Is There a Way to Calculate Energy in Magnets Using FEMM Software?

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Discussion Overview

The discussion revolves around calculating energy in magnets using FEMM software, focusing on the potential energy interactions between magnets and ferromagnetic materials. Participants explore the functionality of FEMM in this context and seek assistance in understanding energy calculations related to magnetic interactions.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • Ludovic expresses difficulty in obtaining varying energy values from FEMM software when selecting a surface for "Magnetic field Energy" and questions if any special procedures are needed.
  • Some participants mention that when a magnet interacts with ferromagnetic metal, it realigns the magnetic domains, effectively forming a magnet, which may influence energy calculations.
  • There is a reference to the superposition of magnetic fields, suggesting that overlapping fields can either increase or decrease energy, depending on their interaction.
  • Another participant expresses unfamiliarity with FEMM software, indicating a gap in knowledge regarding its application for energy calculations.
  • Ludovic seeks further assistance from the community regarding the use of FEMM for energy calculations in magnets.

Areas of Agreement / Disagreement

The discussion remains unresolved, with no consensus on how to effectively use FEMM software for calculating energy in magnets. Multiple viewpoints and levels of understanding about the software and magnetic interactions are present.

Contextual Notes

Participants have not clarified specific assumptions or limitations regarding the use of FEMM software, nor have they detailed the mathematical steps involved in energy calculations. The discussion lacks a clear methodology for addressing the energy calculations in the context of magnets.

lba7
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Hello,

(I'm not fluently in english, sorry if it's not a pure english)

I use FEMM software for caculate energy. I have found an integral fonction "Magnetic field Energy" when I select a surface. But I have always the same energy, I don't know why. Is there necessary to make something special ?

In fact, I would like to calculate the energy when a magnet draw a solid metal, or when a magnet draw another magnet. It's a simple problem.

The potential energy move between a solo magnet or a magnet with metal, no ?


Somebody can help me ?

Thanks

Ludovic
 
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When a magnet pulls a ferromagnetic metal it actually realigns the magnetic domains in the metal so that they form a magnet. That said, there is a specific http://hyperphysics.phy-astr.gsu.edu/hbase/electric/engfie.html" . When two fields overlap they will superimpose to either make the field stronger (increasing the energy and requiring work) or weaker (reducing the energy and doing work).
 
Last edited by a moderator:
good, thanks, but how can I use FEMM software for have energy in the magnet ?
 
I have no idea. I don't even know what FEMM software is.
 
does anybody can help me ?
 

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