EPISODE 21:Mechanics of fracture ,Plot curves:crack a-Stress,ratio of KI -a pipe with XFEM in Abaqus

Hi , every one ;
In this video we present basics of mechanics of fractures : Modes of fractures , Griffith's criterion , Irwin Criterion , Stress Intensity Factor K,strain energy release ;
In second part we will plot curves of Crack lenght along stress mises , and ratio of Intesity factor KI to initial intensity fctor KO along ratio of lenght crack to initial crack lenght a0.
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