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Modelling Wrinkling of Bilayers in Comsol

Posted Aug 2, 2021, 8:18 a.m. EDT Structural & Acoustics, General, Structural Mechanics 3 Replies

Ali Zeineddine
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Hello,

Is it possible to model wrinkling of polymer/metal bilayer in COMSOL due to the modulus mismatch/ compressive stresses?

3 Replies Last Post Aug 10, 2021, 7:00 a.m. EDT
Henrik Sönnerlind COMSOL Employee

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Posted: 3 years ago Aug 10, 2021, 5:43 a.m. EDT

That depends on the exact modeling strategy you are using. With a Membrane interface, it is currently not possible. If you are using Solid Mechanics, then one approach could be to use a Linear Buckling study to compute for example a critical temperature.

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Henrik Sönnerlind
COMSOL
That depends on the exact modeling strategy you are using. With a Membrane interface, it is currently not possible. If you are using Solid Mechanics, then one approach could be to use a Linear Buckling study to compute for example a critical temperature.
Ali Zeineddine
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Posted: 3 years ago Aug 10, 2021, 6:53 a.m. EDT

Thank you for your reply.

I want to model the compressive residual stresses generated as a result of depositing a metal film on PDMS. One approach I was thinking of is to use the linear buckling study and apply an external stress that would mimic the residual stresses due to the modulus mismatch. Is this viable ?

Thank you for your reply. I want to model the compressive residual stresses generated as a result of depositing a metal film on PDMS. One approach I was thinking of is to use the linear buckling study and apply an external stress that would mimic the residual stresses due to the modulus mismatch. Is this viable ?
Henrik Sönnerlind COMSOL Employee

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Posted: 3 years ago Aug 10, 2021, 7:00 a.m. EDT

That sounds viable, yes.

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Henrik Sönnerlind
COMSOL
That sounds viable, yes.

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