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µ-Metal shield

Posted 12 sept. 2011, 14:58 UTC−4 Version 4.1 5 Replies

Vladimir Gregorowitsch
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Hi all,

i have an Inventor file with a µ-Metal shield i have designed. Now i want to simulate how good the shielding is. Is it enough ne apply a magnetic field (as a boundary condition) and to set the the magnetic permeability of the metall?

Thank you
5 Replies Last Post 15 sept. 2011, 10:44 UTC−4
Edgar Kaiser
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Posted: 1 decade ago 13 sept. 2011, 03:44 UTC−4
Vladimir,

if the fields get the material near saturation you might need to define a non-linear permeability.

Cheers
Edgar
Vladimir, if the fields get the material near saturation you might need to define a non-linear permeability. Cheers Edgar
Vladimir Gregorowitsch
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Posted: 1 decade ago 13 sept. 2011, 05:47 UTC−4
Thanks,

i will try it.

Vladimir
Thanks, i will try it. Vladimir
Vladimir Gregorowitsch
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Posted: 1 decade ago 14 sept. 2011, 11:33 UTC−4
Hi, i have some Problems,

first i designed i mini setup. A big cube and a small metall part with high permiability inside. Now i want to see how the magnetic field in cube change if i apply a constant magnetic field.

But this is my Problem. how to define a constant magnetic field in the big cube, that i will be influenced by the high permiability? I i set the magnitic field in the whole volume then nothing will happen?

With best regards

Hi, i have some Problems, first i designed i mini setup. A big cube and a small metall part with high permiability inside. Now i want to see how the magnetic field in cube change if i apply a constant magnetic field. But this is my Problem. how to define a constant magnetic field in the big cube, that i will be influenced by the high permiability? I i set the magnitic field in the whole volume then nothing will happen? With best regards
Edgar Kaiser
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Posted: 1 decade ago 14 sept. 2011, 11:52 UTC−4
Vladimir,

set the uniform field you want just on the outer boundaries (cube walls) this will result in a uniform field inside the cube and any magnetic object inside the cube will distort it. E.g. for a uniform field of 1T in z-direction set Bz=1T and Bx=0, By =0 on all outer boundaries.

Cheers
Edgar
Vladimir, set the uniform field you want just on the outer boundaries (cube walls) this will result in a uniform field inside the cube and any magnetic object inside the cube will distort it. E.g. for a uniform field of 1T in z-direction set Bz=1T and Bx=0, By =0 on all outer boundaries. Cheers Edgar
Vladimir Gregorowitsch
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Posted: 1 decade ago 15 sept. 2011, 10:44 UTC−4
Great Thanks!

I got it :)
Great Thanks! I got it :)

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