Low Frequency model options

The following table describes the options you use to define electromagnetic properties for isotropic materials supported by the electromagnetic solutions. These options are available on the Isotropic Material dialog box, Electromagnetic page, when you set Model to Low Frequency.

For detailed information about defining electromagnetic material properties, see your electromagnetic solver documentation.

Electrical Properties
Specifies linear conductivity or resistivity, or nonlinear conductivity or resistivity. Because you can enter values for conductivity and resistivity, you must ensure their accuracy.Additionally, you can specify linear or nonlinear permittivity.
Conductivity Linear
The Conductivity property is the inverse of resistivity and is typically measured in Siemens per meter (S/m).
Electrical Conductivity	Specifies a constant value, or when you click , lets you specify temperature-dependent values with a table or formula field.When you only specify either Electrical Conductivity or %IACS, you can calculate the other with Calculate Conductivity from %IACS or Calculate %IACS from Conductivity.For more information, see Additional magnitude options.
%IACS
Conductivity Nonlinear
Specifies temperature and electrical field strength-dependent values with a table or formula field.
Specify Electrical Conductivity Field	When you want only Specify Electrical Conductivity Field or Specify %IACS Field, you can calculate the other field with Calculate Conductivity from %IACS or Calculate %IACS from Conductivity.
Specify %IACS Field
Resistivity Linear
The Resistivity property is typically measured in Ohms and a length unit.
Resistivity	Lets you enter a constant value for electrical resistivity, or when you click , lets you specify temperature-dependent values with a table or formula field.
Resistivity Nonlinear
Specify Electrical Resistivity field	Specifies temperature and electrical field strength-dependent values with a table or formula field.
Linear Permittivity
Relative Permittivity	Lets you enter a constant value or when you click , lets you specify temperature-dependent values with a table or formula field.For more information, see Additional magnitude options.
Nonlinear Permittivity
Specify Nonlinear Permittivity Field	Specifies temperature and electrical field strength-dependent values with a table or formula field.
Magnetic Properties
Soft Magnet Linear Permeability
Specifies magnetic properties including relative permeability for soft magnets, also called temporary magnets, where the magnetization virtually disappears after the external field is removed.Linear Permeability specifies constant or temperature-dependent relative permeability with a table or formula field.
Relative Permeability	Lets you enter a constant value. or when you click , lets you specify temperature-dependent values with a table or formula field.
Lamination Thickness	Lets you enter a constant value.
Soft Magnet Complex Permeability
Specifies the constant or temperature-dependent complex permeability with real and imaginary parts, constant complex permeability with magnitude and phase angle, or the temperature-dependent complex field values.
Relative Permeability	Specifies how the permeability is defined.
Real	Available when Relative Permeability is set to Real/Imaginary.Sets the real component of the magnitude of the permeability.
Imaginary	Available when Relative Permeability is set to Real/Imaginary.Sets the imaginary component of the magnitude of the permeability.
Magnitude	Available when Relative Permeability is set to Magnitude/Phase.Sets the magnitude of the permeability.
Phase	Available when Relative Permeability is set to Magnitude/Phase.Sets the phase angle of the permeability.
Specify Field	Available when Relative Permeability is set to Field.Specifies the temperature-dependent complex field values.
Lamination Thickness	Lets you enter a constant value.
Soft Magnet Nonlinear Permeability
Specifies permeability with temperature and BH curve data pairs. The BH curve shows the relationship between magnetic field strength and flux density.Additionally, you can specify Steinmetz Coefficients with temperature, frequency, and iron loss data pairs.Note: To add another row to the tables or delete a row from the tables, right-click in one of the cells of an existing row and choose either Add a Row or Delete a Row.
Temperature	Specifies a scalar value.
