CAE Software【Femtet】Murata Software Co., Ltd.
Example1 Displacement Caused by Electrostatic Force
General
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The model is a parallel-plate capacitor. The voltage is applied across the electrodes.
The electrostatic force between the electrodes causes the deformation.
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The deformation, the displacement and the mechanical stress are solved.
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Unless specified in the list below, the default conditions will be applied.
Analysis Space
|
Item |
Settings |
|
Analysis Space |
3D |
|
Model unit |
mm |
Analysis Conditions
On the multiphysics setup, select “Electrostatic force to be taken into account”.
|
Item |
Settings |
|
Solver |
Electric Field Analysis [Coulomb] |
|
Analysis Type |
Static analysis |
|
Multiphysics Setup |
Electrostatic force to be taken into account |
|
Options |
N/A |
Ambient air is not required. Deselect the automatic creation.
|
Tab |
Setting Item |
Settings |
|
Mesh Tab |
Ambient Air Creation |
Create ambient air automatically: Deselect |
Model
Body Attributes and Materials
|
Body Number/Type |
Body Attribute Name |
Material Name |
|
0/Solid |
PLATE |
001_Alumina * |
* Available from the Material DB
Boundary Conditions
|
Boundary Condition Name/Topology |
Tab |
Boundary Condition Type |
Settings |
|
E2/Face |
Electric |
Electric wall |
Voltage specified, 1000[V] |
|
E1/Face |
Electric |
Electric wall |
Voltage specified, 0[V] |
Results
The voltage distribution solved by Coulomb is shown below by the isosurface contour diagram.
The vectors of displacement caused by the electrostatic force is shown below.
The electrodes are slightly crushed due to the tensile force.
The magnitude is quite small.