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Radial Friction Bearings Conditioned by Melt

  • E. O. Lagunova
  • M. A. Mukutadze
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

The paper presents a technique and an accurate implementation of a self-similar solution of the problem of calculating the hydrodynamic endless radial friction bearing coated by low-melting-point metal of bearing bush operating at a viscoelastic lubricant with the account of the dependence of viscosity of the lubricant and the shear modulus on temperature. Based on the equation of motion of the liquid lubricating material having viscoelastic properties (Maxwell liquid) for the case of a “thin layer”, with the dependence of the viscosity of the lubricant and the shear modulus on the temperature, the continuity equation and the energy dissipation rate for determining the function of formula \( \Phi \left( {\theta } \right) \), conditioned by the melt surface of the bearing bush coated by low-melting-point metal, the asymptotic solution for the zero and first approximation in powers of the small parameter K conditioned by the melt are found. As a result of problem solving, the velocity field and pressure in the lubricating layer and the molten layer are determined, as well as the value of the function \( \Phi _{ 1} \left( {\theta } \right) \) conditioned by the melt surface of the bearing bush coated by low-melting-point metal. The numerical analysis of the obtained analytical expressions for the load-bearing capacity and friction force with simultaneous consideration of important factors such as the viscosity of liquid viscoelastic lubricant, shear modulus, Deborah number, the parameter characterizing the dependence of viscosity on the lubricant, and shear modulus on temperature, allowed one to refine the tribotechnical design models in the following order: load-bearing capacity by 22%, frictional force by 27%.

Keywords

Hydrodynamics Low-melting coating Viscoelastic lubricant Molten surface of bearing bush 

Notes

Acknowledgements

The publication has been issued in the scope of realization of fellowship of OJSC “RZD” No. 2210370/22.12.20016 for the development of scientific and pedagogical schools in the area of the railway transport.

References

  1. 1.
    Kropachev DY, Grishin AA, Maslo AD (2012) Methods for the rapid measurement of the temperature of metal melt for the needs of machine-building enterprises. Cast Metall 3(66):126–127Google Scholar
  2. 2.
    Perelman VI (1964) Quick reference book of the chemist. Chemistry, Moscow-LeningradGoogle Scholar
  3. 3.
    Zadorozhnaya EA, Mukhortov IV, Levanov IG (2011) Application of non-Newtonian models of lubricating fluids in the calculation of complex loaded friction units for piston and rotor machines. Frict Lubr Mach Mech 7:22–30Google Scholar
  4. 4.
    Prokopiev VN, Boyarshinova AK, Zadorozhnaya EA (2005) Dynamics of a complex loaded bearing lubricated by a non-Newtonian liquid. Probl Mach Build Mach Reliab 6:108–114Google Scholar
  5. 5.
    Prokopiev VN, Zadorozhnaya EA, Karavaev VG, Leanov IG (2010) Perfection of the calculation method for complex loaded friction bearings lubricated with non-Newtonian oils. Probl Mach Build Mach Reliab 1:63–67Google Scholar
  6. 6.
    Wilson (1976) Grease with melt. Probl Frict Lubr 1:19Google Scholar
  7. 7.
    Beretta GP, Niro A, Silvestri M (1992) Friction bearings lubricated by their own melt or by product of sublimation. Works of the American Society of Engineers, vol 1, pp 86–90Google Scholar
  8. 8.
    Kotelnitskaya LI, Demdova NN (2002) Calculation of radial bearings with efficient work on lubrication with melt in turbulent mode. Bull Rostov State Transp Univ 2:18–23Google Scholar
  9. 9.
    Prikhodko VM, Kotelnitskaya LI (2001) Mathematical model of hydrodynamic lubrication during melting of bearing surface of radial bearing. Frict Tear 22(6):606–608Google Scholar
  10. 10.
    Akhverdiev КS, Mukutadze MA, Lagunova EO, Vasilenko VV (2017) Hydrodynamic calculation of a radial bearing lubricated by a melt of a fusible coating in the presence of a lubricant. Bull RSTU 2(66):129–135Google Scholar
  11. 11.
    Akhverdiev KS, Lagunova EO, Vasilenko VV (2017) Calculation model of a radial bearing lubricated by the melt, taking into account the dependence of viscosity on pressure. Bull DSTU 3(90):27–37Google Scholar
  12. 12.
    Vasilenko VV, Lagunova EO, Mukutadze MA (2017) Hydrodynamic calculation of a radial bearing lubricated by a melt of a fusible coating in the presence of a lubricant. Internet Magazine “Naukovedenie” 9(5). https://naukovedenie.ru/PDF/20TVN517.pdf
  13. 13.
    Lagunova EO (2017) Wedge-shaped sliding supports operating on viscoelastic lubricant material due to the melt, taking into account the dependence of viscosity and shear modulus on pressure. Int J Appl Eng Res 12(19):9120–9127Google Scholar
  14. 14.
    Lagunova EO (2017) Radial plain bearings operating on viscoelastic lubricant conditioned by the melt, taking into account the dependence of the viscosity of the lubricant and the shear modulus on the pressure. Int J Appl Eng Res 12(19):9128–9137Google Scholar
  15. 15.
    Vasilenko VV, Lagunova EO, Mukutadze MA, Prikhodko VM (2017) Calculation model of the radial bearing, caused by the melt, taking into account the dependence of viscosity on pressure. Int J Appl Eng Res 12(19):9138–9148Google Scholar
  16. 16.
    Akhverdiev КS, Mukutadze MA, Lagunova EO, Vasilenko VV (2017) Wedge-shaped sliding supports, operating on a micropolar lubricant, conditioned by the melt. Bull RSTU 3(67):8–15Google Scholar
  17. 17.
    Lagunova EO (2017) Simulation of wedge-shaped slip bearings taking into account the rheological properties of an electrically conductive lubricant. Bull SUSU. Series “Machine Building” 17(4):13–25.  https://doi.org/10.14529/engin170402CrossRefGoogle Scholar
  18. 18.
    Ng Pen Linearized (1965) Theory of turbulent lubricant flow. Theor Bases Eng Calc 3:157–162Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Rostov State Transport UniversityRostov-on-DonRussia

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