Impact dynamic behaviour of meshing loaded teeth in transmission drive rattle
The paper describes a model of impact dynamics of meshing gear teeth-pairs under medium to heavy loads and in presence of backlash. The model incorporates classical Hertzian impact, governed by instantaneous geometry of the contact and the prevailing kinematics of contiguous surfaces for pairs of helical teeth. It also includes the effect of flank friction, contributed by a combination of adhesive friction due to asperity-tip interactions, as well as viscous shear of partially lubricated conjunctions. The inclusion of such contact/impact models into gear pair dynamics sheds light on some of the spectral contributions noted from transmission systems under dynamic conditions.