Crack Paths 2009

Figure 5. Shear stress distribution along slip band.

In the beginning, total damage needed for micro-crack nucleation is calculated for

slip bands of every grain, using following equation:

π81G−νWdsb

(2)

T D b =

where TDb represents a total amount of damage that is required for micro-crack

nucleation on a particular slip band (index b), where db is the length of particular slip

band.

Then in each stage partial damage for each segment of each slip band is calculated:

(3)

PDbs=Δτ −2k2

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