jasonanewcoder/abaqus_skills/xfem

Abaqus XFEM Crack Analysis Skills

Overview

This skill module provides specialized skills for Abaqus Extended Finite Element Method (XFEM) for simulating crack initiation and propagation. XFEM technology allows cracks to propagate through the mesh without requiring the mesh to conform to the crack surface.

Skills List

1. XFEM Crack Analysis (skill_xfem_crack)

Simulate crack initiation and propagation using the Extended Finite Element Method.

Applicable Scenarios:

• Unknown crack initiation location
• Complex crack propagation paths
• Dynamic crack propagation
• Avoid complex crack meshing

Code Snippet:

# Create XFEM crack domain
xfem_region = regionToolset.Region(cells=part.cells)
mdb.models[model_name].XFEMCrack(
    name='Crack-1',
    crackDomain=xfem_region,
    crackLocation=xfem_region,
    allowSelfHealing=OFF
)
# Define damage initiation criteria
material.MaxpsDamageInitiation(
    table=((crack_initiation_stress,),),
    definition=VALUE
)
# Damage evolution
material.maxpsDamageInitiation.DamageEvolution(
    type=ENERGY,
    softening=LINEAR,
    table=((fracture_energy,),)
)

Quick Reference

Damage Initiation Criteria

Damage Evolution Types

• ENERGY (Based on fracture energy)
• DISPLACEMENT (Based on displacement)

Detailed Reference

• Crack Initiation & Propagation — MAXPS/MAXPE/QUADS criteria, energy/displacement-based damage evolution, initial defects, convergence troubleshooting
• VCCT Crack Growth — pre-defined crack paths, energy release rates, B-K mixed-mode criterion, delamination

Related Skills

• General Skills
• Static Analysis