Split Surface
In Creo Simulate, you can use the Split Surface feature to divide a multicontour surface into individual surfaces or to separate a subset of contours into a new surface. Click > > 
Split Surface to create a Split Surface region feature. You can create a Split Surface region either by manually selecting individual contours or by automatically selecting surface contours.
Split Surface to create a Split Surface region feature. You can create a Split Surface region either by manually selecting individual contours or by automatically selecting surface contours.With Split Surface regions, you can apply loads or constraints to the individual contours of a surface.
In the figure below, the displayed surface has two contours A and B. These contours are split into individual surfaces using the Split Surface feature. In this example a load is applied to the Split Surface region A and a constraint is applied to the Split Surface region B.
Refer to the Part Modeling Help for more information on the Split Surface user interface.