Peridynamic modeling of nonlocal degrading interfaces in composites

When modeling composite materials at small scales, the consideration of nonlocal effects is fundamental. In addition, overall response matrix-inclusion composites strongly affected by behavior interface between inclusion and matrix. This can be attributed to a possible detachment constituents as well high interface-to-volume ratio especially for nano-sized inclusions. Peridynamics theory that suitable introduce length-scale into continuum description take account interactions. Complex models within peridynamic framework are, however, rarely studied. The objective this work present approach interfaces accounting opening degradation continuum-kinematics-inspired peridynamics (CPD). proposed method employed study in with focus on effect interfaces. our approach, modeled finite thickness interface, i.e. region where subdomains overlap. Within region, are pair-wise connected through bonding forces follow characteristic force-opening law. computational experiments, model captures influence strength size volume fraction response. particular, nonlocality manifests itself “smaller–stiffer” material an increased which highlights importance appropriate model.