Abstract

ABSTRACT The compressive resistance of pillars used in ship structures is studied under a reliability perspective. A particular focus is placed on the study of Square Hollow Section (SHS) welded profiles by examining sample cases and postulating over the practical scantling range of interest. Uncertainty in the material and production imperfections have been probabilistically modelled by considering representative statistical structures. A pre-defined number of non-linear finite element simulations has been performed based on DOE sampling schemes in accordance with the response surface methodology. The generated surrogates were used within a Monte Carlo Simulation (MCS) framework for uncertainty propagation. The obtained statistical structures allowed for the generalised reliability assessment of SHS pillars which further allows for the subsequent proposal of deterministic utilisation factors for practical design.

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