ABSTRACT
The article presents a study on the behaviour and performance of a ship’s hull under repeated extreme loading. A series of finite element analyses is conducted, to showcase the impact of low frequency/high amplitude bending moments on the residual moment carrying capacity of the hull. The effects of buckling and local yielding accumulate with increasing cycle count leading to a global reduction of the structure’s capacity. Loading and material parameters influencing the residual capacity are identified and discussed. The significance of material modelling is investigated through the implementation of different material hardening schemes (perfectly plastic, isotropic, kinematic, combined). Simulations are conducted for the case of a tanker midship section using ABAQUS.
