The Study On The Loads And Residual Strength Of A Damage Ship

Recently, the design methods on the ultimate load bearing capacity of ship hull structure have been rapidly developed. In the field of ships engineering, the method on the elastic stress-strain relationship has been replaced by the method on the ultimate longitudinal strength of the ship hull step by step. At the present time, engineers pay more and more attention and concern on the ultimate longitudinal strength theory in the hull strength and design field. Now it has become to be a request by the International Marine Organization and the classification societies.On the other hand, a ship in navigation may happen to accidents of grounding or collision. To avoid disastrous consequences such as totally loss of the ship and subsequent pollution to environment, it is necessary to know and assess the residual strength of the damaged ship. So we can take correct technical measure to salvage, rescue and tow the damaged ship. There are only some commence works on the calculation and assessment method for damaged ships at the moment.In this paper, the loads and the residual longitudinal strength of the damage ship is been studied. Firstly, the damage during the architecting and navigating time is categorized. On the foundation of the theory of floatability, the floating parameters of the damage hull is determined. Then the loads of the damage hull are calculated. Moreover, this paper has described the yielding and bulking of the hull girder, the relationship between the ultimate bending moment and the strain of the hull and the method called arc-length which is used in nonlinear FE Analyses. As the...