This Article Full Text (PDF) All Versions of this Article: 1045389X08091117v1 20/2/181    most recent References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Nam, Y.-J. Articles by Park, M.-K. Search for Related Content Social Bookmarking                         What's this?

Electromagnetic Design of a Magnetorheological Damper

Applied Fluid Power Systems Laboratory, Department of Mechanical Engineering Pusan National University, Busan 609-735, Korea

Myeong-Kwan Park

Applied Fluid Power Systems Laboratory, Department of Mechanical Engineering Pusan National University, Busan 609-735, Korea, mkpark1{at}pusan.ac.kr

This study presents an electromagnetic design methodology for the magnetorheological (MR) damper. To improve the performance of the MR damper, the magnetic field should be effectively supplied to the MR fluid. Therefore, it is important that the magnetic circuit composed with the MR fluid, the ferromagnetic yoke for forming the magnetic flux path, and the electromagnetic coil are well designed from the electromagnetic viewpoint. For this purpose, two effective approaches are proposed; one is to shorten the magnetic flux path by removing the unnecessary bulk of the yoke in order to improve the static characteristic of the MR damper, and the other is to increase the magnetic reluctance of the magnetic circuit by minimizing the cross-sectional area of the yoke through which the magnetic flux passes in order to improve the dynamic and hysteretic characteristics. After designing and manufacturing two MR dampers, the conventional type and the proposed type, their performances are evaluated and compared through the magnetic field analysis and a series of basic experiments. These results show that the proposed design methodology can be effectively used as a fundamental design material for expanding application fields of the MR damper.

Key Words: magnetorheological fluid • MR damper • electromagnetic design.

This version was published on January 1, 2009

Journal of Intelligent Material Systems and Structures, Vol. 20, No. 2, 181-191 (2009)
DOI: 10.1177/1045389X08091117


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?