ABSTRACT
The polar ships may encounter different ice conditions in polar waters, which may cause hull damage, including plate tearing, frame buckling, and stringer bending. This paper focuses on the dynamical structural response for the polar ships. The information of ice conditions in polar water is studied to distinguish the key factors, which effect the structural response greatly. And three common ice conditions consist of crushed ice, ice ridge and level ice are assumed to simulate the interaction between ship hull and sea ice. Moreover, the case study is carried out with an ice-strengthened vessel based on dynamical non-linear finite element method. The comparison of dynamical structural response is studied considering different ice conditions, and the related hull damage model and strength criteria is presented furtherly. The outcome is a reference for the structural design of ice-strengthened vessels.
