ABSTRACT
This chapter considers a collision between an ice floe and a tank section of a ship-shaped Floating Production Storage and Offloading in which both the ice and the structure deform and dissipate energy. The relationship between pressure and area is often used to describe various ice-structure interaction processes. Ice structure interactions can be described via a relation between ice pressure and area. The pressure-area curve is limited by the structural capacity and resembles a curve obtained for the case of the rigid ice penetrating the side. In modern vessel design, the assessment of load effects should always be performed under the principle of the Ultimate Limit States and further verified according to the requirements for the Accidental Limit States. One of design challenges is a nearly complete lack of guidelines for analysis of the damage due to abnormal ice actions, specifically what value of the ice pressure to choose for the ice action effects.
