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[ABAQUS] Through-wall crack in a pipe

Hi iMechanicians,

Currently modelling pipes, I am trying to calculate J-integral for through-wall crack. I do not use XFEM method since it does not work very well with elastic-plastic materials then I use the classic approach and I must sketch a precise mesh around the crack tip, which is perpendicular to the external (and internal too) surfaceof the pipe.

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Crack growing and fracture criterion

Dear iMechanicians,

 

First I'd like to thank the ones sharing their lecture notes, it's
very helpful for someone who is learning fracture mechanics by himself like I
do. 

Nevertheless, I would have some questions regarding the
energetic aspect of the crack propagation. Please do not hesitate to correct me
if I am wrong. Questions are related to this lecture note, from Professor Suo: node/7507

 

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Highlighting contours with Abaqus (XFEM)

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