Creo Simulate > Modeling Structure and Thermal Problems > Properties > Shell Properties > Guidelines for Using Shell Properties
  
Guidelines for Using Shell Properties
The following are guidelines for using shell properties:
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.
Return to About Shell Properties.