CUED Publications database

Dynamic properties of superconducting magnetic bearings

Coombs, TA and Cardwell, DA and Campbell, AM (1997) Dynamic properties of superconducting magnetic bearings. IEEE Transactions on Applied Superconductivity, 7. pp. 924-927. ISSN 1051-8223

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Abstract

The potential use of YBa 2j as an active component in a magnetic bearing is being investigated. Although the load bearing capacity is high and increases with the square of the magnetic field trapped, the stiffness is low. Both the stiffness and the lévitation height are a function of the loading history of the bearing. At Cambridge we have been investigating the effects of dynamic loading such as single large excursions from steady state loads and cyclically applied loads such as vibrations. Since a superconducting bearing has little inherent damping cyclic loads applied at or near its natural frequency can have catastrophic effects. The information being gathered at Cambridge will be used to enable these effects to be mitigated in the bearing design process. © 1997 IEEE.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Electronics, Power & Energy Conversion
Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:08
Last Modified: 28 Nov 2014 19:06
DOI: