Ship in Compressive Ice: Preliminary Model Test Results and Analysis of theProcess. Report from the Joint Finnish-Soviet Research Project

摘要

Results and preliminary analysis of model tests conducted to study a ship incompressive ice are presented in the paper. The tests are carried out in the HUT ice model basin. The total number of tests is 54 with two ice thicknesses and including tests in level ice, channel, compressive level ice and compressive channel. Towing force, speed and maximum compressive force against portside are recorded. The resistance in the compressive channel can be twice as large as resistance in level ice at slow speeds. The compressive force measured is decreasing exponentially as a function of the increasing model speed. A theoretical model is developed to study the propagation of a bending crack in compressive ice field. Finally the scaling laws for model testing of a ship in compressive ice is slightly touched upon.