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pzt deformed

Posted Aug 13, 2012, 3:23 p.m. EDT Structural Mechanics Version 4.2a 3 Replies

Arlindo Garcia
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Dear Comsol,

I'd like to calculate the volume formed by pzt to be deformed, when applying a DC voltage.

How can I make this calculation in comsol ?

Thanks
3 Replies Last Post Aug 14, 2012, 4:45 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Aug 14, 2012, 1:19 a.m. EDT
Hi

check your variable list, you have the defomed elementary volume, hence you can integrate that over the domain.

--
Good luck
Ivar
Hi check your variable list, you have the defomed elementary volume, hence you can integrate that over the domain. -- Good luck Ivar
Arlindo Garcia
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Posted: 1 decade ago Aug 14, 2012, 3:39 p.m. EDT

Dear Ivar,

Thanks for your reply.


The variables that are see, u, v, w. Where do I find deformed elementary volume?

I tried the top vol = 1 (1), but the value does not change, when the voltage pzt change.


I have attached the model.

thanks a lot
Dear Ivar, Thanks for your reply. The variables that are see, u, v, w. Where do I find deformed elementary volume? I tried the top vol = 1 (1), but the value does not change, when the voltage pzt change. I have attached the model. thanks a lot
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Aug 14, 2012, 4:45 p.m. EDT
Hi

check if you are integrating over the material or the spatial frame, and if you useor not the non-linear geoemtry, then you shoud see a difference in intop1(1) as then x = X+u

check also the dvol variable, but here again the frames interfer, specially with ALE

Check the doc on the variable names and turn on the equation view to see the COMSOlinternal variables and definitions

there are also several threads on the forum, but take care, the way one can estimate the deformation has changed in the different versions of v4.1, v4.2 v4.3 as COMSOL has changed slightly the default settings for the spatial and material frames in SOLID physics

--
Good luck
Ivar
Hi check if you are integrating over the material or the spatial frame, and if you useor not the non-linear geoemtry, then you shoud see a difference in intop1(1) as then x = X+u check also the dvol variable, but here again the frames interfer, specially with ALE Check the doc on the variable names and turn on the equation view to see the COMSOlinternal variables and definitions there are also several threads on the forum, but take care, the way one can estimate the deformation has changed in the different versions of v4.1, v4.2 v4.3 as COMSOL has changed slightly the default settings for the spatial and material frames in SOLID physics -- Good luck Ivar

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