Fatigue Reliability Analysis Model for Structural Members under Random Stress-Time Courses

A model for fatigue reliability analysis of structural members under random stress-time courses is proposed. Two kinds of random stresses are taken into consideration. The fatigue reliability of the members under constant amplitude stresses are analyzed based on thep-S-Ncurve of material and the random factors affecting fatigue strength to obtain thep-S-Ncurve of the members. Then the fatigue reliability of the members under random stress-time courses is calculated by using Miner s rule and thep-S-Ncurve of the members.