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Modelling Wrinkling of Bilayers in Comsol

Posted 2 août 2021, 08:18 UTC−4 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 10 août 2021, 07:00 UTC−4
Henrik Sönnerlind COMSOL Employee

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Posted: 3 years ago 10 août 2021, 05:43 UTC−4

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 10 août 2021, 06:53 UTC−4

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 10 août 2021, 07:00 UTC−4

That sounds viable, yes.

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Henrik Sönnerlind
COMSOL
That sounds viable, yes.

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