Numerical analysis of crack propagation in C(T) specimen of reactor pressure vessel steel using peridynamics

Abstract

Fracture test of SQV2A (ASTM A533B) C(T) specimens were simulated by elastic-plastic ordinary state based peridynamics with work hardening. This research suggests that under high triaxial stress field, the stretching parameter s₀₀ should be varied depending on its triaxiality. For the C(T) specimen, the distribution of triaxiality and s₀₀ keenly affects unloading process with crack propagation.