A novel phase‐field based cohesive zone model for modeling interfacial failure in composites

The interface plays a critical role in the mechanical properties of composites. In present work, novel phase-field based cohesive zone model (CZM) is proposed for cracking simulation. competition and interaction between bulk interfacial are taken into consideration directly both displacement- phase-field. A family modified degradation functions utilized to describe traction-separation law CZM. Finite element implementation CZM was carried out with completely staggered algorithm. Several numerical examples, including single bar tension test, double cantilever beam three-point bending single-fiber reinforced composite verify by comparison existing experimental results. shows its advantage on modeling cracking.