Benefits: When modeling fracture mechanics with the extended finite element method (XFEM) in Abaqus/CAE, you can now study stationary cracks in addition to growing cracks, specify a value for the enrichment radius, and specify a viscosity coefficient. These enhancements increase the coverage of Abaqus analysis product functionality.
Description: The following functionality for modeling fracture mechanics with XFEM is now supported in Abaqus/CAE:
When you are defining the material, you can specify a viscosity coefficient to introduce localized damping using the viscous regularization technique, which assists convergence as the material fails.
Previous releases of Abaqus/CAE allowed you to study cracks that grew arbitrarily through your model. You can now choose to study stationary cracks in addition to growing cracks.
The enrichment radius is a small radius from the crack tip within which the elements will be used for calculating crack singularity for a stationary crack. You can now specify the value of the enrichment radius, whereas previous releases of Abaqus/CAE assumed the default value for the enrichment radius (three times the typical element characteristic length in the enriched area).
Property module: Material editor: MechanicalDamage for Traction Separation Laws: select damage initiation criterion: SuboptionsDamage Stabilization Cohesive: specify viscosity coefficient Interaction module: Crack editor: Allow crack growth and Enrichment radius: Specify