801 分散粒子のクラスタ形成を考慮した MR 流体の透磁率の算定

概要

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Magnetorheological (MR) fluid can vary the rheological characteristics according to applied magnetic field strength. In the design of devices using MR fluid, magnetic analysis is generally carried out verify their performance. Though the permeability of MR fluid should be estimated beforehand in the analysis, it cannot be given uniquely because MR fluid is a particle-dispersed system and the particles form clusters under a magnetic field. In this study, the cluster formation of the particles was modeled and simulated by Cellular Automata, which is known as a class of discrete modeling techniques. On the base of the simulation results, magnetic analysis was carried out to obtain the equivalent permeability of MR fluid considering the cluster formation. It was shown that the permeability might be estimated from the iron content in MR fluid.
一般社団法人日本機械学会の論文
2002-09-13