Defining damage modeling for Abaqus cohesive behavior

When you include cohesive behavior in a solution, you can also include damage modeling to simulate the degradation and eventual failure of the bond between two cohesive surfaces. You specify damage behavior as part of the interaction properties for the surfaces. Cohesive surfaces can have only one damage initiation criterion and only one damage evolution law.

• Use the Damage Initiation modeling object to specify parameters to define the initiation of damage. Damage initiation occurs at the beginning of degradation of the cohesive response at a contact point. You can use options in the Damage Initiation dialog box to define the damage initiation criteria, such as the maximum separation or stresses. The options in the Damage Initiation dialog box correspond to the parameters for the *DAMAGE INITIATION keyword.

• Use the Damage Evolution modeling object to specify the material properties that define the evolution of damage. For example, you can define the evolution of damage in terms of the energy required for failure (fracture energy) after the initiation of damage. The options in the Damage Evolution dialog box correspond to the parameters for the *DAMAGE EVOLUTION keyword.

• Use the Damage Stabilization modeling object to specify the viscosity coefficient for the damage model. This coefficient is used in the viscous regularization scheme for the damage model. The options in the Damage Stabilization dialog box correspond to the parameters for the *DAMAGE STABILIZATION keyword (surface-based traction separation behavior).

For more information, see:

• Progressive damage and failure in the Abaqus Analysis User’s Guide.

• *DAMAGE INITIATION, *DAMAGE EVOLUTION, and *DAMAGE STABILIZATION in the Abaqus Keywords Reference Guide.

Defining damage properties for cohesive behavior within a contact pair

You can use the Damage Initiation, Damage Evolution, and Damage Stabilization modeling objects to model damage for surface-based cohesive behavior. In the Contact Pair dialog box, do the following:

1. Select the Include Cohesive Behavior check box in the Contact Pair dialog box to specify the appropriate modeling object.

2. If you want to define the initiation of damage, select the Include Damage Initiation check box. You can then specify the appropriate Damage Initiation modeling object.

3. If you want to define the evolution of damage, select the Include Damage Evolution check box. You can then specify the appropriate Damage Evolution modeling object.

4. If you want to specify the viscosity coefficients for the damage model, select the Include Damage Stabilization check box. You can then specify the appropriate Damage Stabilization modeling object.

Where do I find it?

Application	Pre/Post
Prerequisites	A Simulation file as the work part and the displayed partAbaqus as the specified solverStructural as the specified analysis type
Command Finder	Modeling Objects
Location in dialog box	Type→Damage Initiation, Damage Evolution, or Damage Stabilization

Learn more

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Defining damage modeling for Abaqus cohesive behavior, Simcenter 3D 2021.1 Series

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