Home / Examples / Electric Analysis [Coulomb] / Example 16: Anisotropic Conductor

Example 16: Anisotropic Conductor

General

• An anisotropic conductor is placed in an isotropic conductor.
   

• By applying an electric potential difference, the electric field is generated.
  The distributions of the electric field and the current density are solved.
   

• Unless specified in the list below, the default conditions will be applied.
   

• Obtain this session's project file. (Right-click and choose 'Save link as')




• Results will vary depending on Femtet version and the PC environment.

 

Analysis Space

Item	Settings
Analysis Space	3D
Model Unit	mm

 

Analysis Conditions

Select [Static Analysis] as the electric potential is static.

Select a conductive material for analysis.

Item	Settings
Solver	Electric Analysis [Coulomb]
Analysis Type	Static Analysis (Capacitance)
Options	N/A

Model

The anisotropic conductor has the highest conductivity in the x direction originally.
The highest-conductivity direction is changed when the anisotropic conductor is rotated during the modeling.

Body Attributes and Materials

Body Number/Type	Body Attribute Name	Material Name
0/Solid	Metal	008_Cu *
1/Solid	Anisotropic_Metal	Anisotropic_Cond

* Available from the material DB

 

The conductivity of the anisotropic conductor is set as follows.

Material Name	Electric Conductivity
Anisotropic_Cond	Anisotropy: Select [Anisotropic].   Set [Conductivity Matrix]* 5.977 - - 0.0 0.0001 - 0.0 0.0 0.0001    X 107    [S/m] * This is not the actual material's property.

Boundary conditions

Boundary Condition Name/Topology	Tab	Boundary Condition Type	Settings
V0/Face	Electric	Electric Wall	Electric Potential Specified 0 [V]
V1/Face	Electric	Electric Wall	Electric Potential Specified 1 [V]

Results

The current density vectors are shown below.

 

The electric field vectors are shown below.

The directions of the current density and the electric field are different in the anisotropic conductor.

 

• This example shows by applying the electric field in the direction of (1,1,0), the effect of the anisotropic conductor can be calculated.
  Alternatively, by applying the electric field in the direction of (1,0,0) and setting the Euler angle of (0, 0, 45) to the body of anisotropic material
  (on the [Direction] tab of [Body Attribute]), the same results can be obtained.