Thin Surfaces |  |
Thin surfaces are isotropic materials with a user-defined thickness that is less than or equal to the finite difference cell dimension in the cross-sectional direction. Thin surfaces are not finite difference materials in the normal sense, but the implementation of a mathematical algorithm designed to simulate the presence of a thin, isotropic, frequency independent material of considerable conductivity (e.g., the 10,000 S/m value associated with carbon fiber composites).
In the case of coincident or overlapping materials, materials are assigned the following priority:
InstructionsClick
Structures within the Definitions section under the EMA3D tab in the ribbon. Then select
Thin Surface.
In the properties panel, select Materials. Select the drop-down arrow that appears to its right. A new window will appear. Select the
New button. A new Thin Surface will appear. Double click it to assign it.
In the Properties Panel, adjust the thin surface properties as desired.
Use the select surface
tool to select the surface(s) to which to assign the Thin Surface definition.
Click OK
to complete the Thin Surface definition.
Adjust the definitions of the Thin Surface at any time by right clicking it within the Simulation Tree and selecting Edit from the pop-up menu.
GeneralEntry | Meaning |
|---|---|
Material | Local thin surface definition to assign to the geometry. |
Name | Name of the material. |
GeneralEntry | Meaning |
|---|---|
Color | Color to use when rendering the material. |
Permittivity (ε) | Material absolute permittivity [F/m]. |
Relative Permittivity (εᵣ) | Material relative permittivity. |
Permeability (μ) | Material absolute permeability [H/m]. |
Relative Permeability (μᵣ) | Material relative permeability. |
Electric Conductivity (σₑ) | Material electric conductivity [S/m]. |
Magnetic Conductivity (σₘ) | Material magnetic conductivity. |
Thickness | Material surface thickness [mm; must be smaller than spatial step in normal direction]. |
MetadataEntry | Meaning |
|---|---|
Part Number | Part number of material (if any). |
Company | Company of material (if any). |
Category | Category of material (if any). |
Abbreviation | Abbreviation of material (if any). |
Description | Description of material (if any). |
Short Name | Short name description of material (if any). |
Long Name | Long name description of material (if any). |
Version | Version of material (if any). |
See AlsoOther Resources
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