Learning Forum

[jfernandez]

Once a cohesive interface has completely debonding, do the resulting surfaces remain configured as contact surfaces? Or is it possible for penetration to occur between the separated surfaces? This question arises in the context of a static structural analysis using a bilinear cohesive zone model.

Thank you in advance for your attention to this matter.

[jfernandez]

 

I have found the answer.

3.7.3.5. Post-Debonding Behavior at the Contact Interface

For the cohesive zone materials with bilinear material behavior (TBOPT = CBDD, CBDE or BILI on the TB command), you can specify that the cohesive zone interface be “healed” if the surfaces come into contact again after debonding.

To activate this option, use the TBFIELD,CYCLE command to define the CZM material as a function of healing cycle number. For more information, see Post-Debonding Behavior of Cohesive Zone Material in the Contact Technology Guide.

 

Thanks