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Electromagnetic Modeling of Ferrites Using Shell Elements and Random Grain Structures
- Source :
- IEEE transactions on magnetics, 56 (2
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- We present a novel approach for stochastic finite-element (FE) modeling of the electromagnetic field in ferrites, combining a thin shell model (TSM) for highly permittive grain boundaries with a Voronoi-tessellation-based geometry generation algorithm. The TSM is validated in the case of a periodic grain structure in a linear 2-D time-harmonic case over a frequency range of 10 kHz-1 GHz, and problems related to standard FE discretization are discussed. The TSM is then applied in a stochastic study for simulating the effect of varying grain structure on the effective resistivity, losses, and reactive power densities of a ferrite core.<br />SCOPUS: ar.j<br />info:eu-repo/semantics/published
- Subjects :
- Materials science
Electricité
Condensed matter physics
Eddy currents
random media
213 Electronic, automation and communications engineering, electronics
Shell (structure)
Sciences de l'ingénieur
finite-element (FE) analysis
Electronic, Optical and Magnetic Materials
Enseignement des sciences de l'ingénieur
Computational electromagnetics
Electrical and Electronic Engineering
ferrites
Subjects
Details
- ISSN :
- 19410069 and 00189464
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Magnetics
- Accession number :
- edsair.doi.dedup.....69632e93045d1d3905e8a6f4fdb5444d