Smart Search 


3_2025_sen_6

Title of the article EVALUATION OF WEAR RESISTANCE BY THE FRICTION COEFFICIENT OF A MODIFIED RADIAL BEARING DESIGN IN A TURBULENT LUBRICANT FLOW
Authors

BOLGOVA Ekaterina A., Ph. D. Student of the Department “Higher mathematics”, Rostov State Transport University, Rostov-on-Don, 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.

MUKUTADZE Murman A., D. Sc. in Eng., Prof., Head of the Department “Higher mathematics”, Rostov State Transport University, Rostov-on-Don, 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 MATERIALS SCIENCE IN MECHANICAL ENGINEERING
Year 2025
Issue 3(72)
Pages 54–62
Type of article RAR
Index UDK 621.822.17
DOI https://doi.org/10.46864/1995-0470-2025-3-72-54-62
Abstract This paper presents a mathematical model for analyzing the operation of a modified radial plain bearing operating on a true viscous lubricant. The modified bearing design is distinguished by a non-standard profile of the bearing sleeve support and the presence of a polymer coating with an axial groove on the shaft surface. The developed mathematical model takes into account the key factors affecting the bearing operation: the viscosity of the lubricant, the bearing design parameters (including the geometric characteristics of the polymer coating with grooves and the shape of the sleeve bearing profile), as well as the effect of thermal and mechanical loads on the value of the working clearance. To simulate hydrodynamic processes in the lubricating layer, computational fluid dynamics and numerical methods were used, which made it possible to obtain detailed data on the distribution of pressure and velocity. The mathematical model is based on the equation of motion of a liquid lubricant in the “thin layer” approximation and the continuity equation. The model was validated by comparing the calculation results with laboratory test data, which confirms its adequacy and applicability for analyzing and optimizing the characteristics of such bearing units. The results of the study emphasize the significant role of the groove width in the polymer coating and the adaptation of the bearing surface profile to real operating conditions. The data obtained can be used to design and optimize bearing units with improved friction and wear characteristics.
Keywords modified radial bearing, turbulent flow, mathematical model, friction coefficient
  You can access full text version of the article.
Bibliography
  1. Sayfullaeva G., Negmatov S., Abed N., Negmatova K., Kamalova D. Issledovanie elektroprovodyashchikh kompozitsionnykh termoreaktivnykh polimernykh materialov i pokrytiy na ikh osnove dlya tribotekhnicheskogo naznacheniya [Research of electrically conductive composite thermoreactive polymer materials and coatings on their basis for tribotechnical purpose]. Universum: Tekhnicheskie nauki, 2020, no. 12(81), pp. 46–50 (in Russ.).
  2. Brundukov A.S., Kavaliova Ya.A. Eksperimentalnaya otsenka iznosostoykosti polimernykh materialov, primenyaemykh v porshnevom kompressornom oborudovanii [Experimental evaluation of wear resistance of polymer materials used in piston compressor equipment]. Mechanics of machines, mechanisms and materials, 2024, no. 1(66), pp. 65–70. DOI: https://doi.org/10.46864/1995-0470-2024-1-66-65-70 (in Russ.).
  3. Wen S.-Z., Zhong S.-D., Kan W.-Q., Zhao P.-S., He Y.-C. Experimental and theoretical investigation on the hydrochromic property of a Ni(II)-containing coordination polymer with an inclined 2D → 3D polycatenation architecture. Journal of molecular structure, 2022, vol. 1269. DOI: https://doi.org/10.1016/j.molstruc.2022.133753.
  4. Sheleg V.K., Ma M., Belotserkovsky M.A., Levantsevich M.A. Issledovanie formirovaniya dempfiruyushchikh pokrytiy iz polimerov i metallov [Study of application process of damping coatings made of polymers and metals]. Mechanics of machines, mechanisms and materials, 2023, no. 2(63), pp. 42–52. DOI: https://doi.org/10.46864/1995-0470-2023-2-63-42-52 (in Russ.).
