• When you create an interface between two components or surfaces in a top-level assembly, this interface takes precedence over an interface that is created between the same components or surfaces in a subassembly or a part.

• The surface-surface interface has a precedence over the component-component interface. For example, You have created a free interface between two components. When you create a bonded interface to connect two mated surfaces between these components, the bonded interface takes precedence over free interface.

• When you define a contact interface between two components in a model, Creo Simulate creates interface measures for the component-component Contact. If you want to study a contact between any two surfaces of the same components, you can create a surface-surface contact interface between these surfaces. During the contact analysis, the surface-surface contact takes precedence and Creo Simulate calculates the values of interface measures for the surface-surface Contact.

• The interfaces created using the Interface Definition dialog box takes precedence over the default interface. Creo Simulate uses the default interface to connect any two components in an assembly, if you do not create any interface between them.

• The default interface of the top level assembly takes precedence over the default interface type for the subassembly. For example, you select contact as the default interface for a subassembly and you have selected bonded as the default interface for the top level assembly. All components in the subassembly are connected by bonded interfaces. If you want to connect these components by contact interfaces, you must create contact interfaces between them using the Interface Definition dialog box.