Prognosis of damage and failure of anisotropic ductile metals: experiments, modelling, and numerical simulations

Prof. Michael Brünig, Professor of Structural Mechanics, has successfully acquired the project "Prognose der Schädigung und des Versagens anisotroper duktiler Metalle: Experimente, Modellbildung und numerische Simulationen" (Prognosis of damage and failure of anisotropic ductile metals: experiments, modeling and numerical simulations)  at the DFG.

Duration: 2018 - 2023
Sponsor: DFG research grant

Current developments in lightweight construction are forcing ever higher demands on the materials used, with anisotropic properties playing a major role. Therefore, the question of detailed knowledge about their behavior must arise in order to be able to make a prediction of the safety of components and innovative lightweight structures with the help of efficient calculations. For this reason, systematic investigations with reproducible tests that cover all relevant stress states are essential. For this purpose, experiments are carried out with uniaxially and biaxially stressed metallic test specimens in order to be able to analyze different damage and failure mechanisms depending on the orientation to the rolling direction (anisotropy) for a wide range of stress states up to final failure. With the help of corresponding numerical simulations, a damage and failure model is modified in order to be able to numerically analyze the deformation and failure behavior of anisotropic ductile metals under general static loading conditions. In addition to modeling, the scientific objective is also to define biaxial standard experiments and the associated test specimens, which are used to uncover damage and failure mechanisms for different stress states in the fast and cost-effective safety and service life analysis in structural engineering, aerospace technology and vehicle and shipbuilding can be used