Appendix4_5_2.pdf (1.15 MB)
Multi-physics investigations on the dynamics of differential hypoid gears
journal contribution
posted on 2014-03-11, 13:55 authored by Mahdi Mohammadpour, Stephanos TheodossiadesStephanos Theodossiades, Homer RahnejatVehicular differential hypoid gears play an important role on the Noise, Vibration and Harshness
(NVH) signature of the drive train system. Additionally, the generated friction between their mating
teeth flanks under varying load-speed conditions is a source of power loss in a drive train, whilst
absorbing some of the vibration energy. The paper deals with the coupling between system
dynamics and analytical tribology in a multi-physics, multi-scale analysis. Elastohydrodynamic
lubrication of elliptical point contact of partially conforming hypoid gear teeth pairs with non-
Newtonian thermal shear of a thin lubricant film is considered, including boundary friction as the
result of asperity interactions on the contiguous surfaces. Tooth Contact Analysis (TCA) has been
used to obtain the input data required for such an analysis. The dynamic behaviour and frictional
losses of a differential hypoid gear pair under realistic operating conditions are therefore
determined. The detailed analysis shows a strong link between NVH refinement and transmission
efficiency, a finding not hitherto reported in literature.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
MOHAMMADPOUR, M., THEODOSSIADES, S. and RAHNEJAT, H., 2014. Multi-physics investigations on the dynamics of differential hypoid gears. Journal of Vibration and Acoustics, 136 (4), 041007.Publisher
© ASMEVersion
- AM (Accepted Manuscript)
Publication date
2014Notes
This article was published in the Journal of Vibration and Acoustics [© ASME] and the definitive version is available at: http://dx.doi.org/10.1115/1.4027403Publisher version
Book series
ASME Paper No; VIB-13-1420Language
- en