Local Resistivity Model for Soft Magnetic Composite Materials

被引：0
|
作者：
Vesa, Joonas [1 ]
Marjamaki, Antero [1 ]
Elkhadrawy, Reda [1 ]
Igarashi, Hajime [2 ]
Rasilo, Paavo [1 ]
机构：
[1] Tampere Univ, Elect Engn Unit, Tampere, Finland
[2] Hokkaido Univ, Grad Sch Informat Sci & Technol, Sapporo, Hokkaido, Japan
来源：
2024 IEEE 21ST BIENNIAL CONFERENCE ON ELECTROMAGNETIC FIELD COMPUTATION, CEFC 2024 | 2024年
基金：
芬兰科学院; 欧洲研究理事会;
关键词：
conductivity; displacement current; permeability; reluctivity; homogenization; multiscale; permittivity; resistivity; soft magnetic composite;
D O I：
10.1109/CEFC61729.2024.10585985
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A resistivity model is proposed for soft magnetic composite materials. The model is complex-valued, but it has a time domain extension as a Cauer network. The model is expressed as a closed-form analytical expression. The resistivity depends explicitly on the physical and geometric properties of the material, and no empirical fitting parameters are introduced. Together with a similar kind of local reluctivity model, we find that a macroscale finite element model of a toroid is consistent with measurements. The presented methods provide a numerically efficient way to model soft magnetic composites.
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页数：2
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