Étude théorique et expérimentale du comportement non-linéaire d'un engrenage droit induit par le jeu entre dents.

We are interesting in this study by a non-linear dynamic modelling of spur gears. This model allows to take into account the tooth backlash and also the non-linearity of the meshing stiffness associated to the instantaneous change of the number of teeth in contact. Our study concerns spur gears possessing, or not, modifications in form of linear tip relief. The goal was to analyse the ability of the introduced modelling for reproducing experimental results. These experimental results were obtained on a convenient test device for which characteristics, in particular the micro geometry of teeth, are perfectly controlled. To conclude, comparative results are encouraging even if several experimental non-linear phenomena are not reproduced by numerical simulations. Among these, one can cite the case of the period doubling route which takes place, for the analysed corrected gear, on the primary resonance. [ABSTRACT FROM AUTHOR]