Learning Forum

[Md_Salem]

I used to do harmonic analysis to free PZT PWAS in APDL in order to get electromechanical impedance spectrum VS frequency , as next sequence:

1- define the element and piezo-material structural parameters , coupled parameters and electric permittivity

2- modeling and meshing the free PWAS

3-select the upper surface nodes

4- create component for the top surface:

CM,TOP,NODE

5- couple the VOLT DOF for the top surface as set '1'

CP,1,VOLT,ALL

6- get node 'N1' on the upper electrode:

*GET,N1,NODE,,NUM,MIN

7- do the same for the lower surface ( BOTTOM,2,N2)

8- apply VOLT loads on the upper and lower surfaces :

D,TOP,VOLT,1

D,BOTTOM,VOLT,0

9- define the frequency range (start - end) and so frequency steps

10 - do the analysis

11- extract the charge on electrode and do external math to convert it to current then impedance and get the spectrum .

the output is 100% experimentally verified.

my question is how to carry out this procedure down from step number 4 for free PWAS ? , and if it is possible to get the impedance calculated directly in workbench 21R2 ?

[Ashish Khemka]

Please see if the following helps:

ANSYS Tutorial for PWAS (sc.edu)

Regards Ashish Khemka

[Md_Salem]

appreciated for your help, but unfortunately the attached video shows the steps that I have already stated for simulation of PZT in APDL. I need to learn how to do it in ANSYS 21R2 WORKBENCH
Regards MD Salem