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MR Damper That Utilizes Multi Pole Electromagnets

[+] Author Affiliations
Taichi Matsuoka, Tomohiro Sugita

Meiji University, Kawasaki, Kanagawa, Japan

Katsuaki Sunakoda

Sanwa Tekki Co., Tokyo, Japan

Paper No. PVP2014-28989, pp. V008T08A010; 4 pages
  • ASME 2014 Pressure Vessels and Piping Conference
  • Volume 8: Seismic Engineering
  • Anaheim, California, USA, July 20–24, 2014
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4607-0
  • Copyright © 2014 by ASME


The authors propose a Magneto-Rheological (MR) fluid damper that utilizes multi pole electromagnets in order to control variable damping effect such as a semiactive damper. The damper consists of a piston, a cylinder, a by-pass pipe, 8 electromagnets, and MR fluid. The electromagnets are installed octagonal around the pipe. When each electromagnet can control both of the magnetic flux density and direction, resisting force can be switched by several types of magnetic field such as artificial orifice. The test damper is manufactured. Resisting force characteristics are measured by using a shaking actuator. Finally, dynamic performance of the damper is confirmed experimentally.

Copyright © 2014 by ASME



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