Learning Forum

[qdb15143]

Hi all,

I've been attempting to model a piezoelectric bimporph with the ansys piezoelectrics and mems addon, and everything works fine (static structural, modal) untill i get to the harmonic analysis. At this point im never able to apply voltages to surfaces as this option is greyed out, the only option is Enforced Motion voltage, every time I use this option however my model won't solve for whatever reason (an error occured inside the solver module: general error).

I am new to this so even if you think your solution to be too obvious, please let me know nontheless.

Cheers,

Ben.

[jj77]

I am not familiar with the specific act, but in the end of the day, act ext. run in the background apdl commands.

 

Thus you can put one in your self via the command snippet.

 

Before that, define two named selections of the positive (called positive say) and negative electrodes.

 

Finally apply a voltage boundary condition (via apdl commands) like this (800 harmonic voltage, and zero on negative, so grounded).

 

d,positive,volt,800

d,negative,volt,0

 

There is a video called: ansys cae 16 harmonic response analysis, for more details.

[Jkjkjk]

Problem solved mate?

I am having the same issue.

[Jkjkjk]

it seems that i solved the problem by playing around. As highlighted in the attach image, change the solution method to "Full", and you will be able to use voltage.

btw, i am new to anasys and FEA as well. lots to learn...

 

[Syafiq1986]

.

Hello,

I have problem to get output voltage from ansys workbench.

Currently, I am use piezo n mems extension to set the piezoelectric data.

Unfortunately, I cannot be determine output voltage at static structural and the icon is blanked symbol.

Please refer figure.

Thanks for the feedback.

.