Crack Paths 2009

D B E Mand F E Mapproaches, both in the initial configuration and after one step of crack

propagation (even if, in the latter case the maximumcrack advances adopted in F E M

and D B E Msimulations were slightly different). Consequently, also for this case of a

SEN-specimen under torsion loading the functionality of the three codes (BEASY,

C U R V E D C R AanCdKA D A P C R A C K 3aDnd) the validity of the proposed 3D fracture

criteria is confirmed.

Moreover it can be pointed out the higher efficiency of the D B E Mapproach in the

pre-processing phase, due to the inherent method peculiarities

(lower mesh

dimensionality).

Fig. 7b. D B E Mand F E MSIF’s [MPa*mm0.5] along the two initial crack fronts.

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