Author(s): Xiao Jin-tao; Xu Yi-gang; Wang Wei-hao; Wang Yan-wu; Wu Gang
Linked Author(s):
Keywords: Icebreaker; Ship-ice interaction; Ice load; Vibration
Abstract: Icebreakers experience significant ice impact load during ice-breaking, which induce hull ice-induced vibration responses. This study takes a specific PC2-class heavy icebreaker as the research object and performs numerical prediction of hull ice-induced vibration responses under typical continuous ice-breaking and impact ice-breaking conditions. First, a ship-ice collision finite element analysis is employed to simulate the interaction process among ship, ice, and water, thereby obtaining the ice impact load on the hull. Subsequently, a time-domain analysis method is applied, considering the relative motion between the hull and seawater, to numerically predict the hull vibration responses under ice impact load. Finally, the vibration response results at typical hull locations are analyzed to characterize the hull vibration response under ice impact load. Under ice impact load, the hull exhibits multi-modal vibration responses, primarily comprising the first and second order vertical bending modes of the hull girder and local vibration modes, with relatively high vibration response levels.
Year: 2026