CREEP STRESS INTENSITY FACTOR FOR COMPACT TENSION SPECIMEN CALCULATION WITH TAKING INTO ACCOUNT DAMAGE ACCUMULATION
In this study, a creep damage accumulation model is developed. This model was implemented into finite element program complex ANSYS. Three-dimensional numerical calculations of a compact tension specimen under creep conditions with taking into account damage accumulation are carried out. On the basis of the obtained stress-strain fields, the values of the In-integral are calculated, as well as the distribution of the creep stress intensity factor along the crack front. The possibility of applying the creep stress intensity factor as a fracture resistance characteristic are discussed for creep-damage conditions.