Article (Scientific journals)
Influence of the balls kinematics of axially loaded ball bearings on Coulombic frictional dissipations
Bozet, Jean-Luc; Servais, Christophe
2017In Journal of Tribology, 139 (1)
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Abstract :
[en] Ball bearings have been used for a long time. Nevertheless, the description of their behavior remains incomplete in spite of the large number of surveys dedicated to ball bearings. Particularly, the exact balls kinematics has still to be addressed in depth. This paper proposes a new way to calculate the balls kinematics by using a simplified quasi-static approach for dry lubricated and axially loaded ball bearings. This method does not use the classical restrictive race control assumptions. More specifically, the role played by the balls kinematics is emphasized by means of the power dissipated within contacts between balls and races. The need for a correct evaluation of the balls behavior is illustrated by using an example, viz. a ball bearing of cryogenic engine turbopump. Indeed, the dissipated power is one of the main concerns in this particular case.
Disciplines :
Mechanical engineering
Author, co-author :
Bozet, Jean-Luc ;  Université de Liège > Department of Chemical Engineering > Chimie appliquée - Cryotribologie
Servais, Christophe ;  Université de Liège > Department of Chemical Engineering > Chimie appliquée - Cryotribologie
Language :
English
Title :
Influence of the balls kinematics of axially loaded ball bearings on Coulombic frictional dissipations
Publication date :
January 2017
Journal title :
Journal of Tribology
ISSN :
0742-4787
Publisher :
American Society of Mechanical Engineers
Volume :
139
Issue :
1
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 13 April 2016

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