Products: ABAQUS/Explicit ABAQUS/CAE
Contact properties:
define the mechanical and thermal surface interaction models that govern the behavior of surfaces when they are in contact; and
are assigned to individual contact pairs.
If nondefault contact properties are desired, you can refer to a contact property definition that governs the interaction of the two surfaces.
Multiple contact pairs can refer to the same contact property definition.
| Input File Usage: | Use both of the following options: |
*CONTACT PAIR, INTERACTION=interaction_property_name surface_1, surface_2 *SURFACE INTERACTION, NAME=interaction_property_name |
| ABAQUS/CAE Usage: | Interaction module: |
Create Interaction Property: Name: interaction_property_name, Contact Interaction editor: Contact interaction property: interaction_property_name |
Figure 29.4.3–1 shows the mesh used in this example. For purposes of this example, a balanced master-slave contact pair is used. The property definition for the contact pair (GRATING) uses a friction model where 
=0.4.
*HEADING … *SURFACE, NAME=ASURF ESETA, *SURFACE, NAME=BSURF ESETB, … *STEP Step1 *DYNAMIC, EXPLICIT … *CONTACT PAIR, INTERACTION=GRATING ASURF, BSURF *SURFACE INTERACTION, NAME=GRATING *FRICTION 0.4
Contact property models are defined as model or history data for a contact pair analysis. You can modify the contact properties from step to step; however, the old contact pair should be deleted and redefined using the new interaction.
For example, the following input could be used to change the friction coefficient used for contact between ASURF and BSURF in the second step of the analysis started in the previous example:
*STEP Step2 *DYNAMIC, EXPLICIT … *CONTACT PAIR, INTERACTION=GRATING,OP=DELETE ASURF, BSURF *SURFACE INTERACTION, NAME=GRATING_NEW *FRICTION 0.5 *CONTACT PAIR, INTERACTION=GRATING_NEW ASURF, BSURF
