Isothermal elastohydrodynamic lubrication analysis of heavily loaded hypoid gear pairs
Leonidas Paouris
Stephanos Theodossiades
Miguel De la Cruz
Homer Rahnejat
Adam Kidson
Gregory Hunt
William Barton
2134/17730
https://repository.lboro.ac.uk/articles/conference_contribution/Isothermal_elastohydrodynamic_lubrication_analysis_of_heavily_loaded_hypoid_gear_pairs/9554153
A numerical model able to predict the pressure
distribution and the film thickness in heavily loaded
elliptical EHL contacts is developed and presented in
this study. The operating conditions, such as the contact
load and the velocities of the mating surfaces, are
representative of the corresponding conditions present
in automotive differential hypoid gear pair units. The
EHL solver presented is able to predict the minimum
and central film thickness of the lubricating oil as well
as the pressure distribution assuming isothermal and
Newtonian conditions. Results are presented for a full
quasi-static meshing cycle. A comparison between the
numerically calculated values of the central and the
minimum film thickness is performed against the
corresponding values produced using the
Chittenden-Dowson formula. A very good agreement is
observed between the values of the central film
thickness. However, it is shown that the minimum film
thickness values using the Chittenden-Dowson formula
can deviate up to 40% compared with the corresponding
values which are calculated numerically.
2015-06-08 08:14:07
untagged
Mechanical Engineering not elsewhere classified