  5. Negmatov S.S., et al. Issledovanie vyazkouprugikh i adgezionno-prochnostnykh svoystv i razrabotka effektivnykh vibropogloshchayushchikh kompozitsionnykh polimernykh materialov i pokrytiy mashinostroitelnogo naznacheniya [Research of viscoelastic and adhesion-strength property and development of effective vibration absorbing composite polymeric materials and coatings of mechanical engineering purpose]. Plasticheskie massy, 2020, no. 7–8, pp. 32–36. DOI: https://doi.org/10.35164/0554-2901-2020-7-8-32-36 (in Russ.).
  6. Ikromov N.A., Rasulov D.N. Obekty i metodiki issledovaniya kompozitsionnykh polimernykh materialov [Objects and methods of research of composite polymer materials]. Modern scientific researches and innovations, 2020, no. 10(114). Available at: https://web.snauka.ru/issues/2020/10/93640 (accessed January 12, 2025) (in Russ.).
  7. Polyakov R.N., Savin L.A. The method of long-life calculation for a friction couple “Rotor — Hybrid bearing”. Proc. 7th International conference on coupled problems in science and engineering “COUPLED PROBLEMS 2017”. Rhodes Island, 2017, pp. 433–440.
  8. Polyakov R.N., Savin L.A., Vnukov A.V. Matematicheskaya model beskontaktnogo palchikovogo uplotneniya s aktivnym upravleniem zazorom [Mathematical model of the inflammatory pullic seal with active management of the clearance]. Fundamental and applied problems of engineering and technology, 2018, no. 1(327), pp. 66–71 (in Russ.).
  9. Polyakov R., Majorov S., Kudryavcev I., Krupenin N. Predictive analysis of rotor machines fluid-film bearings operability. Vibroengineering procedia, 2020, vol. 30, iss. 3, pp. 61–67. DOI: https://doi.org/10.21595/vp.2020.21379.
  10. Vasilenko V.V., Kirishchieva V.I., Mukutadze M.A., Shvedova V.E. Issledovanie iznosostoykosti podshipnika skolzheniya c polimernym pokrytiem opornogo koltsa, imeyushchego kanavku [Investigation of the wear resistance of a journal bearing with polymer-coated grooved support ring]. Advanced engineering research (Rostov-on-Don), 2022, vol. 22, no. 4, pp. 365–372. DOI: https://doi.org/10.23947/2687-653-2022-22-4-365-372 (in Russ.).
  11. Khasyanova D.U., Mukutadze M.A. Povyshenie iznosostoykosti radialnogo podshipnika skolzheniya smazyvaemogo mikropolyarnymi smazochnymi materialami i rasplavami metallicheskogo pokrytiya [Increasing the wear resistance of a radial sliding bearing lubricated with micropolar lubricants and metal coating melts]. Problemy mashinostroeniya i nadezhnosti mashin, 2022, no. 4, pp. 46–53. DOI: https://doi.org/10.31857/S0235711922040101 (in Russ.).
  12. Khasyanova D.U., Mukutadze M.A. Issledovanie na iznosostoykost radialnogo podshipnika s nestandartnym opornym profilem s uchetom zavisimosti vyazkosti ot davleniya i temperatury [The researching on the wear resistance of a radial bearing with a non-standard support profile, taking into account the dependence of viscosity on pressure and temperature]. Problemy mashinostroeniya i avtomatizatsii, 2023, no. 3, pp. 42–49. DOI: https://doi.org/10.52261/02346206_2023_3_42 (in Russ.).
  13. Kirishchieva V.I. Issledovanie povysheniya iznosostoykosti radialnogo podshipnika, imeyushchego na nestandartnoy opornoy poverkhnosti polimernoe pokrytie s osevoy kanavkoy [Investigation of increasing the wear resistance of a radial bearing having a polymer coating with an axial groove on a non-standard bearing surface]. Journal of advanced research in technical science, 2023, no. 36, pp. 15–25. DOI: https://doi.org/10.26160/2474-5901-2023-36-15-25 (in Russ.).
  14. Shapovalov V.V., Kolesnikov V.I., Kharlamov P.V., Kornienko R.A., Petrik A.M. Improving the efficiency of the path – rolling stock system based on the implementation of anisotropic frictional bonds. Proc. International conference “Energy efficiency and energy saving in technical systems”. Rostov-on-Don, 2020. DOI: https://doi.org/10.1088/1757-899X/900/1/012011.
  15. Khasyanova D.U., Mukutadze M.A. Otsenka iznosostoykosti konstruktsii modifitsirovannogo radialnogo podshipnika skolzheniya s uchetom szhimaemosti smazochnogo materiala [Assessment of wear resistance of the design of a modified radial sleeve bearing taken into account the compressibility of the lubricant]. Problemy mashinostroeniya i avtomatizatsii, 2024, no. 3, pp. 66–71. DOI: https://doi.org/10.52261/02346206_2024_3_66 (in Russ.).