A frequency-domain model assessing random loading damage by the strain energy density parameter

The paper presents a new fatigue damage assessment model defined for the strain energy density parameter. is calculations in frequency domain case of narrowband loading. Analytical expressions are derived probability function peaks, level crossing spectrum, and expected that directly linked to power spectral theoretical proof which shows obtained equal stress model. A numerical example used verify correctness proposed frequency-domain estimation formula by comparison with experimental time-domain life results two simulated random time-histories broadband between calculation confirm very good agreement time approaches.