Premium
Theoretical and experimental studies on a new reversible magnetorheological damper
Author(s) -
Yan Weiming,
Ji Jinbao,
Dong Bin,
Ge Huijuan
Publication year - 2011
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.343
Subject(s) - damper , magnetorheological fluid , magnetorheological damper , magnetic circuit , engineering , power (physics) , structural engineering , reliability (semiconductor) , magnet , work (physics) , control theory (sociology) , mechanical engineering , computer science , physics , control (management) , quantum mechanics , artificial intelligence
As a smart material with special rheological properties, the magnetorheological (MR) fluid can be used to produce ideal semi‐active control devices, i.e. MR dampers. In consideration of the limitations of current MR damper, a reversible MR damper (RMR damper) is presented in this paper. For the new type damper, both permanent magnets and magnetic coils are installed. Hence, the RMR damper can operate with maximal damping force once power fails, and the damping force can also be adjusted to the demand value with power supply so as to raise the reliability and practicability in earthquake. The magnetic circuit of RMR damper is developed, and the design theory is described. A full‐scale RMR damper with a bypass valve is manufactured, and several reliability tests are presented. The results demonstrate that the magnetic circuit can change the magnetic flux density stably and reliably under the applied current and the performance is excellent. Based on the results, some improvement is presented to the damper. Copyright © 2009 John Wiley & Sons, Ltd.