Prediction of ice loads on Korean IBRV ARAON with 6-DOF inertial measurement system during trials of Chukchi and East Siberian Seas. (1st March 2018)

• Record Type: Journal Article
• Authors: Lee, Sang Chul; Park, Sunho; Choi, Kyungsik; Jeong, Seong-Yeob
• Is Part Of: Ocean engineering. Volume 151(2018)
• Page Start: 23
• Page End: 32
• Publication Date: 2018-03-01
• Subjects: Korean IBRV ARAON -- Ice load -- Inertial measurement system method -- Pack ice -- Center of gravity (COG) approach -- Point of impact (POI) approach; Ocean engineering -- Periodicals; Ocean engineering; Periodicals; 620.4162
• DOI: 10.1016/j.oceaneng.2018.01.010
• Languages: English
• ISSNs: 0029-8018

Abstract

Abstract: This paper described a procedure for predicting the ice loads acting on a hull of an icebreaker that employs a six degrees-of-freedom (6-DOF) inertial measurement system method. Ice loads were calculated using the data measured in full-scale ice sea trials of the Korean ice breaking research vessel (IBRV) ARAON during her Arctic Ocean voyage in 2015. In the measured data, it was found that the sway, roll, and yaw motions were larger than other motions because the ship usually met with pack ice during her voyage. To calculate the maximum ice loads, the center of gravity (COG) approach and the point of impact (POI) approach were used. Ice loads ranged from 1.41 to 4.87 MN when estimated using the COG approach, and from 0.11 to 1.06 MN when estimated using the POI approach. The measured ice loads through the COG and POI approaches were compared with the resultant forces measured using strain gauges. Highlights: Procedure to calculate ice load using inertial measurement system is described. Ice loads are calculated with full-scale trial data of Korean IBRV ARAON in 2015. Characteristics of ship motion under ice condition of small pack ices are analyzed. Calculation results are compared with result of strain gauge.