Dynamic Responses of Rotor Drops onto Auxiliary Bearing with the Support of Metal Rubber Ring
Zhu Yili*, Zhang Yongchun
Identifiers and Pagination:Year: 2015
First Page: 1057
Last Page: 1061
Publisher Id: TOMEJ-9-1057
Article History:Received Date: 17/02/2014
Revision Received Date: 21/03/2015
Acceptance Date: 09/06/2015
Electronic publication date: 22/10/2015
Collection year: 2015
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In an active magnetic bearing (AMB) system, the Auxiliary bearings (ABs) are indispensable to protect the rotor and stator in case of AMB failure. Most of the former researches try to modify relevant design parameters of ABs to buffer the following impacts and heating after rotor drop. Based on the analysis of the disadvantages of traditional ABs, a new type of AB with the support of metal rubber ring is proposed to enhance the AB work performance in AMB system. Detailed simulation models containing rigid rotor model, contact model between rotor and inner race as well as AB system model after rotor drop are established. Then, using those established models the dynamic responses are simulated to obtain proper metal rubber ring support characteristics. Finally, relevant rotor drop experiments are carried out on the established AMB test bench. The experiment results verify the advantages of the new type ABs and the correctness of simulation analysis.