Magnetic powder forming simulation subjected to pressing in magnetic field
Magnetic powder forming simulation subjected to pressing in magnetic field
复制标题
磁场压制下磁粉成形模拟
DOI：
10.1016/0924-0136(94)90365-4
复制
发表时间：
1994
影响因子：
6.3
通讯作者：
J. Kihara
中科院分区：
文献类型：
--
作者：
S. Tamura;T. Aizawa;J. Kihara
磁场成形是一种很有前途的制备高质量铁磁材料的方法。在该工艺中，通过金属注射成型工艺在高磁通量下形成磁性粉末。但该工艺参数复杂，难以获得最佳成形条件。该解析方法是进行此类成形优化设计和研究磁粉在外加磁场和压力作用下流动机理的有效工具。发展了压载与磁场耦合的方法来模拟磁场成形。该方法采用颗粒模型来模拟粉末颗粒的力学行为，并将磁场视为体力。在数值算例中，我们分析了不同压制工艺下磁粉流动的差异，并在颗粒模型中考虑了磁粉的磁化择优取向。
Magnetic field forming is a promising method to produce high quality ferromagnetic materials. In this process, magnetic powder is formed in the high magnetic flux by the metal injection molding process. However the parameter of this process is very complicated and it is still difficult to obtain the optimum forming conditions. The analytical method is very effective tool to make such optimum forming design and to investigate the mechanism of the magnetic powder flow under applied magnetic field and pressing. We developed the coupling method of pressing load with magnetic field to simulate the magnetic field forming. In this method, granular modeling is utilized to simulate the mechanical behavior of the powder particles and the magnetic field is considered as a body force. In the numerical example, we analyzed the difference of the magnetic powder flow for pressing schedule and the preferred orientation of magnetizing of the magnetic powder is taken into account in the particle modeling.