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Shock and Vibration
Volume 2016, Article ID 8086504, 7 pages
Research Article

A Novel Design of Magnetorheological Damper with Annular Radial Channel

School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China

Received 14 May 2015; Revised 6 August 2015; Accepted 6 September 2015

Academic Editor: Rafał Burdzik

Copyright © 2016 Shisha Zhu et al. 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.


With the development of automotive vibration technology, the semiactive suspension system with adjustable damping force and high reliability is taken seriously. The magnetorheological damper (MRD) that applies intelligent material (magnetorheological fluid) is the key element of this system. It can achieve a continuous and adjustable damping and then reaches the purpose of comfort. In order to improve the damping effect of MRD, this paper presents a MRD, which has magnetorheological (MR) effect along annular radial channel. The paper completely designs the structure and magnetic circuit of MRD. Based on the theory of electromagnetism and MR fluid dynamics, the paper analyzes and tests the external characteristics of the MRD by the MATLAB/Simulink and the vibration experiment. The results compared with ordinary MRD reveal that the damping force obviously increases and has wide adjustable range, thus verifying the reasonableness of the damper design.