Fatigue assessment by spectral approach for the ISSC comparative study of the hatch cover bearing pad

摘要: Fatigue analyses were carried out using a spectral approach in the ISSC comparative study of hatch cover-bearing pad (Marine Struct 15 (2001) 1; 14th International Ship & Offshore Structures Congress, Nagasaki, Japan, 2000). The predicted fatigue life was 5.3 years for structural detail. For same detail, predictions classification societies between 2 and 21 In addition, several parameter variations applied present various sea areas, speeds three different models strength. lives varied from 3 to 6 years. results analyses, clear differences observed moderate severe areas. This also indicates that defining environmental conditions ship, i.e., areas occurrence probabilities states, is important addition operational profile ship. are short analysed If true over 20 years, strength or loading underestimate life. methodologies analysis include rather significant uncertainties, especially loading.