Abstract
In order to understand the influence of stress triaxiality on plastic deformation and damage evolution behavior, notch-free plate specimen and pre-notched plate specimen were conducted by tensile test and finite element simulation. Notch-free specimen was used to calibrate the ductile damage model of 316L austenite steel. Combined with the tensile constitutive model and the ductile damage model, the effects of stress triaxiality on plastic deformation and damage evolution of specimens were studied. It is found that, with notch radius decreasing, the equivalent plastic strain at the notch root is more concentrated, and the damage is easier to initiate.
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