Fatigue life estimation of metal materials based on finite element analysis

The fatigue life of metal materials determines the application performance of metal materials.A fatigue life estimation method of metal materials based on finite element analysis is proposed.The finite element model of metal materials is constructed through the steps of material property setting, mesh generation, etc.The influence mechanism of stress concentration degree, metal material size, and other factors is analysed; the fatigue damage evolution process of metal materials is simulated using a finite element model; the cyclic stress-strain characteristics of metal materials are extracted; the current fatigue damage accumulation state of metal materials is identified; and the estimation results of fatigue life of metal materials are obtained from two aspects of crack formation life and crack growth life.The experimental results show that the estimation error of this method is reduced by about 9.17 h, and the running speed is significantly improved.