NON-PROBABILISTIC UNCERTAINTIES AND THEIR EFFECTS ON OPTIMIZATION OF DOCKING BLOCKS

In this paper, non-probabilistic uncertainties in design of docking blocks are discussed. A mathematical model is proposed for optimization of docking blocks with uncertain ship girder loads and combined stiffnesses of docking blocks considered. Emphasis is placed on effects of non-probabilistic uncertainties in ship girder loads and combined stiffnesses of docking blocks on optimal solution. Numerical results show that uncertainties considered affect the optimization of docking blocks and lead to increase in weights of blocks. Increased weights are utilized to increase the resistance of the structure to variation of uncertain variables. The effect of uncertain combined stiffnesses of blocks on design is larger than that of ship girder loads with uncertainty.