Defining contact properties (Abaqus Dynamic Explicit analyses)

When you define a Surface-to-Surface Contact or Edge to Edge Contact simulation object for an Abaqus Dynamic Explicit or an Axisymmetric Dynamic Explicit analysis, you can create a Contact Property modeling object to define contact properties, interactions, and behaviors of the surfaces that may contact or interact during the analysis, including defining an initial clearance for the first step of the solution. For example, the options in the Contact Property dialog box let you control:

• Contact surface weighting (balanced or pure master-slave).

• The sliding formulation (finite, small, or infinitesimal).

• Initial clearance for the first step of the solution.

• Contact constraint enforcement methods (kinematic or penalty contact).

• A mechanical surface interaction model using the Surface Interaction modeling object. The Surface Interaction modeling object, in turn, can include the Friction and Surface Behavior modeling objects.

Note:

The default contact property model assumes a hard contact in the normal direction, no friction, and no thermal interactions.

Contact properties are assigned at the beginning of the analysis and propagate through all analysis steps in which the contact interaction is active. You can only modify the friction model across steps.

Summary of modeling objects

The following modeling objects work together to define the interactions of Surface-to-Surface Contact and Edge to Edge Contact simulation objects.

Modeling object	Description	Keywords
Contact Property	Manages the properties, interactions, and behaviors of contact pairs.	*CONTACT PAIR
Surface Interaction	Defines a mechanical surface interaction model.	*SURFACE INTERACTION
Friction	Sets friction properties for contact surface interactions.	*FRICTION
Surface Behavior	Defines surface behavior for non-default hard contact.	*SURFACE BEHAVIOR

Associated Abaqus keywords

The options in the Contact Property dialog box correspond to parameters for the Abaqus *CONTACT PAIR, *SURFACE INTERACTION, *SURFACE BEHAVIOR, and *FRICTION keywords. For more information, see the Abaqus Keywords Reference Guide and Mechanical contact properties in the Abaqus Analysis User's Guide.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and displayed partAbaqus as the specified solver Dynamic Explicit or Axisymmetric as the analysis type
Command Finder	Modeling Objects
Location in dialog box	Modeling Objects Manager dialog box→Type list

How do I

Change the value of friction properties in a solution step (Abaqus)

Create multiple contact step controls (Abaqus)

Learn more

Defining contact pairs (Abaqus Structural and Thermal analyses)

Defining contact properties for general contacts (Abaqus)

Modifying friction properties between steps (Abaqus)

Controlling contact steps (Abaqus)

Contact interference (Abaqus)

Automatic face pairing

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Defining contact properties (Abaqus Dynamic Explicit analyses), Simcenter 3D 2021.1 Series

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