Tribology and Materials | Volume 2 | Issue 3 | 2023 | 99-107
|
https://doi.org/10.46793/tribomat.2023.015
|
|
Thermal contact resistance for stationary and moving heat sources in angular contact ball bearings
Sebastian Cabezas
1,
György Hegedűs1,
Péter Bencs2
1 Institute of Machine Tools and Mechatronics, University of
Miskolc, Miskolc, Hungary
2 Institute of Energy Engineering and Chemical Machinery,
University of Miskolc, Miskolc, Hungary
Abstract: Sliding friction is a common tribological effect that
occurs between the contact surfaces of the inner components (inner race,
outer race and balls) of a spindle rolling bearing during operation.
This friction generally generates heat, which can affect the performance
of the rolling bearing. To date, numerous studies have assumed that the
contact surface between the inner components of the bearing is circular
and stationary. While this assumption has yielded adequate results, it
is not sufficient in the case of angular contact ball bearings, where
the contact surfaces are elliptical and could be treated as either
stationary or moving heat sources. This paper presents solutions for
both, stationary and moving heat sources for elliptical contact surfaces
in a spindle rolling bearing. The primary objective is to find the
thermal contact resistances which are dependent on the shape of contact,
the loads, the rotational speed and the material properties thereof,
applying the mathematical expressions developed by Muzychka and
Yovanovich. These expressions were used to calculate various thermal
resistances, providing results applicable to the analysis of thermal
models in spindle rolling elements. Through finite element analysis
(FEA) performed in Ansys Workbench, the stationary and moving heat
sources were compared, finding the heat distribution along the elements
of the bearing. The findings herein are suitable for the creation of
thermal networks in rolling bearings, which are essential to predict
their thermal behaviour.
Keywords: sliding friction, thermal contact resistance,
stationary heat source, moving heat source, temperature distribution.
Received: 13-09-2023, Revised: 28-09-2023, Accepted: 30-09-2023
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt,
and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.
2 Institute of Energy Engineering and Chemical Machinery, University of Miskolc, Miskolc, Hungary
Abstract: Sliding friction is a common tribological effect that occurs between the contact surfaces of the inner components (inner race, outer race and balls) of a spindle rolling bearing during operation. This friction generally generates heat, which can affect the performance of the rolling bearing. To date, numerous studies have assumed that the contact surface between the inner components of the bearing is circular and stationary. While this assumption has yielded adequate results, it is not sufficient in the case of angular contact ball bearings, where the contact surfaces are elliptical and could be treated as either stationary or moving heat sources. This paper presents solutions for both, stationary and moving heat sources for elliptical contact surfaces in a spindle rolling bearing. The primary objective is to find the thermal contact resistances which are dependent on the shape of contact, the loads, the rotational speed and the material properties thereof, applying the mathematical expressions developed by Muzychka and Yovanovich. These expressions were used to calculate various thermal resistances, providing results applicable to the analysis of thermal models in spindle rolling elements. Through finite element analysis (FEA) performed in Ansys Workbench, the stationary and moving heat sources were compared, finding the heat distribution along the elements of the bearing. The findings herein are suitable for the creation of thermal networks in rolling bearings, which are essential to predict their thermal behaviour.
Keywords: sliding friction, thermal contact resistance, stationary heat source, moving heat source, temperature distribution.
Received: 13-09-2023, Revised: 28-09-2023, Accepted: 30-09-2023
|
|
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license, which allows users to distribute, remix, adapt, and build upon the material in any medium or format for non-commercial purposes only, and only so long as attribution is given to the creator.