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3.10.8. Parameter Reference

The following table describes material parameters that all simulators have in common:

Parameter Name

Description

Label

A unique name that identifies the material. (IAttribute/Label)

Type

Sets the material category, which determines the visibility of other parameters and plays a role in overlap processing. (IMaterial/Type)

Color

Color of the material. (IAttribute/Color)

Visible

Visibility of the material. Impacts visibility of objects this material is associated with. (IAttribute/Visible)

The following table contains detailed descriptions of material parameters. It also describes the material parameters available to the simulators, indicating the isotropic and tensor material support for specific material properties, for each simulator. Only the most advanced material supported is shown; if the table shows that a simulator has full tensor support for a particular property, the simulator also supports scalars and diagonal tensors for that property. In addition, if the table shows that a simulator supports frequency-dependent materials, materials defined with constants are also supported. All tensors must be symmetric, and all material inputs must be purely real. Complex (lossy) materials are defined by including a loss tangent or conductivity, and not by describing a complex permittivity or permeability.

Parameter Name

Description

RF3p

OM3p/OM2p

ES3p

MS3p

MICHELLE

PT3p/PT2p

Relative Permittivity (Er)

Relative permittivity is a unitless quantity that may be either scalar or symmetric tensor. Relative permittivity must be purely real; describe any electric losses with the electric loss tangent or the electric bulk conductivity. (IMaterial/RelativePermittivity)

Full Tensor, frequency-dependent components

Full Tensor

Scalar

Diagonal Tensor

Relative Permeability (Ur)

Relative permeability is a unitless quantity that may be either scalar or symmetric tensor. Relative permeability must be purely real; describe any magnetic losses with the magnetic loss tangent or the magnetic bulk conductivity. (IMaterial/ReleativePermeability)

Full Tensor, frequency-dependent components

Full Tensor

Scalar

Electric Loss Tangent

Electric loss tangent is a unitless quantity that may be either scalar or symmetric tensor. (IMaterial/ElectricLossTangent)

Full Tensor, frequency-dependent components

Full Tensor

Magnetic Loss Tangent

Magnetic loss tangent is a unitless quantity that may be either scalar or symmetric tensor. (IMaterial/MagneticLossTangent)

Full Tensor, frequency-dependent components

Full Tensor

Electric Bulk Conductivity

Electric bulk conductivity is defined in units of Siemens per meter, and it may be either scalar or symmetric tensor. (IMaterial/ElectricBulkConductivity)

Tensor, frequency-dependent components

         

Magnetic Bulk Conductivity

Magnetic bulk conductivity is defined in units of Ohms per meter, and it may be either scalar or symmetric tensor. (IMaterial/MagneticBulkConductivity)

Full Tensor, frequency-dependent components

Full Tensor

Solve Inside Conductors

If this material is a conductor, select Yes to force Analyst to simulate inside the conductor instead of automatically treating the conductor surface with the appropriate boundary condition. Appropriate when the material thickness is small comapred to the skin depth. (IMaterial/SolveInsideConductors)

Boolean

Boolean

2D Equivalent Conductor Thickness

Conductor thickness is used to determine the corresponding loss. The value of the impedance is determined by the skin-depth (d) when it is large as compared to the conductor thickness (t) according to the expression (1+j)*sqrt(mu*pi*f/sigma), where sigma is the bulk conductivity. When t is small as compared to d, then the impedance is given by z=(1+j)/(sigma*t). For intermediate situations the value smoothly transitions between the two extremes. (IMaterial/EquivalentConductorThickness)

Scalar

Scalar

Surface Roughness (RMS)

Root-mean-square of the surface roughness. If this parameter is non-zero it increments the loss associated with the boundary condition according to a parametric model based upon measured data. This parameter value should be small as compared to the conductor thickness and the skin-depth. (IMaterial/Roughness)

Scalar

Scalar

Electric Resistivity

Resistivity of electric conductor. (IMaterial/ElectricBulkResistivity)

Scalar

Scalar

Magnetization Curve B

A comma-separated list describing a set of points on the demagnetization curve, or B-H curve. This parameter holds the list of B values; the next parameter holds the list of corresponding H values. (IMaterial/MagnetizationCurveB)

Comma-separated values

Magnetization Curve H

A comma-separated list describing a set of points on the demagnetization curve, or B-H curve. This parameter holds the list of H values; the previous parameter holds the list of corresponding B values. (IMaterial/MagnetizationCurveH)

Comma-separated values

Magnetization Direction

A vector that indicates the direction of magnetization, which points from the magnet's south pole to its north pole. The vector magnitude is ignored. (IMaterial/MagnetizationDirection)

Vector

Demagnetization Curve B

A comma-separated list describing a set of points on the demagnetization curve, or B-H curve. This parameter holds the list of B values; the next parameter holds the list of corresponding H values. (IMaterial/DemagnetizationCurveB)

Comma-separated values

Demagnetization Curve H

A comma-separated list describing a set of points on the demagnetization curve, or B-H curve. This parameter holds the list of H values; the previous parameter holds the list of corresponding B values. (IMaterial/DemagnetizationCurveH)

Comma-separated values

For information on simulator-specific usage of these parameters, see here.

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