Simulation of ductile tearing during a full size test using a non local Gurson-Tvergaard-Needleman (GTN) model - Archive ouverte HAL
Article Dans Une Revue Engineering Fracture Mechanics Année : 2022

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

Résumé

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

hal-03799362 , version 1 (05-10-2022)

Identifiants

Citer

Youbin Chen, Eric Lorentz, Anna Dahl, Jacques Besson. Simulation of ductile tearing during a full size test using a non local Gurson-Tvergaard-Needleman (GTN) model. Engineering Fracture Mechanics, 2022, 261, pp.108226. ⟨10.1016/j.engfracmech.2021.108226⟩. ⟨hal-03799362⟩
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