# Can CalculiX model a permanent magnet?

**URL:** <https://calculix.discourse.group/t/can-calculix-model-a-permanent-magnet/328>\
**Category:** Uncategorized\
**Created:** [December 2, 2020, 5:02pm UTC](https://calculix.discourse.group/t/can-calculix-model-a-permanent-magnet/328 "2020-12-02T17:02:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![JohnM](https://avatars.discourse-cdn.com/v4/letter/j/848f3c/32.png) [@JohnM](https://calculix.discourse.group/u/JohnM)\
**Post date:** [December 2, 2020, 5:02pm UTC](https://calculix.discourse.group/t/can-calculix-model-a-permanent-magnet/328/1 "2020-12-02T17:02:49Z")

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Can CalculiX model a permanent magnet?

I have used the \*ELECTROMAGNETICS procedure to run an induction problem, with a conductor in air, similar to the inductionN.inp examples. But I am not as clear on how to model a bar magnet in air.

I am trying to use FEMM to model a bar magnet, then match this with Calculix.  
My hope is that I can then extend this past FEMM’s 2D limitations.

FEMM requires 2 properties of the magnet:

- The relative magnetic permeability (μr) of the magnet

- The coercivity (Hc) of the magnet

I do not see a capability to consider Hc in Calculix.

Any help would be greatly appreciated!  
If someone has a complete working example I would gladly accept, no shame here 🙂