Abstract
In this study, high cycle fatigue damage analysis and life prediction of steel structural member based on continuum damage mechanics is proposed. Three-dimensional finite element implementation of a elastoplastic constitutive equation coupled with damage is employed. In case of high cycle fatigue, no plastic strain observable at a mesoscale, thus a two-scale model had already presented by Lemaitre. To apply this theory and obtain reasonable results, two kinds of identification method of damage parameter are considered. The fatigue failures due to the typical stress concentration are simulated, and confirmed the efficiency of this method with appropriate identification technique of damage parameter.
