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Permanent magnet constitutive relation

Posted Sep 9, 2010, 1:43 a.m. EDT Low-Frequency Electromagnetics 1 Reply

Millicent Chan
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Hey guys!

I'm trying to model a system of permanent magnets and was just wondering what the constitutive relation should be used: the magnetisation one B = \mu_0H + \mu_0M, or the remanent flux one B = µ_0µ_rH + ???B_r ?
From what I've seen, both seem to be used in the literature...

Thanks for the help :)
- Milly
1 Reply Last Post Sep 10, 2010, 4:43 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Sep 10, 2010, 4:43 a.m. EDT
Hi

both are equivalent if you apply the physics correctly and you input the correct values, I mostly use the Magnetisation fr permanent magnets, as it's often what I have as "correct" specified values

--
Good luck
Ivar
Hi both are equivalent if you apply the physics correctly and you input the correct values, I mostly use the Magnetisation fr permanent magnets, as it's often what I have as "correct" specified values -- Good luck Ivar

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