Behaviour of magnetic particles in compaction

被引：10

作者：

Kotera, H

Kitahara, H

Onoyama, A

Shima, S

机构：

[1] Kyoto University, Department of Mechanical Engineering, Kyoto, 606-01, Yoshida Honmachi Sakyo-ku

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 02期

关键词：

D O I：

10.1109/20.582577

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A purpose of this study is to perform a compaction process of ferromagnetic powder for optimizing magnetic characteristics in producing magnetic recording medium or a permanent magnet. The magnetic powder is treated as an assembly of particles. A circular disk and an elliptical disk are employed as particle models. To simulate the behavior of the particles, a particle dynamics simulation is proposed, where Coulomb's law for magnetized particles, torque by an applied magnetic field, elastic repulsive force due to Hertzian contact and friction force are considered. A relationship between the direction of the applied magnetic field and motion of the punch is examined. It is commonly considered that easy directions of magnetiztion are oriented constantly in the direction of an applied magnetic field. However, the simulated results show that the particles are not aligned so because of the interaction forces between the magnetized particles.

引用

页码：1616 / 1619

页数：4

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