Study on the development of a passive type MR damper with displacement-dependent damping characteristics

Takahiro Murakami, Michiya Sakai, Masami Nakano

Research output: Contribution to journalArticlepeer-review


This paper proposes a new concept of Magneto-Rheological (MR) fluid damper, which is a passive type MR fluid damper. The passive type MR damper has no electrical devices such as sensor, power supply and controller, and hence, it has an advantage in reliability and cost compared with semi-active MR dampers. Moreover, the proposed MR damper can be designed as a variable damping force device in respond to its displacement. In this paper, dynamic performance of a passive type MR damper is experimentally demonstrated. The prototype of the proposed damper has been manufactured in order to verify the dynamic performance. The displacement excitation test result of the damper demonstrates that the damping characteristics depend on its displacement amplitude, that is, the damper behaves as a linear viscous damper under smaller vibrations and develops much higher damping performance under large vibrations.

Original languageEnglish
Pages (from-to)985-992
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number753
Publication statusPublished - 2009 May
Externally publishedYes


  • Damper
  • Damping characteristics
  • Displacement exitation test
  • Functional fluids
  • Magneto-rheological fluid
  • Non-newtonian fluid
  • Passive type mr damper

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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