3-D simulation of magnetic particles' behaviour during compaction in a magnetic field
3-D simulation of magnetic particles' behaviour during compaction in a magnetic field
复制标题
磁场中压实过程中磁性颗粒行为的 3D 模拟
DOI：
10.1016/s0032-5910(99)00239-9
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发表时间：
2000
影响因子：
5.2
通讯作者：
S. Shima
中科院分区：
文献类型：
--
作者：
Harunori Kitahara;H. Kotera;S. Shima
各向异性磁性颗粒各有其易于磁化的轴线，其排列对所制永磁体的磁性性能有很大影响。因此，研究粒子的行为，即它们在外加磁场压实过程中如何移动或旋转是非常重要的。我们开发并采用了一个非球面轴对称粒子模型。当施加磁场时，每个粒子都具有磁极化。这些颗粒在磁场中受到不同形式的压实。它们的平移和旋转不仅受到机械力的作用，而且受到磁力的作用。研究了不同长径比下易轴的旋转和排列。它们受施加磁场和压实方式的显著影响。并与已有实验数据进行了比较。
The alignment of anisotropic magnetic particles, each of which has its own easy axis for magnetization, has a great influence on the magnetic performance of the permanent magnet produced. It is, therefore, of great importance to study the behaviour of particles, how they move or rotate, during compaction in an applied magnetic field. We develop and employ a non-spherical axi-symmetric particle model. Magnetic polarization is given to each particle when a magnetic field is applied. The particles are subjected to various types of compaction in a magnetic field. They are translated and rotated by not only mechanical forces but also magnetic forces. The rotation and alignment of the easy axis are studied for various aspect ratios of the particle. They are significantly influenced by the application of the magnetic field and type of compaction. The results are discussed comparing with existing experimental data.