Abstract
A twin-tube magnetorheological (MR) damper with meandering channel is proposed in this paper. The proposed MR damper has a longer damping channel than conventional MR dampers due to the structure of twin-tube and the design of meandering channel. The magnetic circuit model and the damping force model of the proposed MR damper are established and finite element analysis is conducted. In addition, experimental research is conducted on the temperature characteristics and damping characteristics of the proposed MR damper. Results demonstrate that the theoretical and experimental maximum damping forces of the proposed MR damper are in good agreement. The temperature of the coil surface changes very little under a current of 0.5 A. The maximum damping force of the proposed MR damper can reach 4523 N and the maximum dynamic range is 10.76 at the current of 0.5A. Furthermore, the maximum dynamic range of the proposed MR damper is larger than that of other conventional MR dampers in references.
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