Life estimation and comparison of different multiaxial fatigue criteria

Several multiaxial fatigue criteria were applied to predict the fatigue life of a super alloy hollow cylindrical specimen at a strain-controlled multiaxial loading situation and high temperature. After simulation and doing FE analysis, numerical hysteresis loops verified by comparing with reference experimental ones. Life predictions were compared with each other and with experimental lives. The results showed approaches considered simultaneous effect of stress and strain and additional hardening effect, especially at high temperature loading condition could better predict the life. Among them, Fatemi Kurath, Fatemi Socie and then energy criterion had closest predictions to experimental results.