading Researcher of the Elionics Laboratory, A.N. Sevchenko Institute of Applied Physical Problems of Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

KONSTANTINOV Valeriy M., D. Sc. in Eng., Prof., Head of the Department “Materials Science in Mechanical Engineering”, Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

SHOUKAVAYA Tatyana V., Ph. D. in Phys. and Math., Assoc. Prof., Senior Researcher, Scientific and Practical Center of the NAS of Belarus for Materials Science, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. 
In the section MECHANICAL ENGINEERING MATERIALS AND TECHNOLOGIES
Year 2026
Issue 1(74)
Pages 75–80
Type of article RAR
Index UDK 620.178.16, 621.793, 621.891
DOI https://doi.org/10.46864/1995-0470-2026-1-74-75-80
Abstract The effect of vacuum-arc annealing of TiN coating on its wear resistance under fretting conditions and peel load is studied. It is found that the coating in the initial state contains TiN with a face-centered cubic lattice and Ti with a hexagonal close-packed lattice, and its phase composition does not change during annealing at 300–500 °C. After annealing the coating at 550 ℃, TiN, Ti and TiO2 are recorded in its phase composition. It is shown that annealing the coating at 350–400 ℃ contributes to an increase in fretting wear resistance by 10 % and an increase in the peel load. As a result of annealing at 450–500 ℃, the peel load remains at a high level, and after annealing at 550 ℃, it drops sharply. At the same time, the wear resistance of the coatings in the annealing temperature range of 450–550 ℃ decreases by 20 %. It is concluded that the increase in the coating peeling load after annealing at 350–500 ℃ is due to the formation of a film of lower titanium oxides on the coating surface, which act as a solid lubricant and prevent the nucleation of dislocations, as well as the appearance of microcracks at the coating-substrate boundary during scratch testing. The reduction of peel load as a result of annealing at 550℃ and wear resistance after annealing at 450–550 ℃ is caused by softening of the coating.
Keywords TiN coatings, vacuum-arc deposition, annealing, nanohardness, peel load, wear resistance, fretting
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1_2026_sen_7

Title of the article NUMERICAL AND ANALYTICAL MODELING OF DAMAGE ACCUMULATION PROCESSES AND EVOLUTION OF STRESS-STRAIN STATE AT THE CRACK TIP IN CREEP MODE
Authors

STEPANOVA Larisa V., D. Sc. in Phys. and Math., Prof., Head of the Department of Mathematical Modeling in Mechanics, Samara National Research University, Samara, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

CHAPLIY Dmitry V., Postgraduate Student of the Department of Mathematical Modeling in Mechanics, Samara National Research University, Samara, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

BELOVA Oksana N., Associate Professor of the Department of Mathematical Modeling in Mechanics, Samara National Research University, Samara, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. 
In the section DYNAMICS, DURABILITY OF VEHICLES AND STRUCTURES
Year 2026
Issue 1(74)
Pages 56–65
Type of article RAR
Index UDK 539
DOI https://doi.org/10.46864/1995-0470-2026-1-74-56-65
Abstract The work is devoted to the study and analysis of finite element (FE) calculations performed by a large cycle of computational experiments of plate deformation with a section under steady-state creep conditions, which revealed a power-law self-similar distribution of the continuity function (damage) and stress components in the immediate vicinity of the tip of the section at the second and third stages of creep in a damaged medium in a related formulation of the problem, when the continuity parameter is included in the constitutional relations. The FE computations of stress fields and continuity near the tip of the defect were carried out using the powerful SIMULIA Abaqus platform using the UMAT utility, which integrates the process of damage development into the computational scenario of the finite element method (FEM). The paper implements computer modeling of uniaxial stretching of a plate weakened by a central horizontal section or an inclined section in creep mode, in which computational algorithms include damage growth that progresses over time according to the classical mechanical model of damage growth by Kachanov–Rabotnov according to a power law for various values of exponents of the kinetic equation and the power determining equation with the concept of true tension in a related formulation. Numerical study and analysis of the obtained FE representations of stress and continuity fields in the vicinity of the crack tip for a number of material constants clearly reveals a self-similar distribution of stress fields and damage near the tip of a power-type defect. The structure of the solution is revealed and the values of the exponents in the self-similar variable and the self-similar representation of the solution are found, which can be interpreted as an intermediate self-similar solution of the second type according to the classification of G.I. Barenblatt. It is shown that the discovered self-similar property of the solution can be interpreted as self-similar asymptotics of the far field of continuity and stresses. Also, the stress dependences extracted from FEM calculations on the distance from the tip of the incision, reproduced in double logarithmic coordinates, clearly demonstrate the asymptotic behavior corresponding to the near-field stress, characterized by the complete absence of a singularity in the immediate vicinity of the tip of the incision.
Keywords damage, continuity, Kachanov–Rabotnov model, fields at the crack tip, UMAT, stress field asymptotics, self-similarity
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