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Transient non-Newtonian elastohydrodynamics of rough meshing hypoid gear teeth subjected to complex contact kinematics

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journal contribution
posted on 2021-12-16, 13:46 authored by Gajarajan Sivayogan, Ramin RahmaniRamin Rahmani, Homer Rahnejat
Predictions are provided for mixed elastohydrodynamic conditions of meshing hyoid gear teeth pairs of light truck differentials. Under transient conditions, pertaining to vehicle cruising or in urban driving, the lubricant is subjected to non-Newtonian traction. The meshing teeth are subjected to complex kinematics, comprising rolling, sliding and squeeze film motions. Furthermore, instantaneously varying angled lubricant flow into the contact constitutes a precession of contact footprint, further complicating the prevailing conditions. The inclusion of all these interacting kinematics shows that the lubricant film thickness, shear characteristics and transmission efficiency are significantly affected by the ensuing transience. This cannot be adequately represented by the usual quasi-steady analyses. The in-depth detailed analysis of the hypoid gear pairs of vehicular differentials constitutes the main contribution of the paper.

Funding

EPSRC Centre for Doctoral Training in Embedded Intelligence

Engineering and Physical Sciences Research Council

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History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology International

Volume

167

Publisher

Elsevier BV

Version

  • AM (Accepted Manuscript)

Rights holder

© Elsevier

Publisher 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.2021.107398.

Acceptance date

2021-12-05

Publication date

2021-12-10

Copyright date

2021

ISSN

0301-679X

Language

  • en

Depositor

Dr Ramin Rahmani. Deposit date: 16 December 2021

Article number

107398

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