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Study on Several Problems of Magnetorheological Elastomer Vibration Isolators Design

WANG Yu-fei;HE Lin;YANG Xue

2011, 31 (3): 129-132. DOI: 10.3969/j.issn.1006-1355-2011.03.030

Abstract （1729）

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Magnetorheological (MR) elastomer is a new MR material, whose rheological characteristics are controllable and invertible. It has the advantage of very fast response and low energy consuming, and becomes more and more attractive because of its wide prosperity in engineering application. Based on current research, some problems in MR elastomer isolator’s design, such as the method of developing practical MR elastomers, the material and design of magnetic circuit, etc., are systematically studied. Some important issues are put forward for further study.

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《Experimental Study on the Performance of MR Damper》

SHU Li-hong;WANG Yu-fei

2010, 30 (3): 5-8. DOI: 10.3969/j.issn.1006-1355.2010.03.002

Abstract （2109）

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Based on the working principle and the simplified model of MR damper, a series of experimental study on the damper force, energy dissipation and the response time under different excitation amplitude, frequency and control current is performed. The results indicate that the MR damper has a high effectiveness for energy dissipation, and the energy dissipation increases with the increasing of the excitation amplitude, frequency and control current. The response time of the MR damper does not change obviously with the control current changing, but decreases rapidly with the increase of vibration speed.

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《Investigation on Electromagnetic Coils of Multistage Pistontype MR Damper》

WANG Yu-fei;SHU Li-hong;HE Lin

2010, 30 (2): 142-145. DOI: 10.3969/j.issn.1006-1355.2010.02.142

Abstract （2161）

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In this paper, the advantages of multistage pistontype MR damper are analyzed. The characteristics of the electromagnetic coils are systematically investigated. The simulation model for the MR damper is established and analyzed by means of the finite element software of Maxwell. From the model analysis, it is shown that to raise the utilization rate of the magnetic circuit, the electromagnetic coils in the damper should be connected in parallel form and conducted with inverse current. In order to improve the distribution of magnetic flux and guarantee the uniform distribution of magnetic induction in the dampers gap, the effective length in the magnetic circuit should be adjusted and trapezoidal shaped section for the piston alveolar should be adopted.