| Autor: |
Alessandro Giuseppe D’Aloia, Antonio Di Francesco, Valerio De Santis |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Magnetochemistry, Vol 7, Iss 1, p 10 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2312-7481 |
| DOI: |
10.3390/magnetochemistry7010010 |
| Popis: |
In this study, a novel computational method capable of reproducing hysteresis loops of hard magnetic materials is proposed. It is conceptually based on the classical Preisach model but has a completely different approach in the modeling of the hysteron effect. Indeed, the change in magnetization caused by a single hysteron is compared here to the change in velocity of two disk-shaped solids elastically colliding with each other rather than the effect of ideal geometrical entities giving rise to so-called Barkhausen jumps. This allowed us to obtain a simple differential formulation for the global magnetization equation with a significant improvement in terms of computational performance. A sensitivity analysis on the parameters of the proposed method has indeed shown the capability to model a large class of hysteresis loops. Moreover, the proposed method permits modeling of the temperature effect on magnetization of neodymium magnets, which is a key point for the design of electrical machines. Therefore, application of the proposed method to the hysteresis loop of a real NdFeB magnet has been proven to be very accurate and efficient for a large temperature range. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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