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A NEW MR FLUID-ELASTOMER (MRF-E) VIBRATION ISOLATOR

In this study, the performance of a new design concept utilizing a magnetorheological (MR) fluid composite material is examined through encapsulating a MR fluid into an elastomer. A prototype of MR fluid-elastomer vibration isolator is built and its dynamic behavior is studied in oscillatory compressions for a wide range of frequencies under various input electric currents. The experimental results show that both the stiffness and the damping capability of the MR fluidelastomer vibration isolator is a function of the displacement amplitude and magnetic field strength, and only weakly dependent upon the frequency of excitation; unlike the squeeze film mode counterparts [1]. This demonstrates that the new vibration isolator, whose mechanical properties can be controlled by an applied magnetic field, has potential in applications where tuning vibration characteristics are desired.