Journal of Theoretical
and Applied Mechanics
0, 0, pp. , Warsaw 0

Effect of cracked tooth on the dynamic response of simple gearbox with flexible coupling for acyclism operation

Ahmed Hammami, Atef Hmida, Fakher Chaari, Mohamed Taoufik Khabou, Mohamed Haddar
In this paper, the effect of cracked tooth on the dynamic response of a simple gearbox with flexible coupling is studied. The gearbox is driven by a combustion engine through a flexible coupling for which Nelson and Crandall’s model is used. The acyclism regime is generated by a diesel engine inducing fluctuations of speed, torque and meshing stiffness. In addition, a cracked tooth of the wheel gear is modelled by lowering the meshing stiffness. After solving the equations of motion by using the Newmark method, joint time-frequency analysis and envelope spectrum are used to characterize the dynamic response of the defected gearbox.
Keywords: Acyclism; cracked spur gearbox; dynamic behavior; elastic coupling

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