Finite element analysis of crack growth from a rectangular notch in mixed mode loading

摘要

The direction of crack growth from rectangular notch for ductile material is determined in this paper. The ductile material is assumed to exhibit the elastic-plastic behaviour. In the model, the crack is assumed to propagate when the J-integral fracture criterion exceeded the critical value during the application of load and the crack tip is propagated to a priori. The direction of crack propagation is characterised by maximum principles stress criterion while the mechanism of crack propagation is simulated by deleted element technique. The model is validated with experimental results, which have shown good agreement.