Learning Forum

[Mahmoud Nassar]

Hi, 

I'm trying to simulate a PZT using ANSYS mechanical workbench. 

I have downloaded the ACT successfully. Now I am trying to duplicate the results for the “Piezoelectric fan” found in the documentation, but I failed. I am stuck for a long time and I do not know what I am doing wrong?!!!

For Example:

In the modal analysis, the answer is [Mode1 = 60.142 HZ, Mode2 = 349.28 HZ]. For me, I get [Mode1 = 59.949 HZ, Mode2 = 333.12 Hz] 

Further, for the frequency response, I get a completely different plot than the one in the documentation and have no idea why !!!! 

 

Note: I am using ANSYS 2020

 

Any help will be appreciated

[Erik Kostson]

 

Hi

 

THe act extension is not supported and developed longer.

 

Use the coupled field modal and harmonic to analyse Piezoelectric+structure+acoustics (if needed).

For an example see technology demo or showcase TD39: Wire Bonding with Ultrasonic Transducer

All the best

Erik

 

[Mahmoud Nassar]

Thank you for your reply

My goal was to solve the piezoelectric in an FSI problem (FlUENT+ Transient Structure). So, I had first to validate an ANSYS problem (Modal + Harmonic).

To be on the same page, do you mean this video where he is using the ACT (Piezo & Mems):

https://www.youtube.com/watch?v=TuQGOMnDtDI

or am I wrong ?!

Thank you 

[Erik Kostson]

 

 

It is perhaps the same or similar model – but what I refer to is td39 in the help manual (search for that title in the ansys help manual: Wire Bonding with Ultrasonic Transducer) and using the native coupled field system – as we said the act mems is not supported anymore by us.

 

All the best

Erik

 

 

[Mahmoud Nassar]

 

Oh, I see that now

Thank you, that is really helpful.

 

[Mahmoud Nassar]

can we use a Coupled Field Transient (Piezoelectric with transient structure) in system coupling with FLUENT?!!!
I am trying to do that but I keep getting errors, the coupling is not working!! 

 

[Erik Kostson]

 

Hi

It is there and possible to use from 2023 R1.

See the 2023 R1 help manual under the system coupling user guid and section:

Supported Coupling Participants for System Coupling in Workbench

 

All the best

Erik