Dear all!

I want to apply the surface coating on an imported shell mesh. For that I have tried two ways:

1. By creating an offset mesh by using the offset mesh tool, in which I am unable to see the effect of the coating applied on the stress results after simulation.

2. By creating a composite layup (as I am using an isotropic material): In this case, I can see the effect of the only composite layer. The effect of shell thickness of the imported shell mesh is not visible in the stress results.

Please let me know any mistakes I am committing in the above steps. Also is there any other way of creating a surface coating to the imported mesh? 

Thanks a lot in advance!

Abaqus ​​​​​​​