r7.01.33 Elasto-plasticity-damage coupling

Summary:

This document presents a method for coupling an elasto-plastic model with a damage model, which is implemented as part of KIT_DDI. The method uses an approach of partitioning the model into three modules: elasto-plasticity, damage, and coupler. It is in particular this modularity that represents the main advantage of the method. It makes it possible to use the same « coupler » module for couplings between different elasto-plasticity and damage models without intervening in the implantation of these models. Exactly the same idea is used for mechanical/creep couplings (see [R7.01.19]).

For the moment, the implantation allows to couple only the model GLRC_DM for damage with the models VMIS_ (ISOT/CINE) _ LINE for elasto-plasticity and this only for models DKTG.

• 1. Introduction
• 2. Models of elasto-plasticity-damage in general
  • 2.1. Challenges and difficulties
  • 2.2. Thermodynamic framework
  • 2.3. Digital integration
  • 2.4. Coupler limitations
• 3. Specific models
  • 3.1. Global models
• 4. Bibliography
• 5. Document version history