The stress-life approach is standardized and widely accepted for determining fatigue damage. It was extended to non-isothermal cases by introducing an equivalent temperature approach (ETA). The paper presents its extension, the damage operator approach (DOA), enabling continuous damage calculation for isothermal and non-isothermal loading with mean stress correction. The cycle closure point, equivalent temperature, threshold temperature and rainflow counting are not necessary for the DOA any more. Both approaches are equivalent for the second run of block loading if temperature is constant.
COBISS.SI-ID: 10955291
The strain-life approach is standardized and widely accepted for determining fatigue damage. It was extended to non-isothermal cases by introducing an equivalent temperature approach (ETA). The paper presents its extension, the damage operator approach (DOA), enabling continuous damage calculation for isothermal and non-isothermal loading with mean stress correction. The cycle closure point, equivalent temperature, threshold temperature and rainflow counting are not necessary for the DOA any more. Both approaches are equivalent for the second run of block loading if temperature is constant.
COBISS.SI-ID: 11229467