Dynamic response of single stage bevel gear transmission in presence of local damage

Abstract

The dynamic behavior of a single stage bevel gear is investigated in this paper. One of the major parameters influencing this behavior is the mesh stiffness variation, geometrical and local damages errors.Mesh stiffness is modeled for the cases of straight or spiral bevel gears. Deterioration of one tooth which affects the gear mesh stiffness is considered in this work. Tooth crack is modeled and introduced in the system motion equations, by a reduction in the stiffness. It was observed that the vibration signatures are dominated by mesh frequency and harmonics. Moreover, amplitude modulation appears when a crack is included in the simulation, and simultaneously higher vibration levels are observed. © Springer Science+Business Media Dordrecht 2013.