Rainflow fatigue analysis for loads with multimodal power spectral densities |
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Authors: | Michel Olagnon Zakoua Gud |
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Institution: | aIfremer Centre de Brest, B.P. 70, F-29280 Plouzané, France |
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Abstract: | This paper provides theoretical formulas to calculate conservative estimates of the rainflow fatigue damage from the spectral parameters for spectra composed of the combination of one or several narrow-band low-frequency loads and a higher frequency one, such as are often encountered with moored marine structures. With respect to the semi-empirical formulas that have been proposed by other authors, those presented here are theoretically constructed from the mathematical definition of rainflow and from the statistical properties of Gaussian processes. |
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Keywords: | Fatigue Spectral fatigue Rainflow Random loading |
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