Coaxial Rotating Crack Model CRCM

The local axis system n — p is always kept aligned with the directions of principal strains, s\, and In this model, the strains en and ep are, respectively,

£1, and e2 at the newly oriented material reference state. Using an implicit definition of the softened shear modulus in cracked elements, the parameter p is defined for the CRCM as follows:

Here, £n and ep is the normal strain components in the directions normal and parallel to the fracture plane, respectively.

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