An improved coupling of 3D state‐based peridynamics with high‐order 1D finite elements to reduce spurious effects at interfaces

Peridynamics (PD) is a nonlocal continuum theory capable of handling fracture mechanisms with ease. However, its use involves high computational costs. On the other hand, Carrera Unified Formulation (CUF) allows one to one-dimensional high-order finite elements, resulting in excellent accuracy while improving efficiency. To address cost solving problems, coupling technique between these two theories necessary. Various approaches have been proposed couple peridynamic grids element meshes literature. most are affected by arbitrary choices blending functions and tuning parameters or exhibit spurious effects at interfaces. overcome issues, we propose simple based on overlapping PD/CUF regions continuity displacement field This approach verified through static analysis classical beams thin-walled structures applications aerospace industry.