Studies on wear resistance of the radial bearing design taking into account rheological properties of micropolar lubricant
The article is devoted to the development and analysis of a model of the motion of a micropolar lubricant in the working gap of a radial plain bearing with a fluoroplastic-containing antifriction composite polymer coating and with a groove on the supporting surface. New models are obtained on the...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2023-09-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2023/%E2%84%963%20(187)%20(%D0%9E%D0%9D%D0%92)/5-14%20%D0%9C%D1%83%D0%BA%D1%83%D1%82%D0%B0%D0%B4%D0%B7%D0%B5%20%D0%9C.%20%D0%90.,%20%D0%90%D0%B1%D0%B4%D1%83%D0%BB%D1%80%D0%B0%D1%85%D0%BC%D0%B0%D0%BD%20%D0%A5.%20%D0%9D.,%20%20%D0%A8%D0%B2%D0%B5%D0%B4%D0%BE%D0%B2%D0%B0%20%D0%92.%20%D0%95.,%20%D0%91%D0%B0%D0%B4%D0%B0%D1%85%D0%BE%D0%B2%20%D0%93.%20%D0%90.,%20%D0%97%D0%B8%D0%BD%D0%BE%D0%B2%D1%8C%D0%B5%D0%B2%20%D0%9D.%20%D0%92..pdf |
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| Summary: | The article is devoted to the development and analysis of a model of the motion
of a micropolar lubricant in the working gap of a radial plain bearing with a
fluoroplastic-containing antifriction composite polymer coating and with a groove
on the supporting surface. New models are obtained on the basis of classical
equations in the «thin layer» approximation and the continuity equation, which
describes the turbulent mode of motion of a lubricant with micropolar rheological
properties. The results of the numerical analysis of the obtained models of existing
operational characteristics made it possible to obtain a quantitative assessment of
the effectiveness of the support profile with a fluoroplastic-containing antifriction
composite polymer coating with an axial groove. To complete the complex of
studies and verify theoretical developments, experimental studies are carried out.
The novelty of the work lies in the concretization of the technique of engineering
calculations for the design of an effective radial bearing with an antifriction polymer
coating with an axial groove on the bearing surface of the bearing bush, taking into
account the dependence of the rheological properties of a micropolar lubricant on
pressure and temperature in a turbulent mode, which makes it possible to estimate
the value of the main operational characteristics: hydrodynamic pressure, load ability
and coefficient of friction, as well as to expand the scope of practical application
of models for engineering calculations. Thus, the design of a radial bearing with a
polymer-coated support profile, a groove 3 mm wide, ensured a stable ascent of the
shaft on a hydrodynamic wedge, which experimentally confirmed the correctness
of the results of theoretical studies of a radial bearing with a diameter of 40 mm at
a sliding speed of 0,32–3 m/s, load 4,9–24,5 MPa. |
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| ISSN: | 1813-8225 2541-7541 |