Example11 Transient Analysis

General

  • Select “Transient resonant analysis” on the Piezoelectric Analysis tab and perform the analysis.
    See Piezoelectric Analysis tab for reference.
     

  • As a result, the displacement change over the time can be viewed.
     

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

 

Analysis Space

Item

Settings

Analysis Space

3D

Model unit

mm

 

Analysis Conditions

For th transient resonant analysis, setting are required for both the resonant and transient analysis tabs.

Item

Settings

Solvers

Piezoelectric Analysis [Rayleigh]

Analysis Type

Transient resonant analysis

The resonant and transient analysis tabs are set up as follows.

Tab

Setting Item

Settings

Resonant Analysis

Number of modes

10

Approximated frequency

0[Hz]

Transient Analysis

Time Step

Select “Manual”
1×10^-7[s]

Output steps

1

Calculation steps

500

Model

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

0/Solid

piezo

000_P-4 *

* Available from the Material DB

Boundary Conditions

The time dependency of the applied voltage is defined by weight function.

Boundary Condition Name/Topology

Tab

Boundary Condition Type

Settings

earth/Face

Electric

Electric wall

Voltage specified: Voltage 0[V]

hot/Face

Electric

Electric wall

Voltage specified: Voltage 1[V]

Select “Time dependency”.

Define “Weight function”.

fix/Face

Mechanical

Displacement

UX=0.0, UY=0, UZ=0

 

The weight vs. time is plotted below.

Results

To see the time response, click [Results] -> [Display]. Select “Piezo/Time response” at [Solver], “Displacement” at [Field],

and “X component” at [Component] Then, click [Field Graph] at [Show Results] group and set the dialog box as follows.

Select “Horizontal axis: Mode (frequency, time, step, etc)”. See here for creating graph.

See [Field Graph] for more details.