Questa et. al - TRIBINT-D-20-01405R1 - R1.pdf (3.01 MB)
Download fileTribo-dynamic analysis of high-speed roller bearings for electrified vehicle powertrains
journal contribution
posted on 2020-09-24, 15:42 authored by Harry QuestaHarry Questa, Mahdi Mohammad-PourMahdi Mohammad-Pour, Stephanos TheodossiadesStephanos Theodossiades, Colin GarnerColin Garner, Rickie Bewsher, Guenter OffnerRoller bearings are critical components in electrified powertrains. At high speeds, the critical role of the elastohydrodynamic lubrication (EHL) cannot be ignored, necessitating a tribo-dynamic analysis. This paper investigates the behaviour of roller bearings under operating conditions present in high-speed electrified powertrains. The bearing motion is obtained experimentally using a novel experimental rig. The bearing centre’s orbital motion is acquired from the experiment and used as the boundary conditions for tribological analysis. Results reveal that the EHL film thickness increases from 0.2 to 1.9 micrometres across a speed range of 0 - 15 000 rpm. A comparison with conventional dry contact analysis shows that roller load can be underestimated if the lubricant film is neglected in the roller-race contact deformation.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Tribology InternationalVolume
154Publisher
ElsevierVersion
- AM (Accepted Manuscript)
Rights holder
© Elsevier LtdPublisher statement
This paper was accepted for publication in the journal Tribology International and the definitive published version is available at https://doi.org/10.1016/j.triboint.2020.106675.Acceptance date
2020-09-21Publication date
2020-09-24Copyright date
2020ISSN
0301-679XPublisher version
Language
- en