Engineering Mechanics

Proceedings Vol. 11 (2005)

ENGINEERING MECHANICS 2005

Copyright © 2005 Institute of Mechanics of Solids, Faculty of Mechanical Engineering, Bruno University of Technology, Brno

 

Hajžman M., Zeman V.
pages 103 - +10p., full text

Gearboxes and similar machines containing rotating parts are com- plex systems with complicated structure and couplings. Generally they can be de- composed into the more simple subsystems. These subsystems are usually rotating shafts with gears joined by gear couplings and housing coupled with rotating shafts by bearings. The contribution is aimed at the mathematical modelling of gearboxes considered including their interior rotating shaft system and housing. The used bearing model respects real number of rolling elements and roller contact forces acting between the journals and the outer housing. The model of a complete gear- box is created using the modal synthesis method. The kinematic transmission errors in gear couplings are viewed as sources of excitation. Vibration and noise analysis of the gearbox housing is performed by means of the created model and possible analysis procedures are discussed. The presented methodology is applied to the simple test-gearbox.

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