Creo Simulate > Reference Links > Limitations of Averaging in Results
  
Limitations of Averaging in Results
Creo Simulate can average result quantities across element boundaries, but only where it is a logical extension of the results. Derivative values will not be averaged in the following instances:
If the properties on all sides of an element boundary are not homogeneous. The software does not check the actually properties, but the names of the properties. In other words, even if ShellProp1 and ShellProp2 are identical, Creo Simulate will not average the values across the shells' common edge.
If more than two elements are connected. For example, if there is a beam along the edge of two shells, then the software will not average derivative quantities across that edge.
If there is a discontinuity in the shell edges. That is, two shells must meet at a common line or plane for the quantities to be averaged. This also applies to beams.