An ordinary state-based peridynamic computational investigation of fiber-reinforced composites

An improved ordinary state-based peridynamic model for fiber-reinforced composite laminate was proposed and applied to fracture analysis in laminated plates with different configurations. The mechanical properties of composite materials are realized by bonds whose orientations lie along the principal axes. The new model works for general fiber orientations with respect to a uniform discretization grid, which is an extension of the state-based peridynamic laminate theory proposed by Madenci and Oterkus. Using the revised model, quantitative quasi-static simulations of laminates under uniaxial tensile loading and compact tensile tests are conducted to validate the elasticity and fracture behavior of laminated materials. The displacement fields and crack propagation are calculated and compared with existing numerical data. The enhanced model is able to represent the fracture characteristics and displacement fields of composite laminates with general fiber orientations, according to the results.