Example1 Parallel-Plate Air-Gap Capacitor

General

• The capacitor analyzed in this exercise consists of two parallel conductive plates which have the potential difference.
   

• The capacitance, the electric field, and the equipotential map are solved.
   

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

Analysis Space

Analysis Conditions

Select “Static analysis” as the potential is static.

The electric field exists outside the analysis region. Therefore the open boundary condition below is applied initially.

Model

Create 2 sheet bodies for electrodes. Then, specify the voltage on each as boundary condition.

Body Attributes and Materials

Two sheet bodies are not the physical entity. They are used just to imprint the voltage-specified boundary condition.

They are called “imprinting body”.

You don’t need to set the body attribute or the material property on them.

* Available from the Material DB

Boundary Conditions

To set Outer Boundary Condition, go to the [Model] tab
 

and click [Outer Boundary Condition] .

Results

To see the calculation results, go to the [Results] tab

 and click [Table] .

The vectors of the electric field are shown below.

The electric field is generated between two plates.

The gradation contour of the voltage on the XZ section is shown below.

The distributed voltage around the electrodes is visually shown.