Isotropic Continuum Damage Mechanics Models

This lecture covers the objectives of the week, including damage in quasi-brittle materials, representation of damage in continuum damage mechanics models, and an overview of isotropic continuum damage models. It explains stress-strain relationships, damage evolution, and loading-unloading states in continuum damage mechanics models. The lecture also discusses the concept of damage localization, damage parameters, and the formulation of damage models. Various states of loading, unloading, and reloading are presented, along with the graphical view of the model for different loading scenarios. The lecture concludes with remarks on continuum damage mechanics theory, the explicit computation of the damage variable, and references to relevant research in the field.