Uncertainty and reliability System reliability analysis of a ship deck structure for buckling collapse and corrosion limit states

More recently, the ultimate collapse moment of the midship cross-section has been adopted as the measure of structural capacity in the ship hull girder reliability assessment problem (Guedes Soares et al. 1996, Guedes Soares & Teixeira 2000, Hørte et al. 2007). Its implementation in the timevariant reliability assessment problem has been considered using simplified approaches based on buckling knockdown factors applied to the section modulus (Wirsching et al. 1997), semi-empirical design formulations (Kwon & Frangopol 2012, Zayed et al. 2013) and progressive collapse methods (Decò et al. 2011). The later provide the most accurate predictions, although at a significantly larger computational cost.