This paper proposes a novel adaptive tunable vibration absorber (TVA) based on a smart material the magnetorheological gel (MRG) to achieve a wide range of tonal vibration suppression on the primary system to protect any connected sensitive device. The vibration suppression performance of the MRG TVA was analyzed by conducting a modal test of the primary system under different magnetic fields. The experiment verified that the proposed MRG TVA can be controlled to produce 379% of stiffness change or 115% of tuning frequency under just 200 mT magnetic field. The proposed MRG TVA was found to possess a wider tuning frequency range than the TVA based on other smart material such as magnetorheological elastomer.
This paper proposes a tunable vibration absorber (TVA) based on a smart material called magneto-rheological gel (MRGs) to suppress a wide range of vibration disturbance. The stiffness of MRG can be changed under external magnetic field, which is the desirable property to tune a vibration absorber. In this paper, the feasibility of applying the material on a TVA is studied by conducting several experiments. It is shown that the designed MRG TVA has a tuning range from 33Hz to 40Hz under 120mT of magnetic field.
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