A mesoscopic approach of ductile damage during cold forming processes

摘要

During cold forming processes, steels are submitted to both ductile damage and strain hardening. These two competing mechanisms determine the mechanical properties of the final product, in particular its fracture resistance and fatigue life. In the present context of constant renewal of products and improvement of their capabilities, it is essential to be able to predict the evolution of the local damage in a component, from its conception and through each transformation stage right up to its final state.