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Modal analysis of gearbox transmission system in bucket wheel excavator

Karray M., Feki N., Khabou M. T., Chaari F., Haddar M.

Journal of Theoretical and Applied Mechanics

2017

Vol. 55 nr 1

253--264

Planetary gears are widely used in modern machines as ones of the most effective forms of power transmission. In this paper, a special configuration of a gearbox composed of one stage spiral bevel gear and a two stage helical planetary gear used in a bucket wheel excavator gearbox is presented to investigate its modal properties. A lumped-parameter model is formulated to obtain equations of motion and the eigenvalue problem is solved. The modes are presented in low-frequency and high-frequency bands. Distributions of modal kinetic and strain energies are studied.