BH Curve	Specifies the BH curve with a table or formula field.
Lamination Thickness	Lets you enter a constant value.
Steinmetz Coefficients	Specifies Steinmetz coefficients directly or calculates the coefficients from iron loss.Direct EntryLets you specify temperature-dependent values with a table or formula field.Calculate from Iron LossLets you calculate Steinmetz coefficients from iron loss.
Temperature	Available when Calculate from Iron Loss is selected.
Frequency	Available when Calculate from Iron Loss is selected.
Iron Loss	Available when Calculate from Iron Loss is selected.Lets you enter a constant value or when you click , lets you specify magnetic flux density-dependent values for power to mass ratio with a table or formula field.
Calculate Steinmetz Coefficients	Available when you:Connect Calculate Steinmetz Coefficients to an NX Open routine.Calculate from Iron Loss is selected.Populates calculated values to the Steinmetz coefficients field.
Specify Steinmetz Coefficients Field	Specifies temperature-dependent Steinmetz Coefficients with a table or formula field. The dependent variables Kh, Alpha, Beta, and Ke are unitless.
Jiles-Atherton Parameter	Specifies temperature-dependent values for the Jiles-Atherton hysteresis model.Direct EntryLets you specify temperature-dependent values with a table or formula field.Calculate using Initial BH Curve and Iron LossLets you calculate the Jiles-Atherton parameters from the BH curve and iron loss data.Calculate from BH Loop DataLets you calculate the Jiles-Atherton parameters from the Temperature and Increasing or Decreasing Branch data.
Specify Jiles-Atherton Parameters field	Specifies temperature-dependent Jiles-Atherton parameters with a table or formula field.
Specify Coercivity	Available when Jiles-Atherton Parameter is set to Calculate using Initial BH Curve and Iron Loss.
Coercivity	Available when Jiles-Atherton Parameter is set to Calculate using Initial BH Curve and Iron Loss.
Specify Remanence	Available when Jiles-Atherton Parameter is set to Calculate using Initial BH Curve and Iron Loss.
Remanence	Available when Jiles-Atherton Parameter is set to Calculate using Initial BH Curve and Iron Loss.
Temperature	Available when Jiles-Atherton Parameter is set to Calculate from BH Loop Data.
Increasing or Decreasing Branch	Available when Jiles-Atherton Parameter is set to Calculate from BH Loop Data.
Calculate Jiles-Atherton Parameters	Available when you:Connect Calculate Jiles-Atherton Parameters to an NX Open routine.Set Jiles-Atherton Parameter to Calculate using Initial BH Curve and Iron Loss or Calculate from BH Loop Data.Populates calculated values to the Jiles-Atherton parameters field.
Permanent Magnet Linear Permeability Constant
Lets you specify magnetic properties including relative permeability, demagnetization, and so on for permanent magnets where the magnetization remains in the material after the external field is removed.
Relative Permeability	Lets you control whether you can also specify demagnetization values in the Specify Relative Permeability Field.
Remanence (Br)	Lets you control whether you can also specify demagnetization values in the Specify Relative Permeability Field.
Demagnetization	Lets you control whether you can also specify demagnetization values in the Specify Relative Permeability Field.
Permanent Magnet Linear Permeability Temperature Dependent
Lets you specify temperature-dependent values with a table of formula field.
Specify Demagnetization	Lets you control whether you can also specify demagnetization values in the Specify Relative Permeability Field.
Specify Relative Permeability Field	Lets you specify temperature-dependent Relative Permeability and Remanence (Br) values with a table or formula field.
Permanent Magnet Nonlinear Permeability
Specifies permeability with temperature and BH curve data pairs. The BH curve shows the relationship between magnetic field strength and flux density.Note: To add another row to the table or delete a row from the table, right-click in one of the cells of an existing row and choose either Add a Row or Delete a Row.
Temperature	Specifies a scalar value.
BH Curve	Specifies the BH curve with a table or formula field.

Look up more details

Common Electrical model options

High Frequency model options

Dynamic viscosity for electromagnetics

Low Frequency model options, Simcenter 3D 2021.1 Series

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