d9.05.06 Implementation of the « major landslides with X- FEM » approach

Summary:

This document describes the computational implementation of the « big slips with X- FEM » approach. The aim is to enrich the modeling of structures cracked by the X- FEM by giving it the possibility of taking into account contact at the interface level, under large displacements, but also under the hypothesis of small deformations. The scientific formulation of this approach is presented in the manual [R5.03.53] and is strongly recommended to be read first. In this document, we mainly present the computer routines that contribute to the numerical implementation of this approach (new routines, old routines that have been modified or just old routines that have not been modified but which generally contribute to the modeling X- FEM). We also give the call trees for these routines, a very important tool when starting the development of Code_Aster.

The numerical implementation of this approach in Code_Aster concerns 2D and 3D cases.

• 1. Introduction
• 2. Introduction of cracks
• 3. Enrichment of the model
• 4. Contact assignment
• 5. Link assignment X- FEM
• 6. Calculation of contact contributions
• 7. Updating contact statuses and friction thresholds
• 8. Development prospects