An analytical model for magnetorheological fluids
An analytical model for magnetorheological fluids
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DOI：
10.1088/0022-3727/33/23/304
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发表时间：
2000-12
期刊：
影响因子：
--
通讯作者：
X. Tang;H. Conrad
中科院分区：
文献类型：
--
作者：
X. Tang;H. Conrad
建立了磁流变液屈服应力随磁场和颗粒体积分数变化的二维和三维解析模型，与实验数据吻合较好。颗粒在团聚体中的堆积密度、磁化饱和度和颗粒间的增强场是影响团聚体性能的重要因素。我们的计算表明，由于整个磁流变悬架的各向异性磁化性，扭转力分量可能占总剪切力的20%。此外，当颗粒完全饱和时，屈服应力与饱和磁化强度的平方成正比。
Two- and three-dimensional analytical models for the yield stress of magnetorheological (MR) fluids as a function of magnetic field and total volume fraction of particles are developed, which are in accord with experimental data. Important factors are the packing density of the particles in the aggregates, their magnetization saturation and the enhanced field between the particles. Our calculations indicate that the torsional force components due to the anisotropic magnetizability of the entire MR suspension may contribute up to 20% of the resultant shear force. Further, when the particles are completely saturated the yield stress is proportional to the square of the saturation magnetization.