# Ansys maxwell 3d material library

## Main Question or Discussion Point

hi everybody. i just wonder. can we add new material library in ansys maxwell 3d(v.16) manually. especially magnets?

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Yes, of course, go to Tools -> Edit Configured Libraries -> Materials -> Add Material and then from the dropdown menu (Calculate Properties) choose Permanent Magnet.

but i dont know properties of N50 magnet. İ just found Br value. i need Mu and Hc values too. where can i find ?

http://www.rare-earth-magnets.com/Permanent-Magnet-Selection-and-Design-Handbook.pdf [Broken]

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i just tried to add material N50 but i cant. could you tell me what i must do step by step if you know?

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OK

Mu is relative permeability. Mo*Mu is Slope of BH curve. If you guessed the curve of PM in the second quadrant linear, equation is

Mu*Mo=Br/Hc
Mo=4*pi*10^(-7)

For N50 is
Br=1.425
Hc=971 000

And Mu is: 1.167846519

If you want to enter the non-linear characteristic, then you must enter the point by point. In Maxwell Help, you have instructions for how to do it.

thank you so much :)

i just tried. add new material -> calculate for permanent magnet

new windows comes up and i entered Mu and Hc values in their spaces and Br values calculated automaticly 1,425 .
i click ok button. so new material is added. but i got a warning message. the message is:

" Material 'n50_deneme': The magnitude of Magnetic Coercivity is expected to be <= 0. If you use a positive value the direction used will be the opposite of the unit vector specified. (12:54:09 Eki 30, 2013) "

still i do my analysis. and the force i calculated is bigger than NdFe35. it seems it work :)

but i wonder about the warning. is it important ?

For Magnetic Coercivity you must put negative value: Hc=-971 000 A/m

ok. i will try negative value. thank you for your help

i change Hc value to negative and now it seems ok. thank you so much. may i ask what are you doing with maxwell?

Of course

I am doing design of electric machines

i am so new at maxwell . only two moths. so my question is really simple :) i wanna do a linear motor simulation. and i am studying on

SEW-EURODRİVE

typ: SL2-P050S-010

motor. but my desing is not even close with it :S
do you have some advice for me?