Displacement Caused by Electrostatic Forceexamples|products|Murata Software Co., Ltd.

Example1 Displacement Caused by Electrostatic Force

General

  • The model is a parallel-plate capacitor. The voltage is applied across the electrodes.
    The electrostatic force between the electrodes causes the deformation.
     

  • The deformation, the displacement and the mechanical stress are solved.
     

  • 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]
Mechanical Stress Analysis [Galileo]

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.