Nonlocal smeared rotating crack model with transition to scalar damage - RCSDNL

Virgin material is modeled as isotropic linear elastic material
(described by Young modulus and Poisson
ratio). The onset of cracking begins, when principal stress reaches
tensile strength.
Further behavior is then determined by **exponential** softening law.

The transition to scalar damage model takes place, when the softening stress reaches the specified limit or when the loss of material stability due to negative shear stiffness terms that may arise in the standard RCM formulation, which takes place when the ratio of minimal shear coefficient in stiffness to bulk material shear modulus reaches the limit.

Multiple cracks are allowed. The elastic unloading and reloading is assumed. In compression regime, this model correspond to isotropic linear elastic material. The model description and parameters are summarized in Tab. 22.

2019-03-19