PSI - Issue 60

A.K. Dwivedi et al. / Procedia Structural Integrity 60 (2024) 286–297 A.K.Dwivedi/ Structural Integrity Procedia 00 (2019) 000 – 000

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Fig.1 Semi-infinite crack with explicitly modelled two-scale voids in the process zone. (a) Periodic arrangement of circular (2D) primary voids and the cluster of elliptical secondary voids lying at an angle of 45 0 from the crack plane (b) An elliptical secondary void with the initial aspect ratio = / .

Fig.2:- A typical FE mesh of the modified boundary layer (MBL) model containing only primary voids. (b) Four row of primary voids ahead of crack tip. (c) Close-up view of the local mesh near the crack-tip.