Simulation of ductile tearing during a full size test using a non local Gurson–Tvergaard–Needleman (GTN) model

Ductile tearing of a full size precracked pipe is experimentally investigated. In order to model and interpret the test, material characterized using smooth notched tensile bars C(T) specimens. This experimental database used fit parameters non local Gurson–Tvergaard–Needleman (GTN) proposed in Zhang et al. (2018) Chen (2020). The finite element simulations specific elements allowing for control strain/damage localization as well volumetric locking. Mesh independence checked on bars. then able represent early stages crack propagation pipe. particular, observed branching reproduced, whereas this appeared much more difficult obtain GTN model.