Affiliations: [a] Department of Mechanical Engineering, Pusan National
University, Busan, Korea
Correspondence:
[*]
Corresponding author: Myeong-Kwan Park, Department of Mechanical
Engineering, Pusan National University, Busan, Korea. Tel.: +82 51 510 2464;
Fax: +82 51 514 0685; E-mail: mkpark1@pusan.ac.kr
Abstract: This paper is concerned with an electromagnetic design methodology
for a magneto-rheological (MR) valve. In order to improve the performance of
the MR valve, the magnetic circuit consisting of the MR fluid, the yoke for
forming the magnetic flux path, and the electromagnetic coil should be
effectively designed. For this purpose, two effective approaches are proposed:
one is to shorten the magnetic flux path by removing the unnecessary bulk of
the yoke to improve the static characteristic of the MR valve, 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 to
improve the dynamic and hysteretic characteristics. After two MR valves, one is
a conventional type valve and the other is the proposed one, are designed and
fabricated, their performances are evaluated through magnetic field analysis
and a series of basic experiments.
