Experimental Research on A Magnetic Fluid Damper

PDF(1617 KB)

Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (9) : 144-148.

论文

Experimental Research on A Magnetic Fluid Damper

Yang Wen-ming, Li De-cai, Feng Zhen-hua

Author information +

History +

Abstract

A magnetic fluid damper with new structure is proposed according to cases constructing damping devices with more compact structure and less energy consuming. Based on the unique properties of magnetic fluid, the damper consumes energy using the viscous damping of liquids, which is a new energy absorption device. The dependence of damping to a cantilever by the magnetic fluid damper on various parameters is studied on an experiment table. The results show that there is damping effect at all the oscillation frequency of the cantilever in the experiment, especially when the frequency is less than 1Hz. The damping effect is better when the magnetic fluid having saturation magnetization 27.01kA/m is used. It can be also found that the damping effect is enhanced when the radius of the magnet and the radius of the hole in the magnet are increased respectively. And there is an optimal gap between the magnet and the shell and at this time the cantilever attains its maximum decay rate by the magnetic fluid damper.