Coupling of single-layer material point peridynamics and finite element method for analyzing the fracture behavior of composite laminates

In this paper a novel method, Single-Layer Material Point (SLMP) Peridynamics is proposed to simulate in-plane problems of composite laminates using a single layer of material points. Assuming that there is no relative displacement between the layers of laminates, the Single-Layer Material Point Peridynamics doesn't need to create multi-layer material points. To further improve the calculation efficiency, a coupling model of single-layer material point Peridynamics and finite element method (FEM) is then developed to simulate the damage initiation and evolution of the composite laminates. Linear elastic deformation problems are studied with the SLMP Peridynamic model and the coupling model respectively, and the results are compared with those of FEM. Damage initiation and evolution problems are also analyzed by the coupling model and the results are compared with those of experiments. It is demonstrated that the presented method is of high accuracy.