Prediction of damage and failure in anisotropic ductile metals: Experiments, modeling and numerical simulations

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Current developments in lightweight structural engineering require high demands on used materials especially with anisotropic properties. Therefore, detailed knowledge of their behavior is necessary to be able to numerically predict the safety of structural components or complex innovative lightweight structures. In this context, systematic investigations with repeatable experiments covering all relevant stress states are necessary. Thus, experiments with flat uni- and biaxially loaded metal specimens will be performed to be able to detect different damage and failure mechanisms depending on orientation to the rolling direction (anisotropy) for a wide range of stress states up to final fracture. With corresponding numerical simulations it will be possible to modify a continuum damage and failure model to numerically analyze the deformation and failure behavior of anisotropic ductile metals under generalized loading conditions. Main goal of this research project is to propose an efficient continuum model and to establish a set of biaxial experiments and corresponding specimens used for detection of failure mechanisms for different stress states in analysis of safety and service life prediction in practical disciplines like structural and aviation engineering or car industry.