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Variation in contact load at the most loaded position of the outer raceway of a bearing in high-speed train gearbox

Variation in contact load at the most loaded position of the outer raceway of a bearing in... For the fatigue failure and tribological property of a rolling element bearing, the contact load variation plays a significant role while the most loaded position of the bearing outer raceway takes the greatest risk of failure. This paper focuses on the variation in contact load on the most loaded position of the outer raceway of a gearbox bearing in high-speed train. Under operation conditions of different input speeds and torques, the dynamic contact load distribution in a gearbox bearing of high-speed train was measured by instrumenting the bearing with strain gauges. The most loaded position was identified accordingly and the features and reasons of the variation in contact load on this position were suggested. Three factors were found to have varying degrees of impact on the contact load variation under different gear meshing conditions: modal vibration of the cage or shaft, radial geometrical differences among the rollers and vibration of the gearbox housing.Graphic abstract[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Acta Mechanica Sinica" Springer Journals

Variation in contact load at the most loaded position of the outer raceway of a bearing in high-speed train gearbox

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Publisher
Springer Journals
Copyright
Copyright © The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature 2021
ISSN
0567-7718
eISSN
1614-3116
DOI
10.1007/s10409-021-01141-8
Publisher site
See Article on Publisher Site

Abstract

For the fatigue failure and tribological property of a rolling element bearing, the contact load variation plays a significant role while the most loaded position of the bearing outer raceway takes the greatest risk of failure. This paper focuses on the variation in contact load on the most loaded position of the outer raceway of a gearbox bearing in high-speed train. Under operation conditions of different input speeds and torques, the dynamic contact load distribution in a gearbox bearing of high-speed train was measured by instrumenting the bearing with strain gauges. The most loaded position was identified accordingly and the features and reasons of the variation in contact load on this position were suggested. Three factors were found to have varying degrees of impact on the contact load variation under different gear meshing conditions: modal vibration of the cage or shaft, radial geometrical differences among the rollers and vibration of the gearbox housing.Graphic abstract[graphic not available: see fulltext]

Journal

"Acta Mechanica Sinica"Springer Journals

Published: Oct 20, 2021

Keywords: High-speed train gearbox; Instrumented bearing; Load distribution; Contact load variation

References