Numerical simulations of biaxial experiments on damage and fracture in sheet metal forming

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Gerke, Steffen^1 ; Schmidt, Marco^1 ; Brünig, Michael^1

Institut für Mechanik und Statik, Universität der Bundeswehr München, Werner-Heisenberg-Weg 39, Neubiberg

85579, Germany^1

关键词: Biaxial experiments;    Continuum damage;    D. digital image correlation (DIC);    Damage and failure;    Deterioration process;    Different mechanisms;    Loading condition;    Specimen geometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032061/pdf
DOI  :  10.1088/1742-6596/734/3/032061

来源: IOP

【 摘 要 】

The damage and failure process of ductile metals is characterized by different mechanisms acting on the micro-scale as well as on the macro-level. These deterioration processes essentially depend on the material type and on the loading conditions. To describe these phenomena in an appropriate way a phenomenological continuum damage and fracture model has been proposed. To detect the effects of stress-state-dependent damage mechanisms, numerical simulations of tests with new biaxial specimen geometries for sheet metals have been performed. The experimental results including digital image correlation (DIC) show good agreement with the corresponding numerical analysis. The presented approach based on both experiments and numerical simulation provides several new aspects in the simulation of sheet metal forming processes.