Sivayogan_et_al_Trib_Int.pdf (2.39 MB)
Transient non-Newtonian elastohydrodynamics of rough meshing hypoid gear teeth subjected to complex contact kinematics
journal contributionposted 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.
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- Mechanical, Electrical and Manufacturing Engineering
Published inTribology International
- AM (Accepted Manuscript)
Rights holder© Elsevier
Publisher statementThis 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.