NDLI: Vibration control of a structure using Magneto-Rheological grease damper

Content Provider	Springer Nature Link
Author	Sugiyama, Shinya Sakurai, Tomoki Morishita, Shin
Copyright Year	2013
Abstract	This paper describes an application study of Magneto-Rheological (MR) grease damper to a structure with three stories. MR fluid is known as one of successful smart materials whose rheological properties can be varied by magnetic field strength, and has been applied to various kinds of device such as dampers, clutches, engine mounts, etc. However, ferromagnetic particles dispersed in MR fluid settle out of the suspension after a certain interval due to the density difference between the particles and their career fluid. To overcome this defect, we have developed a new type of controllable working fluid using grease as the career of magnetic particles. Network of thickener in grease is expected to hold the magnetic particles and prevent them from settled down. No or little sedimentation was observed in MR grease whose characteristics could be controlled by the magnetic field strength. MR grease was introduced into a cylindrical damper and its performance was studied. As a result, it was confirmed that the damping force of MR grease damper could be controlled by the applied electric current to the coil in the cylinder of damper. Furthermore, vibration response of a three-story model structure equipped with MR grease damper was investigated experimentally, and it was shown that MR grease damper worked effectively as a semi-active damper.
Starting Page	261
Ending Page	267
Page Count	7
File Format	PDF
ISSN	20950233
Journal	Frontiers of Mechanical Engineering
Volume Number	8
Issue Number	3
e-ISSN	20950241
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-07-18
Publisher Institution	Chinese Universities
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	vibration control damper smart material Magneto-Rheological (MR) grease MR fluid Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanical Engineering

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