A corrected damage law for high cycle fatigue

It is an effective method to use continuum damagemechanics (CDM) to solve fatigue problems. A corrected damage law for highcycle fatigue is postulated to accord with experimental data based on thelatest Lemaitre damage law. Stress amplitude and mean stress can be takeninto account in this corrected damage law. Take 2A12-T4 aluminum alloy as anexample, the material parameters were gotten for this correction damage model.Let this model be an UMAT subroutine of ABAQUS. Fatigue lives of 14 loadingsituations for two components were computed. The result shows that the meanerror between experimental and computational result is about 15%, whichshows this corrected fatigue damage law can preferably forecast high cyclefatigue life for metallic components.