Computational modeling of localized failure in solids: XFEM vs PF-CZM

This work addressesnumerical comparison between the extended finite element method (XFEM) and the phase-field regularized cohesive zone model (PF-CZM) (Wu, 2017, 2018a) for the modeling of cohesive fracture induced localized failure in solids. A novel implementation of the PF-CZM is proposed similarly to the XFEM, in which the added degrees of freedom characterizing the crack behavior are associated only with those nodes within a small...