graduate student
Rostov-on-Don, Rostov-on-Don, Russian Federation
employee
Rostov-on-Don, Rostov-on-Don, Russian Federation
BBK 344 Общее машиностроение. Машиноведение
The results of this study make it possible to improve understanding of viscous lubricant movement in radial sliding bearings with a polymer coating and a groove on the shaft surface. The studies show that the available grooves on the shaft surface affect the pressure distribution and lubricant viscosity, which, in its turn, influence the tribotechnical parameters of the bearing. The introduction of grooves can help improve the lubrication characteristics of the bearing with a higher effective distribution of lubricant over the machining gap. Study method: to describe the movement of a lubricant, a model was used that includes the continuity equation and studies the change in viscosity from pressure. The calculations and experiments carried out confirm the adequacy of the proposed model, which indicates the possibility of its practical application for engineering analysis and design. The data obtained show that the available grooves have a successful effect-this increases the load-carrying capacity of the bearing and decreases the friction factor and removes wear on the contact surfaces. The novelty of the work: This technique includes an integrated approach to modeling the interaction of surfaces, taking into account both the geometric features of the groove and the properties of the polymer coatings used. An important aspect of the work novelty is not only the development of a mathematical model, but also its validation based on expert data. Conclusion: The analysis of wear resistance confirms that the combination of a fluoroplastic coating and a groove on the shaft surface allows for a more uniform load distribution. This prevents local overloads and excessive heating, leading to early bearing failure. Having grooves with 4 mm width on the shaft surface can also lead to better lubricant circulation.
bearing, evaluation, wear resistance, coating, groove, hydrodynamic mode, verification
1. Khasyanova DU, Mukutadze MA. Increasing the wear resistance of a radial sliding bearing lubricated with micropolar lubricants and melts of a metal coating. Journal of Machinery Manufacture and Reliability. 2022;4:46-53. DOIhttps://doi.org/10.31857/S0235711922040101.
2. Polyakov R, Savin L. The method of Long-life Calculation for a Friction Couple «Rotor – Hybrid Bearing». Proceedings of the 7th International Conference on Coupled Problems in Science and Engineering,2017: COUPLED PROBLEMS; Rhodes Island; 2017. p. 433-440.
3. Polyakov RN, Savin LA, Vnukov AV. Mathematical model of a contactless finger seal with active gap control. Fundamental and Applied Problems of Technics and Technology. 2018;1(327):66-71.
4. Negmatov SS, Abed NS, Saidakhmedov RH. Research of viscoelastic and adhesion-strength property and development of effective vibration absorbing composite polymeric materials and coatings of mechanical engineering purpose. Plasticheskie Massi. 2020;(7-8):32-36. Available from: https://doi.org/10.35164/0554-2901-2020-7-8-32-36.
5. Polyakov R, Majorov S, Kudryavcev I, Krupenin N. Predictive analysis of rotor machines fluid-film bearings operability. Vibroengineering Procedia. 2020;30:61-67. DOIhttps://doi.org/10.21595/vp.2020.21379
6. Kornaeva EP. Application of artificial neural networks to diagnostics of fluid-film bearing lubrication. IOP Conference Series: Materials Science and Engineering. 2020;734:012154. DOIhttps://doi.org/10.1088/1757-899X/734/1/012154.
7. Shutin DV, Polyakov RN. Active hybrid bearings as mean for improving stability and diagnostics of heavy rotors of power generating machinery. IOP Conference Series: Materials Science and Engineering. 2020;862:032098. DOI 10/1088/1757-899X/862/3/032098.
8. Zinoviev VE, Kharlamov PV, Zinoviev NV, Kornienko RA. Analysis of factors affecting the strength of fixed bonds assembled using metal-polymer compositions. IOP Conference Series: Materials Science and Engineering. 2020. p. 012009. DOIhttps://doi.org/10.1088/1757-899X/900/1/012009. – EDN TLACUN.
9. Kharlamov PV. Monitoring measurements in elastic-dissipative characteristics for solving tasks on studying tribological processes in the «railway – rolling stock» system. Vestnik RGUPS. 2021;1:122-129.
10. Kharlamov PV. Design of system for friction supply modifiers to friction surfaces of tribological contact «Wheel-Rail». Vestnik RGUPS. 2021;3:37-45.
11. Kharlamov PV. Study of formation of secondary structures of frictional transfer on surface of steel samples in implementation of metal-plating technology. Assembly in Mechanical Engineering, Equipment Making. 2021; 12; 556-560.
12. Shapovalov VV, Shcherbak PN, Bogdanov VM. Improving the efficiency of the “wheel — rail” friction system. Russian Railway Science Journal. 2019;78(3):177-182.
13. Shapovalov VV. Improving the efficiency of the path – rolling stock system based on the implementation of anisotropicfrictional bonds. IOP Conference Series: Materials Science and Engineering. 2020;900(1):012011. DOIhttps://doi.org/10.1088/1757-899X/900/1/012011.
14. Shapovalov V. V., Migal Yu. F., Ozyabkin A. L. [et al.]. Metal plating of the friction working surfaces of the wheel-rail pair. Friction and wear. 2020; 41(4); 464-474. DOIhttps://doi.org/10.3103/S1068366620040121.
15. Kolesnikov IV, Mukutadze AM, Avilov VV. Ways of increasing wear resistance and damping properties of radial bearings with forced lubricant supply. Proceedings of the 4th International Conference on Industrial Engineering, 2018: Lecture Notes in Mechanical Engineering (ICIE 2018). p. 1049-1062.
16. Akhverdiev KS, Mukutadze AM, Zadorozhnaya NS. Damper with a porous element for bearing supports. Friction and Wear. 2016;37(4):502-509.
17. Akhverdiev KS, Zadorozhnaya NS, Mukutadze AM. Calculation model of a composite cylindrical bearing operating in a stable mode with incomplete filling of the gap with lubricant. Journal of Machinery Manufacture and Reliability. 2016;3:64-69.
18. Khasyanova DU, Mukutadze MA, Mukutadze AM. Mathematical model for a lubricant in a sliding bearing with a fusible coating in terms of viscosity depending on pressure under an incomplete filling of the working gap. Journal of Machinery Manufacture and Reliability. 2021;50(5):405-411. DOIhttps://doi.org/10.3103/S1052618821050083
19. Mukutadze MA, Lagunova EO. Mathematical model of a lubricant in a bearing with a fusible coating on the pilot and irregular slider profile. Proceedings of the 7th International Conference on Industrial Engineering (ICIE 2021); 2022. p. 834-840.
