Excluding surfaces from general contacts (Abaqus)

When you define a General Contact simulation object, you can create a Contact Exclusion simulation object to define the pairs of surfaces or self-contacting surface that should not contact or interact during the analysis. Excluding surfaces helps to ensure that there are no unreasonable or impossible contact interactions.

Types of contact exclusions

Three types of contact exclusions are available in the Contact Exclusion dialog box you create a Contact Exclusion simulation object:

Surface Pair Contact Exclusion

Ignores contact between specified surface pairs. For example, to avoid physically unreasonable contact interactions and improve computational performance, exclude parts of the model that are not likely to interact.

Self-Contact Surface Exclusion

Excludes contact between the selected surface and itself.

Surface to Default All-Inclusive Surface Contact Exclusion

Ignores contact between the all-inclusive, automatically generated surface and the selected surface.

Associated Abaqus keywords

The options in the Contact Exclusion dialog box correspond to parameters for the Abaqus *CONTACT EXCLUSIONS and *SURFACE keywords.

For more information, see the Abaqus Keywords Reference Guide and the following topics in the Abaqus Analysis User's Guide:

• Defining general contact interactions in Abaqus/Standard

• Defining general contact interactions in Abaqus/Explicit

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partAbaqus as the specified solver Structural, Axisymmetric Structural, Dynamic Explicit, Coupled Thermal-Structural, and Dynamic Coupled Thermal-Structural as the analysis type
Command Finder	Contact Exclusion
Simulation Navigator	Expand the active solution→right-click Simulation Objects→New Simulation Object→Contact Exclusion

How do I

Define a general contact (Abaqus)

Define contact properties within a general contact (Abaqus)

Define contact exclusions (Abaqus)

Assign contact properties to surfaces (Abaqus)

Learn more

General Contact (Abaqus)

Defining contact properties for general contacts (Abaqus)

Including surfaces in general contacts (Abaqus)

Automatic face pairing

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Related Topics

Examples of defining general contact interactions (Abaqus)

Excluding surfaces from general contacts (Abaqus), Simcenter 3D 2021.1 Series

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