Dynamic characteristics of magneto-rheological fluid damper

Katsuaki Sunakoda, Hiroshi Sodeyama, Norio Iwata, Hideo Fujitani, Satsuya Soda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

35 Citations (Scopus)

Abstract

Two kinds of Magneto-rheological fluid damper (MRF damper) have been designed and manufactured. One has a nominal capacity of 2 kN and the other 20 kN. A bypass flow system is adopted for both dampers and each has the same capacity of electromagnet attached to the bypass portion. The effective fluid orifice is the rectangular space and the magnetic field is applied from the outside. A test was performed by applying different magnetic fields to the orifice portion of the rectangular space. The damping force and the force-displacement loop were evaluated. The test results yielded the following: 1) Two type's of dampers functioned by using one unit of the electromagnet under an appropriate electrical current control. 2) The magnitude of the damping force depends on the input magnetic field, but it has an upper limit. 3) Without an applied magnetic field, the MRF damper exhibits viscous-like behavior, while with a magnetic field it shows friction-like behavior. A mechanical model of the damper is estimated by taking account of the force-displacement loop. It is clarified that MRF dampers provide a technology that enables effective semi-active control in real building structures.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages194-203
Number of pages10
Volume3989
Publication statusPublished - 2000
Externally publishedYes
EventSmart Structures and Materials 2000: Damping and Isolation - Newport Beach, CA, USA
Duration: 2000 Mar 62000 Mar 8

Other

OtherSmart Structures and Materials 2000: Damping and Isolation
CityNewport Beach, CA, USA
Period00/3/600/3/8

Fingerprint

dampers
dynamic characteristics
Magnetic fields
Fluids
fluids
Electromagnets
Orifices
magnetic fields
electromagnets
bypasses
orifices
Damping
damping
Electric current control
active control
Friction
friction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Sunakoda, K., Sodeyama, H., Iwata, N., Fujitani, H., & Soda, S. (2000). Dynamic characteristics of magneto-rheological fluid damper. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3989, pp. 194-203). Society of Photo-Optical Instrumentation Engineers.

Dynamic characteristics of magneto-rheological fluid damper. / Sunakoda, Katsuaki; Sodeyama, Hiroshi; Iwata, Norio; Fujitani, Hideo; Soda, Satsuya.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3989 Society of Photo-Optical Instrumentation Engineers, 2000. p. 194-203.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sunakoda, K, Sodeyama, H, Iwata, N, Fujitani, H & Soda, S 2000, Dynamic characteristics of magneto-rheological fluid damper. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3989, Society of Photo-Optical Instrumentation Engineers, pp. 194-203, Smart Structures and Materials 2000: Damping and Isolation, Newport Beach, CA, USA, 00/3/6.
Sunakoda K, Sodeyama H, Iwata N, Fujitani H, Soda S. Dynamic characteristics of magneto-rheological fluid damper. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3989. Society of Photo-Optical Instrumentation Engineers. 2000. p. 194-203
Sunakoda, Katsuaki ; Sodeyama, Hiroshi ; Iwata, Norio ; Fujitani, Hideo ; Soda, Satsuya. / Dynamic characteristics of magneto-rheological fluid damper. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3989 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 194-203
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