u2.05.01 Instructions for use of fracture mechanics operators for the classical approach (non-linear elasticity)

Summary:

This document presents the fracture mechanics operators available in Code_Aster as part of the classical approach. The classical approach is limited to non-linear elasticity. Tips for use are given.

It is advisable to have read the general methodological guide in fracture mechanics, which lists the different approaches available [U2.05.00].

• 1. Generalities
  • 1.1. Linear elastic mechanics of fracture in quasistatics
  • 1.2. Extension to nonlinear elasticity
• 2. Framework for using fracture mechanics functionalities in Code_Aster
  • 2.1. Reminder of the available calculation methods
  • 2.2. Field of validity in general
  • 2.3. Validity of the calculation of G in non-linear
• 3. Implementation of a fracture mechanics study
  • 3.1. Meshing
  • 3.2. Linear elastic calculation
  • 3.3. Nonlinear calculation: Discharge and radiality loss indicators
• 4. Recommendations for use
  • 4.1. Introduction of the theta field
  • 4.2. 3D interpolation methods
  • 4.3. Tips for calculations with POST_K1_K2_K3
  • 4.4. Normalization, symmetries
• 5. Conclusions
• 6. Documentation relating to fracture mechanics
  • 6.1. Reference documents
  • 6.2. User Documents
  • 6.3. Validation test case
• 7. Bibliography