Use a Contact Pair node (
) to specify two selections of boundaries that cannot penetrate each other under deformation. The contact pairs define boundaries for parts that can come into contact (boundaries that cannot penetrate each other under deformation). For more information about contact modeling and guidelines for selecting source and destination boundaries for contact pairs, see the Structural Mechanics Module or MEMS Module documentation.
) to specify two selections of boundaries that cannot penetrate each other under deformation. The contact pairs define boundaries for parts that can come into contact (boundaries that cannot penetrate each other under deformation). For more information about contact modeling and guidelines for selecting source and destination boundaries for contact pairs, see the Structural Mechanics Module or MEMS Module documentation.
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Go to Pair Name for information about the Settings window Pair name. Also see Settings and Properties Windows for Features Nodes.
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This section is the described for the Identity Pair except that the default Pair type is Contact pair.
and OFF 
selections.Then define the source or destination boundaries. Select Manual or All boundaries for the boundaries on the source or destination side. If Manual is selected, click in the Graphics window to add boundaries to the Selection section. If required, click the Swap Source and Destination button (
) to swap the source boundaries and the destination boundaries.
) to swap the source boundaries and the destination boundaries.The Search method defaults to Fast—the algorithm only keeps track of source and destination points that have a distance less than a certain search distance. Select Direct for a slower but more robust search.
The Mapping method list is by default set to Deformed configuration. This setting means that whenever the source or destination has moved, a new search for possible contact points is made. If you know that the movements of the source and destination are small, selecting Initial configuration can be more efficient. In this case, a pairing between source and destination points is computed based on the initial configuration and always stays the same. This approach works well if the distance between source and destination is initially smaller than the search distance, and movements in the tangential direction are small.
Select the Manual control of search distance check box to tune the search distance (SI unit: m). By default, the search distance is taken as 0.01 times the diagonal of the geometry’s bounding box. If the Manual control of search distance check box is selected, enter a different value in the Distance field.
You can use the Extrapolation tolerance setting (a fraction of the element length; default 10−4) to effectively extend the source and destination boundaries slightly outside the selections. The size of this extension is equal to the extrapolation tolerance multiplied with the mesh element size.
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