Development of 400kN magnetorheological damper for a real base-isolated building

Hideo Fujitani; Hiroshi Sodeyama; Takuya Tomura; Takeshi Hiwatashi; Yoichi Shiozaki; Katsuhiko Hata; Katsuaki Sunakoda; Shin Morishita; Satsuya Soda

doi:10.1117/12.483810

31 July 2003 Development of 400kN magnetorheological damper for a real base-isolated building

Hideo Fujitani, Hiroshi Sodeyama, Takuya Tomura, Takeshi Hiwatashi, Yoichi Shiozaki, Katsuhiko Hata, Katsuaki Sunakoda, Shin Morishita, Satsuya Soda

Author Affiliations +

Proceedings Volume 5052, Smart Structures and Materials 2003: Damping and Isolation; (2003) https://doi.org/10.1117/12.483810
Event: Smart Structures and Materials, 2003, San Diego, California, United States

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.

Citation Download Citation

Hideo Fujitani, Hiroshi Sodeyama, Takuya Tomura, Takeshi Hiwatashi, Yoichi Shiozaki, Katsuhiko Hata, Katsuaki Sunakoda, Shin Morishita, and Satsuya Soda "Development of 400kN magnetorheological damper for a real base-isolated building", Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); https://doi.org/10.1117/12.483810

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