Author(s): Tae-Wook Kim; Kyung-Sik Choi; Sung-Chan Kim; Tak-Kee Lee
Linked Author(s):
Keywords: Icebreaking performance test; Local ice pressure; Relationship between local ice pressure and contact area; Amundsen Sea; Influence coefficient method; Direct method
Abstract: This study deals with the data obtained from two icebreaking performance tests in 2012 for the icebreaking research vessel (IBRV) ARAON in the Amundsen Sea. The first icebreaking performance test was carried out against a big ice floe with the size of 900m x 600m. The ice floe was 0.74 to 1.97 meters thick. The second test was performed against a big ice floe with the size of 1,100m x 600m. The ice floe was 1.06 to 5.03 meters thick. In order to measure the local ice load acting on the hull, 21 strain gauges were attached inside of the side shell plating of port and starboard sides in the bow thruster room. For the estimation of local ice pressure, the peak data higher than 20MPa were selected and an influence coefficient method and a direct method were applied. The difference and correlationship between the local ice pressures calculated by two methods was investigated graphically with discussion. Finally, the calculated local ice pressures were marked in an existing ice pressure–contact area curve.
Year: 2014