New/EditNew MaterialConductivityElectric Conductivity: NonlinearProperties<Material Name>PropertiesConductivityElectric Conductivity: NonlinearPropertiesThis dialog offers the possibility to define the nonlinear electric conductivity as a dependency of electric field strength E on conduction current density J:
Spline interpolation is applied between the user-defined points. From this curve, the dependency of electric conductivity on electric field is computed:
Both
J and E
values of the curve must be positive, the curve must be monotonously increasing.
For electric field strength below the first user-defined point, the material
is assumed to be linear. For extremely high field strengths beyond the
user-defined interval the linear increase of electric conductivity 
as a function
of E is assumed.
The resulting nonlinear electric conductivity can be utilized by the tetrahedral-based stationary currents solver.
OK
Accepts the input and closes the dialog. Please note that at least three data points must be defined for correct interpolation.
Preview
Displays a preview of user-defined and fitted curves for the dependency of electric field on conduction current density.
Cancel
Closes this dialog box without performing any further action.
Help
Shows this help text.
Delete
Deletes the currently selected item from the list.
Delete All
Deletes all items in the list.
Import...
Imports the data from a text file.
Export...
Exports the data into a text file.
See also
Material Parameters: Conductivity (HF), Material Parameters: Conductivity (LF), Material Overview (LF), Stationary Currents Solver Overview.