Structural Simulation with CTE: Multiple Solid and Shell Interfaces

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Hello,

<Geometry> I am trying to simulate a geometry which comprises of multiple stacks of rectangular cross section layers composed of 3D solids (~20 to 40 microns) and shells (~2 microns). There are various interfaces in this geometry across its thickness, which connect solid to shell, shell to shell, solid to solid & shell to solid. The width for all entire geometry is 4 mm and length is 20 mm.

<Problem Statement> I am trying to simulating thermal stress and strain between the various layers as per CTE. I have set the fixed constraint for the bottom most layer. I have also used Rigid Motion Suppression on solid and shell domains.

<Issue> While computing the stress, in the results the corner points exhibit exceptionally high concentrations.

Regards,



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