Critical plane based method for multiaxial fatigue analysis of 316 stainless steel

In this work, the fatigue behaviour of 316 stainless steel is studied with different critical plane models. Seven cylindrical samples were used for study, being subjected to complex loading paths, generating combined stresses along axial and transversal sample directions, these being: individual stress, hoop alternating a proportional combination non-proportional L-shaped square-shaped stress. The analysis performed using five models; named Fatemi-Socie, Varvani-Farahani, Gan-Wu-Zhong, Liu I II. models assessed based on their life crack angle prediction capacity. Gan-Wu-Zhong recently proposed model was examined provided acceptable results multiaxial loads tested steel. Nevertheless, Fatemi-Socie produced most accurate in terms cracking orientation II gave best predictions.