Tribo-Dynamic Analysis of High-Speed Roller Bearings for Electrified Vehicle Powertrains

H. Questa; M. Mohammadpour; S. Theodossiades; C. P. Garner; S. R. Bewsher; Günter Offner

doi:10.1016/j.triboint.2020.106675

Tribo-Dynamic Analysis of High-Speed Roller Bearings for Electrified Vehicle Powertrains

H. Questa^*, M. Mohammadpour, S. Theodossiades, C. P. Garner, S. R. Bewsher, Günter Offner

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Roller 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 condition for tribological analysis. Results reveal that the EHL film thickness increases from 0.2 to 1.9 μm 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.

Original language	English
Article number	106675
Journal	Tribology International
Volume	154
DOIs	https://doi.org/10.1016/j.triboint.2020.106675
Publication status	Published - Feb 2021
Externally published	Yes

Keywords

Dynamics
Efficiency
EHL
Electrified powertrain
Roller bearings

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces, Coatings and Films
Surfaces and Interfaces

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10.1016/j.triboint.2020.106675

Cite this

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title = "Tribo-Dynamic Analysis of High-Speed Roller Bearings for Electrified Vehicle Powertrains",

abstract = "Roller 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 condition for tribological analysis. Results reveal that the EHL film thickness increases from 0.2 to 1.9 μm 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.",

keywords = "Dynamics, Efficiency, EHL, Electrified powertrain, Roller bearings",

author = "H. Questa and M. Mohammadpour and S. Theodossiades and Garner, {C. P.} and Bewsher, {S. R.} and G{\"u}nter Offner",

year = "2021",

month = feb,

doi = "10.1016/j.triboint.2020.106675",

language = "English",

volume = "154",

journal = "Tribology International",

issn = "0301-679X",

publisher = "Elsevier Inc.",

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TY - JOUR

T1 - Tribo-Dynamic Analysis of High-Speed Roller Bearings for Electrified Vehicle Powertrains

AU - Questa, H.

AU - Mohammadpour, M.

AU - Theodossiades, S.

AU - Garner, C. P.

AU - Bewsher, S. R.

AU - Offner, Günter

PY - 2021/2

Y1 - 2021/2

N2 - Roller 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 condition for tribological analysis. Results reveal that the EHL film thickness increases from 0.2 to 1.9 μm 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.

AB - Roller 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 condition for tribological analysis. Results reveal that the EHL film thickness increases from 0.2 to 1.9 μm 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.

KW - Dynamics

KW - Efficiency

KW - EHL

KW - Electrified powertrain

KW - Roller bearings

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U2 - 10.1016/j.triboint.2020.106675

DO - 10.1016/j.triboint.2020.106675

M3 - Article

SN - 0301-679X

VL - 154

JO - Tribology International

JF - Tribology International

M1 - 106675

ER -

Tribo-Dynamic Analysis of High-Speed Roller Bearings for Electrified Vehicle Powertrains

Abstract

Keywords

ASJC Scopus subject areas

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