Shock and Vibration

Shock and Vibration / 2006 / Article

Open Access

Volume 13 |Article ID 251963 |

Alvaro Chavez, Heinz Ulbrich, Lucas Ginzinger, "Reduction of Contact Forces in a Rotor-Stator-System in case of Rubbing through Active Auxiliary Bearing", Shock and Vibration, vol. 13, Article ID 251963, 14 pages, 2006.

Reduction of Contact Forces in a Rotor-Stator-System in case of Rubbing through Active Auxiliary Bearing

Received19 Jul 2006
Revised19 Jul 2006


The present manuscript deals with the problem of rotor-stator rubbing. Due to performance increase in rotating machinery, rubbing processes happen more frequently. These are very complicated mechanisms that lead to high impact loads, vibrations and instability. The authors propose a control technique by using an active auxiliary bearing to overcome the problem of rubbing. The control concept enables a transition of the rotor towards a contact situation (with an auxiliary bearing) without rebounding and loss of contact. To investigate the practical feasibility of this approach, numerical simulation has been used to show that using this control concept the impulse (and contact force respectively) can be significantly decreased. Experiments to validate the theoretical findings are already in progress and will be published soon.

Copyright © 2006 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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