Experimental investigation into magnetorheological damper subjected to impact loads

Abstract

A good mechanical model of magnetorheological damper (MRD) is essential to predict the shock isolation performance of MRD in numerical simulation. But at present, the mechanical models of MRD were all derived from the experiment subjected to harmonic vibration loads. In this paper, a commercial MRD (type RD-1005-3) manufactured by Lord Corporation was studied experimentally in order to investigate its isolation performance under the impact loads. A new mechanical model of MRD was proposed according to the data obtained by impact test. A good agreement between the numerical results and test data was observed, which showed that the model was good to simulate the dynamic properties of MRD under impact loads. It is also demonstrated that MRD can improve the acceleration and displacement response of the structure obviously under impact loads.

Keywords

magnetorheological damper / mechanical model / impact loads

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