Prediction the wear of sliding bearings

Dykha, Aleksandr; Диха, О.В.; Марченко, Дмитро Дмитрович; Marchenko, Dmytro

doi:10.14419/ijet.v7i2.23.11872

Cited by 19 publications

(11 citation statements)

References 9 publications

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“…It was found that the addition of carbon fibers reduced the friction and wear of epoxy composites; however, the mechanisms of this action were not described. The authors of [17][18][19] built the mathematical models that make it possible to predict sample wear when rubbing on a steel surface according to the friction track width [17] and the amount of applied frictional force and pathway [18]. At the same time, those models do not take into consideration the chemical composition of steel and structural transformations in it in the process of friction.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Influence of the structure and thermomechanical properties of oriented carbon plastics on their tribotechnical characteristics

Dykha

Drobot

Oleksandrenko

et al. 2021

EEJET

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It has been established that carbon plastics are increasingly used in various industries as structural materials. By the set of their properties, carbon plastics outperform steel, cast iron, alloys of non-ferrous metals. However, the application of these materials for parts of machine friction units is still limited due to the difficult operating conditions of modern tribosystems. This work aims to conduct a comprehensive experimental study of the tribological properties of materials in the tribosystem "carbon plastic-metal" taking into consideration their structure, as well as the mechanical-thermal characteristics. Comparative tests of the dependence of the friction coefficient on load for metal and polymeric anti-friction materials have shown a decrease in the friction coefficient for plastics by 3...4 times (textolite, carbotextolite, and carbon-fiber plastics). The influence of the filler orientation relative to the slip plane on the anti-friction properties of carbon-fiber plastics was investigated; it was found that the direction of fiber reinforcement in parallel to the friction area ensures less carbon-fiber plastic wear. A linear dependence of the wear intensity of carbon-fiber plastics, reinforced with graphite fibers, on the heat capacity and energy intensity of the mated steel surface has been established. Based on the microstructural analysis, a layered mechanism of the surface destruction of carbon-fiber plastics was established caused by the rupture of bonds between the fiber parts, taking into consideration the direction of the fibers' location to the friction surface. The results reported here could provide practical recommendations in order to select the composition and structure of materials for the tribosystem "carbon-fiber plastic-metal" to be used in machine friction units based on the criterion of improved wear resistance

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Influence of the structure and thermomechanical properties of oriented carbon plastics on their tribotechnical characteristics

Dykha

Drobot

Oleksandrenko

et al. 2021

EEJET

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“…However, the choice in the engineering practice of the optimal compositions of metal-polymer bearings is practically not based on scientific methods of design calculations. At present, there are no adequate standards for the calculation of metalpolymer bearings, and the known in the literature calculation [2,[5][6][7][8][9][10][11][12][13] and numerical methods for the study of metal [14][15][16][17] and metal-polymer [18][19][20] sliding bearings have not yet found practical application due to the use of various simplifying conditions of wear-contact interaction of moving parts. Obviously primarily because they are based on the well-known Archard law of abrasive wear, which assumes a linear dependence of wear on contact pressure and sliding speed.…”

Section: Research Conditionsmentioning

confidence: 99%

Methodology of Calculation of Metal-polymer Sliding Bearings for Contact Strength, Durability and Wear

Chernets¹,

Chernets²,

Kindrachuk³

et al. 2020

Tribol. Ind.

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“…The estimation-experimental models of predicting the durability of cylindrical sliding tribo-systems, taking into consideration the dissipation of friction characteristics, are proposed in works [12,13]. At the same time, the physical prerequisites of the dissipative processes are not fully disclosed.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Exchange interaction and models of contact generation of disturbances in tribosystems

Zaspa

Dykha

Marchenko

et al. 2020

EEJET

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The physical mechanisms have been investigated that form and transform the corpuscular-vortex-wave thermal complexes of disturbances in contact tribosystems based on the quantum-mechanical exchange interaction. The presence of a contact gap determines the generation of pairs of quasi-particles-disturbances stabilized by wavelength and frequency. Internal instability and collapse processes in such a system of disturbances lead to the formation of defects in a tribopair's material and underlie the emergency friction regimes. This paper gives specific technical examples of the generation of thermal complexes at fretting, during the friction of sliding and rolling, and at cutting. It has been established that the destructive nature of the process of fretting at low values of reverse sliding speeds is caused by the generation and collapse of the corpuscular-vortex-wave thermal complexes. An example of acoustic friction emission in the ultrasonic region of the spectrum has been used to show the quantum nature of the disturbances generated by friction. The high-frequency spectrum of acoustic emission corresponds to the unbalanced composition of the disturbances and leads to the formation of wear particles. The exchange interaction in a tribosystem involving rolling on the plane has been considered. The results of statistical analysis of such rolling showed the existence of the effect of negative friction caused by the quantum generation of longwave disturbances. It has been demonstrated that the collapsed component of the generation of disturbances is significantly increased under the modes of materials destruction, including when cutting the materials. The corpuscular-vortex-wave mechanism of selective transfer and hydrogen wear in tribosystems has been described. It is shown that the properties of a servovite film under the mode of selective transfer are provided by the collapse processes in the system of disturbances. Similar processes at the vortex-wave transfer of hydrogen atoms in metals lead to the wear and destruction of the surface layer of friction

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Prediction the wear of sliding bearings

Cited by 19 publications

References 9 publications

Influence of the structure and thermomechanical properties of oriented carbon plastics on their tribotechnical characteristics

Influence of the structure and thermomechanical properties of oriented carbon plastics on their tribotechnical characteristics

Methodology of Calculation of Metal-polymer Sliding Bearings for Contact Strength, Durability and Wear

Exchange interaction and models of contact generation of disturbances in tribosystems

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