Modeling of lubrication modes of plain bearings of tribotechnical pulse loading systems 

Vladimir Ya. Savitsky, Doctor of engineering sciences, professor, professor of the sub-department of general professional disciplines, Branch of the Military Academy of Logistics named after General Army A.V. Khrulev (Military city, Penza-5, Russia), E-mail: w.savis@gmail.ru
Evgeny N. Kalinin, Candidate of physical and mathematical sciences, associate professor, associate professor of the sub-department of general physics and methods of teaching physics, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: o-fizika@yandex.ru
Tatiana S. Budimirova, Lecturer of the sub-department of general professional disciplines, Branch of the Military Academy of Logistics named after General Army A.V. Khrulev (Military city, Penza-5, Russia), E-mail: demeshoffa@mail.ru
Aleksandr A. Krechin, Cadet, Branch of the Military Academy of Logistics named after General Army A.V. Khrulev (Military city, Penza-5, Russia)

Background. In complex tribological systems (CTS) of pulse loading, the reliability of friction units and the ability to predict their operating time before failure come to the forefront. Due to the ease of maintenance, the possibility of using in aggressive environments and contaminated conditions, high resistance to radial and vibration loads, themass use of plain bearings in such systems is justified. In this regard, timely diagnostics and prediction of operating time before failure of a plain bearing becomes an urgent problem. The purpose of the work is to mathematically model a plain bearing and calculate the lubrication boundary in the contact area. Materials and methods. The Reynolds equation for lubricant flow in a thin layer of a plain bearing is solved and the boundaries of the contact area are determined. Results. It is shown that on the curves of the dependence of the contact pressure on the coordinate in the contact area, a characteristic maximum appears, the position of which is asymmetrical relative to the boundaries of the lubricant. The coordinates of the lubricant boundary for the sliding bearing of the lifting mechanism of an artillery gun are found. Conclusions. The obtained results will allow us to find the mass flow rate of lubricant during servicing plain bearings, calculate the magnitude of sliding friction forces, and select the type of lubricant that increases the service life of the bearing.

plain bearing, dynamic viscosity, Reynolds equation, lubricant film thickness, contact pressure

Savitsky V.Ya., Kalinin E.N., Budimirova T.S., Krechin A.A. Modeling of lubrication modes of plain bearings of tribotechnical pulse loading systems. Izvestiya vysshikh uchebnykh zavedeniy. Povolzhskiy region. Tekhnicheskie nauki = University proceedings. Volga region. Engineering sciences. 2024;(4):157–166. (In Russ.). doi: 10.21685/2072-3059-2024-4-13