The effect of the method of determination of Young's modulus on the estimation of fatigue life of structural elements

Cyclic loading of a material entails modifications of its properties. In the paper, the problem of the influence of determination of the elasticity modulus $E$ on calculations of the fatigue life of structural elements was presented. Different values of the modulus of elasticity obtained by different methods were used for modelling of cyclic stress-strain curves and for analysis of local stresses and strains. In the calculations the strain-life and energy-life approach was applied.