영향계수법을 이용한 아라온호의 국부 빙하중 산정 기법에 관한 연구

Abstract

Ice load is one of the most important design factors for icebreaking vessels operating in ice-covered seas. In order to estimate the ice loads acting on ship hull, field measurement of ice pressures and the analysis of recorded data from ice trials are necessary. So far, few methods have been proposed to directly measure the ice loads on ship hull. This thesis focuses on the estimation of local ice loads exerted from ship-ice interaction processes. The Korean IBRV ARAON was used to perform field ice trials during her 2015 Arctic voyage. During ARAON’s general ice transit, recorded data from both strain gauges on the inner hull shell plating and those installed on the transverse frames of the ARAON were analyzed to calculate ice loads. In this thesis, local ice loads estimated from the analysis of shear strain data on the side frames were compared to that from shell plating pressures calculated by using an influence coefficient method. As a result, an alternate method of estimating local ice loads from shear strain measurement is recommended.