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Calibration of GISSMO Model for Fracture Prediction of A Super High Formable Advanced High Strength Steel

Advanced high strength steels (AHSS), due to their significantly higher strength than the conventional high strength steels, are increasingly used in the automotive industry to meet future safety and fuel economy requirements. Material failure that was rarely observed in crash tests a decade ago occurs more frequently in AHSS parts due to the relatively low ductility when compared to conventional steels. In computer aided engineering (CAE) crash analysis, a fracture model is often integrated in the simulations to predict the effects of material failure during crash events. In this paper, parameters of a fracture criterion are generated and calibrated for a Super High Formable (SHF) Steel with a minimum tensile strength of 1180 MPa (1180SHF).