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Diametrically magnetized Arc Magnet

Posted Dec 5, 2016, 8:40 a.m. EST Version 5.0, Version 5.1, Version 5.2, Version 5.2a 2 Replies

Haris Sheh Zad
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Hi
I am trying to simulate the diametrically magnetized arc neodymium magnet in COMSOL 3D. But I don't know how to define the Remanent magnetization of diametrically magnetized arc magnet in x, y ,z coordinates. Can anybody guide me regarding this ?
Thanks
2 Replies Last Post Dec 5, 2016, 11:27 a.m. EST
Mark Harradine
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Posted: 7 years ago Dec 5, 2016, 11:24 a.m. EST
If it is magnetized across the diameter, then it will simply be a uni-directional vector. I suspect your magnet is magnetised radially, in which case the attached images will help.

If it is magnetized across the diameter, then it will simply be a uni-directional vector. I suspect your magnet is magnetised radially, in which case the attached images will help.
Mark Harradine
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Posted: 7 years ago Dec 5, 2016, 11:27 a.m. EST
Note that these definitions assume you have attached a BH curve to your material, if you want to assume a linear demagnetisation curve, you can replace the expressions with:

Br*cos(atan2(y,x))

and

Br*sin(atan2(y,x))

and

0
Note that these definitions assume you have attached a BH curve to your material, if you want to assume a linear demagnetisation curve, you can replace the expressions with: Br*cos(atan2(y,x)) and Br*sin(atan2(y,x)) and 0

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