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Vibration Suppression of Flexible Beam Using Electromagnetic Shunt Damper

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2 Author(s)
Tai-Hong Cheng ; Sch. of Mech. Eng., Chonnam Nat. Univ., Gwangju ; Il-Kwon Oh

In this paper, the electromagnetic shunt damper was newly developed to passively suppress the vibration of the flexible cantilever beams. The electromagnetic shunt damper, which is electro-mechanically coupled with the flexible structures, simply consists of a coil, a permanent magnet, and an R-C circuit. The ends of the conductive coil are connected to the R-C series shunt circuit. The vibration and damping characteristics of the flexible beams with the electromagnetic shunt damper were investigated by tuning the circuit parameters. Also, the effect of the magnetic intensity on the shunt damping was studied with the variation of the gap between the aluminum beam and the permanent magnet. The theoretical model of electromagnetic shunt damper was validated with experimental results. Present results show that the magnet shunt damper can be successfully applied to reduce the vibration of the flexible structures.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 6 )