An extended ordinary state-based peridynamics model for ductile fracture analysis

Abstract. The present research establishes a two-step strategy to incorporate classical elastoplastic constitutive model into ordinary state-based peridynamics (OSB-PD) for ductile fracture analysis. Three length levels are notified, respectively, bond level, material particle level and bulk level. unified Bodner-Partom theory is incorporated the OSB-PD framework define bond-wise relationship between deformation state force state. Particle-wise variables indicating plastic extracted from connecting bonds establish damage at indicator in turn exerts effects on following deformation. At study, collaboration among PD theories amplifies theoretical unity of defining behaviors. Simulations under quasi-static impact loading conditions carried out demonstrate effectiveness reproducing fractures