Abstract
Model tests were carried out at an ice tank to study the dynamic responses of an off-shore structure interacting with an ice sheet. A specially designed apparatus was used to simulate dynamic characteristics of the structure. Tests were made for a wide range of interaction speed of 4 to 500mm/s. Three modes of structural responses were observed depending on the interaction speed; they are quasi static responses, steady-state vibrations and small response. Discussion is made on the speed and acceleration of the structure under the steady-state vibrations and the transition between the steady-state vibrations and small response.
