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Material definition problem in ANSYS Maxwell

  1. May 9, 2017 #1

    Emy

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    HI Guys,
    I am getting an error in Ansys Maxwell that says

    Maxwell2d solver, process solver2d: Internal Solver Error: 'In the Material: M270-35A_12 , the SLOPE of the End Two Points in this BH curve is 56519.1, which is more than 2 times of Mu0; This may lead to a non-physical solution. Please check the BH curve!
    Is there anyone that can offer an explanation/help with this Error?
    Thank you in advance,
    Emy
     
  2. jcsd
  3. May 14, 2017 #2
    Thanks for the thread! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post? The more details the better.
     
  4. May 27, 2017 #3
    It is hard to say what is the problem. In my opinion you entered wrong measuring units.

    B has to be Wb/m^2[Tesla] and H A/m. Check if they are not gauss and oersted.

    However, even for a ferromagnetic material the relative permeability of the end part of BH curve has to be close to 1-1.2

    If the SLOPE it is A/m/Wb/m^2 then miu [=Wb/m^2/A/m]=1/56519.1=1.7693E-5 H/m that means 14 times the vaccum permeability [miuo=1.25664E-06 H/m].

    See also:

    http://ansoft-maxwell.narod.ru/en/Maxwell_v16_L03_Static_Magnetic_Solvers.pdf
     
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