As one of the semi-active vibration control devices for mechanical or civil structures, magneto-rheological fluid dampers have been enthusiastically studied and developed since the 1990s. A new magneto-rheological material for such dampers has been developed to provide a practical solution to the significant common drawback of sedimentation of ferromagnetic fine particles in the fluid. Industrial grease is used as the dispersion medium in this material. The thickener to be added in the grease to control the rheological properties seems to prevent separation of the particles from the dispersion medium. Several performance tests were carried out with a proto-type of the damper with the newly developed magneto-rheological grease, namely, the magneto-rheological grease damper. Based on the test results, the energy dissipation capabilities of the damper and the basic characteristics of the magneto-rheological grease were verified to provide semi-active vibration control. Moreover, the analytically-derived design formulae for the damper were improved on the basis of the test results.
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ASME 2015 Pressure Vessels and Piping Conference
July 19–23, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5703-8
PROCEEDINGS PAPER
An Experimental Study on Basic Characteristics of a Magneto-Rheological Grease Damper
Yusuke Sato,
Yusuke Sato
Sanwa Tekki Corporation, Utsunomiya, Japan
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Hiroshi Sodeyama,
Hiroshi Sodeyama
Sanwa Tekki Corporation, Utsunomiya, Japan
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Makoto Hayama,
Makoto Hayama
Kyodo Yushi Corporation, LTD, Fujisawa, Japan
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Shin Morishita
Shin Morishita
Yokohama National University, Yokohama, Japan
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Yusuke Sato
Sanwa Tekki Corporation, Utsunomiya, Japan
Hiroshi Sodeyama
Sanwa Tekki Corporation, Utsunomiya, Japan
Makoto Hayama
Kyodo Yushi Corporation, LTD, Fujisawa, Japan
Shin Morishita
Yokohama National University, Yokohama, Japan
Paper No:
PVP2015-45463, V008T08A007; 8 pages
Published Online:
November 19, 2015
Citation
Sato, Y, Sodeyama, H, Hayama, M, & Morishita, S. "An Experimental Study on Basic Characteristics of a Magneto-Rheological Grease Damper." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 8: Seismic Engineering. Boston, Massachusetts, USA. July 19–23, 2015. V008T08A007. ASME. https://doi.org/10.1115/PVP2015-45463
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