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 Subsection 8.2.2: Sliding Interfaces Up Section 8.2: Contact Chapter 9: Defining Analysis Steps 

8.2.3 Tied Interfaces

Tied interfaces can be used to tie two non-conforming surfaces together. It is also possible to make the tie temporary or define a tie-breaking criterion. Special versions of tied interfaces are available for biphasic and multiphasic analysis that allow the fluid and solvents to cross the interface.
Tied node-on-facet. Similar to the sliding node-on-facet, but surfaces are not allowed to slide across or break away from each other.
Tied facet-on-facet. Similar to tied node-on-facet but a more accurate surface integration is performed to evaluate the contact forces.
Sticky. Identical to tied node-on-facet but users can define a criterion for tie-breaking.
Periodic boundary. This type of tied interface will allow you to force the displacement between two surfaces to be identical.
Tied biphasic contact. A special tied interface that allows the fluid in a biphasic analysis to flow across the contact interface.
Tied multiphasic contact. A special tied interface that allows the fluid and solvents in a multiphasic analysis to flow across the contact interface.


 Subsection 8.2.2: Sliding Interfaces Up Section 8.2: Contact Chapter 9: Defining Analysis Steps