A Modified DF2016 Criterion for the Fracture Modeling from Shear to Equibiaxial Tension
Xiaona Xu,
Ruqiang Yan,
Xucheng Fang
Abstract:This study introduces a modified DF2016 criterion to model a ductile fracture of sheet metals from shear to equibiaxial tension. The DF2016 criterion is modified so that a material constant is equal to the fracture strain at equibiaxial tension, which can be easily measured by the bulging experiments. To evaluate the performance of the modified DF2016 criterion, experiments are conducted for QP980 with five different specimens with stress states from shear to equibiaxial tension. The plasticity of the steel is… Show more
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