Estimation of top tensions in mooring lines by sensor fusion

Sauder, Thomas; Mainçon, Philippe; Lone, Erling N.; Leira, Bernt J.

doi:10.1016/j.marstruc.2022.103309

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The mean load error is of similar nature and origin as that for the stress ranges, but is likely to be different in magnitude. For instance, if stress ranges and mean loads are taken from measurements, signal drift will directly influence the mean loads but not necessarily the dynamic loads (i.e., stress ranges) (Sauder et al, 2022). We therefore introduce a separate modeling error for the mean loads, and assume that the true mean stress may be expressed as 𝜎 ′ 𝑚 = 𝑄 𝑚 ⋅ 𝜎 𝑚 , where 𝑄 𝑚 is the mean load error and 𝜎 𝑚 is the estimated mean stress.…”

Section: Model Uncertaintiesmentioning

confidence: 99%

Fatigue reliability of mooring chains, including mean load and corrosion effects

Lone¹,

Sauder²,

Larsen³

et al. 2022

Preprint

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A reliability formulation for mooring chain fatigue is developed, including the effects of mean load and degradation due to corrosion. They are included by starting from a S-N model with parameterized dependence to the mean load and a customized corrosion condition scale. The paper includes a thorough case study, based on a realistic case. A global sensitivity analysis is used to justify a reduction of the model dimension. A reliability analysis is then performed, and the effect on failure probability from variation of a range of parameters and model assumptions is studied.

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Section: Model Uncertaintiesmentioning

confidence: 99%