Modeling and characterization of a magneto-rheological fluid based damper and analysis of vibration isolation with the damper operating in passive mode

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  • Indian Institute of Technology, Kharagpur


A physical model of a type of commercially available magneto-rheological fluid based damper has been developed to study the input-output response characteristics. The impedance of the nonlinear device has been analyzed based on equivalent linearization method. The capability of isolating vibration with the help of such a damper has also been studied analytically. The damper is operated in passive mode while the excitation is kept harmonic. A novel method of obtaining the steady-state response of a damped oscillator is presented that uses a combination of harmonic balance method and the method of averaging. The isolating property of the damper has been measured by transmissibilities derived for equivalent linear system.


Original languageEnglish
Pages (from-to)96-118
Number of pages23
JournalJournal of Sound and Vibration
Early online date19 Jun 2015
Publication statusPublished - 29 Sep 2015