How to disconnect/separate specific elements in Abaqus? 2

[mdama]

Hello
Is there any way to tell Abaqus to disconnect specific elements connectivity when the stress reaches a value or in a specific time? Suppose two parts are tied together but after a while some elements at the interface get disconnected/separated. (like a rupture phenomenon)

Thanks

 

[Mustaine3]

You can use Cohesive Elements or Cohesive Contact to simulate bonds that can fail (based on user defined failure criteria). Search the documentation for "cohesive".

 

[Dave442]

Abaqus provides models for predicting progressive damage and failure.

Typically, you define a damage initiation criterion and evolution law. Once an element loses its load-carrying capacity it is removed from the mesh.

These capabilities are described in detail in the documentation:

Abaqus Analysis Users Guide

Materials​

Progressive damage and failure​

Element deletion can also be controlled using a user subroutine and state variables:

Abaqus Analysis Users Guide

Materials​

Other Material Properties​

User materials​

EDIT: Sorry misread your question. Mustaine's solution is a better approach.

 

[IceBreakerSours]

Throw in a traction separation law whose constants are identified with experimental data (or literature) and you are good to go.

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