Abstract
The paper deals with new experiments and corresponding numerical simulations to study the effect of stress state on damage and fracture behavior of ductile sheet metals. These stress-state-dependent processes are characterized by different mechanisms acting on the micro-level and, therefore, details of the stress state characterized by stress triaxiality and the Lode parameter in the critical parts of the specimens are of interest. Newly designed H-specimens are studied in a combined numerical-experimental procedure. Strain fields in critical regions of the specimens have been evaluated by digital image correlation (DIC) technique and compared with the results of finite element simulations. Considering different biaxial loading conditions it is possible to cover a wide range of stress triaxialities and Lode parameters in tension, shear and compression domains and consequently the newly proposed H-specimens facilitate a controlled study of damage and fracture at different stress states.
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Financial support from Deutsche Forschungsgemeinschaft (German Research Foundation) though contract number BR1793/19-1. is gratefully acknowledged.
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Gerke, S., Schmidt, M., Dirian, M., Brünig, M. (2018). Damage and Fracture of Ductile Sheet Metals: Experiments and Numerical Simulations with New Biaxial Specimens. In: Altenbach, H., Jablonski, F., Müller, W., Naumenko, K., Schneider, P. (eds) Advances in Mechanics of Materials and Structural Analysis. Advanced Structured Materials, vol 80. Springer, Cham. https://doi.org/10.1007/978-3-319-70563-7_5
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DOI: https://doi.org/10.1007/978-3-319-70563-7_5
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