• If you assign a shell definition to a surface that will be compressed, Creo Simulate associates the shell property with the resulting midsurface.

• A shell definition assigned to a surface will overwrite the calculated shell thickness of the paired model. A shell definition assigned to the red side will overwrite the property assigned to the yellow side of a paired model.

• If you define a shell of variable thickness, be aware that Creo Simulate takes the value of the thickness from the shell, rather than from the actual thickness of the part.