Numerical simulation of crack growth in a welded joint with defects

Research presented in this paper involves the numerical simulation of crack growth a welded joint made common structural steel S235JR2, but with presence number different welding defects, which represents scenario that is not covered by relevant standards, case EN ISO 5817. After analysing several defect combinations, could occur reality, one least favourable combination stress concentration and plastic strain was selected as model. A then introduced location where stresses, caused tensile loading model, were above yield stress. The analysis performed involved combinations load magnitudes length, order to determine at point initial will start propagating.