Objectives
The objectives of this training course are to:
- Describe the different fracture mechanics analysis methods, their fields of application, and their limitations.
- Generate a mesh for a structure containing either a planar defect (crack) or a volumetric defect, using the defect meshing tools available in salome_meca.
- Perform finite element calculations of the characteristic fracture parameters (K, G) in both linear elasticity and elasto-plasticity using code_aster.
- Identify the key points requiring attention to ensure the quality and reliability of the results.
Course Content
- Explanation of the origin and theoretical foundations of fracture mechanics models: the “classical” Linear Elastic Fracture Mechanics (LEFM) approach (K and G parameters), the “classical” non-linear fracture mechanics approach (G, J, Kcp, Js, etc. parameters), and advanced fracture mechanics approaches (Gp, CZM, Beremin model, GTN model, etc.).
- Presentation of the various defect meshing tools available in the salome_meca platform (Bloc Fissure, Zcracks, MORSE, etc.), with a focus on Zcracks and hands-on practice using its functionalities in both 2D and 3D.
- Detailed description of the methods (G-theta method, displacement field extrapolation) and the associated calculation operators (CALC_G, POST_K1_K2_K3) available in code_aster; implementation in 2D and 3D; presentation of operators related to advanced methods.
- Summary of the recommended practices for implementing the different methods and tools when conducting or supervising studies that may be classified as AIP.