A206 MRグリースの基本特性測定と減衰器への応用(OS6 制御用センサ・アクチュエータ)

概要

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Magneto-Rheological (MR) Grease was developed and its typical properties were investigated by using a rotational viscometer. Based on these properties, a variable damper applying MR grease was designed and its performance was also investigated. MR fluid is known as one of functional fluids, whose rheological properties can be controlled by the applied magnetic field strength. Its potential application is promising and several mass-produced applications such as variable suspension system or engine mount system for automobiles have already developed. MR fluid is composed of micron-sized magnetic particles and a carrier oil such as mineral oil or silicon oil. But the particles dispersed in the fluid would precipitate and make sedimentation due to the difference of density. In order to reduce or avoid the sedimentation of the magnetic particles in MR fluid, grease was introduced instead of base oil and MR grease was developed. In this paper, the typical properties of MR grease are shown, measured by a rotational viscometer. Furthermore, MR grease was adapted to a cylindrical damper, and its properties were investigated.
一般社団法人日本機械学会の論文
2011-06-28