New biaxial experiments with flat metal specimens for development of damage and failure models

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Current developments in lightweight structural engineering require high demands on used materials. 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, new experiments with flat biaxially loaded metal specimens will be developed to be able to detect different damage and failure mechanisms 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 ductile metals under generalized loading conditions. Main goal of this research project is 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.