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Proceedings Paper

Development of 400kN magnetorheological damper for a real base-isolated building
Author(s): Hideo Fujitani; Hiroshi Sodeyama; Takuya Tomura; Takeshi Hiwatashi; Yoichi Shiozaki; Katsuhiko Hata; Katsuaki Sunakoda; Shin Morishita; Satsuya Soda
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Paper Abstract

A 400kN magnetorheological damper (MR damper) for a real base-isolated building was developed and its dynamic characteristics were verified by experimental tests. The MR damper has 950mm (+/-475mm) stroke and by-pass flow potion. A new type of Magneorheological fluid is also developed in order to apply to the MR damper. MR fluid had a property of the settlement of particles in dampers. Authors developed a new MR fluid, which keeps the particles in the fluid adequately enough for usual use of MR damper. Analytical model was discussed in this paper. The force by the bingham visco-plastic model was compared with the results of experimental tests. It was found that this analytical model is useful to predict the capacity of the MR damper.

Paper Details

Date Published: 31 July 2003
PDF: 12 pages
Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); doi: 10.1117/12.483810
Show Author Affiliations
Hideo Fujitani, Building Research Institute (Japan)
Hiroshi Sodeyama, Sanwa Tekki Corp. (Japan)
Takuya Tomura, Bando Chemical Industries, Ltd. (Japan)
Takeshi Hiwatashi, Building Research Institute (Japan)
Yoichi Shiozaki, Building Research Institute (Japan)
Katsuhiko Hata, Bando Chemical Industries, Ltd. (Japan)
Katsuaki Sunakoda, Sanwa Tekki Corp. (Japan)
Shin Morishita, Yokohama National Univ. (Japan)
Satsuya Soda, Waseda Univ. (Japan)


Published in SPIE Proceedings Vol. 5052:
Smart Structures and Materials 2003: Damping and Isolation
Gregory S. Agnes; Kon-Well Wang, Editor(s)

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