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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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nonlinear B-H curve

Posted 2014年9月20日 GMT-4 15:15 Low-Frequency Electromagnetics Version 4.4 2 Replies

David Segal
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Hi

I am looking for an example of a very simple model:

I have a permanent magnet near a pirce of iron (non linear B-H) and need

to calculate the force on the iron.

None of the model examples cover this particular case.

thanks

DAvid
2 Replies Last Post 2014年9月30日 GMT-4 09:42
Vivekram Sivasailam
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Posted: 1 decade ago 2014年9月21日 GMT-4 05:42
Hi,

You can calculate the force using the in-built force functions or maxwell stress tensors inside COMSOL. Alternatively there is a speaker module inside the model libraries for acoustics speakers. You could check that too.

Viv
Hi, You can calculate the force using the in-built force functions or maxwell stress tensors inside COMSOL. Alternatively there is a speaker module inside the model libraries for acoustics speakers. You could check that too. Viv
Nirmal Paudel COMSOL Employee

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Posted: 1 decade ago 2014年9月30日 GMT-4 09:42
Dear David,

You can use the non-linear Magnetic Materials (B-H Curve) instead of a linear Iron as done in the attached model file. The attached model file is the modification of the Permanent Magnet model from the model library:
www.comsol.com/model/the-magnetic-field-from-a-permanent-magnet-78

Best Regards,
Nirmal Paudel
-----------------------
COMSOL Employee
USA
Dear David, You can use the non-linear Magnetic Materials (B-H Curve) instead of a linear Iron as done in the attached model file. The attached model file is the modification of the Permanent Magnet model from the model library: http://www.comsol.com/model/the-magnetic-field-from-a-permanent-magnet-78 Best Regards, Nirmal Paudel ----------------------- COMSOL Employee USA

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