Experience in using ceramics (Si3N4) as a material for rolling bearings of high-speed machines

• Autorzy: Dotsenko V. , Gnytko O. , Koveza Y. , Kuznetsova A. , Usik V.

Identyfikatory

DOI

10.5604/01.3001.0054.7777

• Języki publikacji: EN

Abstrakty

EN

Purpose: To analyse the influence of the material of the rolling elements (steel and ceramics) of a high-speed ball bearing on the stresses in the contact zone of the rolling elements and rings and on friction losses in the contact zone. Design/methodology/approach: The study considers the outer ring of an angular contact ball bearing, which is loaded with additional centrifugal force. A nonstationary nonlinear volumetric interaction problem between the ball and the raceway was solved to determine the contact angle using the “DYNA” application package. The values of contact stresses for ceramic and steel rolling elements of a hybrid ball bearing are determined, as well as the value of deformations of balls and raceways based on Hertz's theory. The specific friction power deals with the differential slipping of the rolling elements relative to the raceway was estimated. Findings: Analysis of the behaviour of the bearings at different rotation speeds showed that at rotational speeds of more than 7000 rad/s, bearings with ceramic rolling elements of the considered standard size have advantages in contact strength. In addition, it was found out that at high rotational speeds, the friction power of the ceramic rolling elements is almost two times less than the friction power of the steel rolling elements. Research limitations/implications: The research results relate to rolling ball bearings operating at a speed parameter dn of up to 4∙106 mm∙rpm and the analysis of friction losses is limited to losses from differential slip, which suggests further research of other components of losses. Practical implications: The study can justify the choice of bearing type (steel or ceramic rolling elements) depending on the operating speed and the lubrication and cooling system, which depends on the level of heat generation in the bearing. Originality/value: The work obtained original results of contact stresses and friction loss components for a certain type of bearing in a wide range of rotation speeds.

Słowa kluczowe

EN

ceramics and steel; rolling bearings; contact stresses; friction; friction power

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2024
• Tom: Vol. 125, nr 1
• Strony: 16--24
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Dotsenko V.

• Faculty of Aircraft Engines, National Aerospace University “Kharkiv Aviation Institute”, Kharkiv, Ukraine

• https://orcid.org/0000-0002-4785-4578

autor

Gnytko O.

• Faculty of Aircraft Engines, National Aerospace University “Kharkiv Aviation Institute”, Kharkiv, Ukraine

• https://orcid.org/0000-0002-6560-3262

autor

Koveza Y.

• Faculty of Aircraft Engines, National Aerospace University “Kharkiv Aviation Institute”, Kharkiv, Ukraine

• https://orcid.org/0000-0003-1131-1405

autor

Kuznetsova A.

• Faculty of Aircraft Engines, National Aerospace University “Kharkiv Aviation Institute”, Kharkiv, Ukraine

• https://orcid.org/0000-0001-5843-6569

autor

Usik V.

• Faculty of Aircraft Engines, National Aerospace University “Kharkiv Aviation Institute”, Kharkiv, Ukraine

• https://orcid.org/0000-0003-0452-3266

Bibliografia

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• [17] V. Dotsenko, O. Gnytko, Y. Koveza, A. Kuznetsova, Experimental Determination of Power Losses in Steel and Hybrid Rolling Bearings, in: D.D. Cioboată (ed), International Conference on Reliable Systems Engineering “ICoRSE – 2023”, ICoRSE 2023. Lecture Notes in Networks and Systems, vol. 762, Springer, Cham, 2023, 155-163. DOI: https://doi.org/10.1007/978-3-031-40628-7_13
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