For a time-harmonic eddy current analysis, you must define the material's magnetic permeability. You can specify magnetic permeability that is isotropic, orthotropic, or fully anisotropic. See the following sections for more information:
“Magnetic permeability,” Section 26.5.3 of the Abaqus Analysis User's Manual
“Eddy current analysis,” Section 6.7.5 of the Abaqus Analysis User's Manual
To define magnetic permeability:
From the menu bar in the Edit Material dialog box, select Electrical/MagneticMagnetic Permeability.
(For information on displaying the Edit Material dialog box, see “Creating or editing a material,” Section 12.7.1.)
Click the arrow to the right of the Type field, and specify the directional dependence of the magnetic permeability.
Toggle on Use frequency-dependent data to define magnetic permeability that varies with frequency.
A column labeled Frequency appears in the Data table.
Toggle on Use temperature-dependent data to define magnetic permeability as a function of temperature.
A column labeled Temp appears in the Data table.
Click the arrows to the right of the Number of field variables field to increase or decrease the number of field variables on which magnetic permeability depends.
Enter the applicable data in the Data table:
Magnetic Permeability
Isotropic magnetic permeability. (Units of FA–2.)
mu11(E), mu22(E), and mu33(E)
Three values for orthotropic magnetic permeability, ,
, and
. (Units of FA–2.)
mu11(E), mu12(E), mu22(E), mu13(E), mu23(E), and mu33(E)
Six values for anisotropic magnetic permeability, ,
,
,
,
, and
. (Units of FA–2.)
Frequency
Frequency in cycles/time.
Temp
Temperature.
Field n
Predefined field variables.
Click OK to close the Edit Material dialog box. Alternatively, you can select another material behavior to define from the menus in the Edit Material dialog box (see “Browsing and modifying material behaviors,” Section 12.7.2, for more information).