Adaptive Vibration Control with Magneto-Rheological Gel Damper

本文描述了一种新型磁流变（MR）流体的开发，其典型特性可以由外加磁场强度控制。该磁流变液以润滑脂为基材，分散的磁性颗粒可由润滑脂中的三维细丝支撑，具有较好的颗粒分散稳定性。用该磁流变润滑脂构建了可变阻尼器，并对其性能进行了研究。此外，将可变阻尼器安装在小尺寸结构模型中，通过改变可变阻尼器的阻尼特性可以改变结构的振动模式。

This report describes the development of a new type of Magneto-Rheological(MR) fluid whose typical characteristics can be controlled by the applied magnetic field strength. This MR fluid was based on grease and the dispersed magnetic particles might be supported by three-dimensional filament in the grease, and it showed quite good dispersion stability of particles. A variable damper was constructed with this MR grease and its performance was investigated. Furthermore, the variable damper was installed into a small-size structural model and the vibration mode can be varied by changing the damping property of the variable damper.