300,000 DWT 원유 운반선의 선체변형을 고려한 추진축계 정렬해석 연구
A study on hull deflections affecting the propulsion shafting alignment of a 300,000 DWT crude oil tanker
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참고문헌
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초록
선체변형이 축계 베어링 손상사고의 한 가지 원인으로 밝혀지면서 선주 및 선급에서는 선체변형을 고려한 보다강화된 축계정렬해석을 요구하고 있다. 또한 관련 기준 및 규정 또한 강화되고 있다. 이러한 이해당사자들의 요구에 부응하기 위하여, 본 연구에서는 300,000 DWT 원유운반선의 흘수 변화에 따른 전선구조해석을 유한요소법을 이용하여 실시하고 전선구조해석으로부터 얻어진 축계의 변위를 이용하여 축계정렬해석을 수행하였다. 전선구조해석은 선박의 흘수변화를 고려한 5가지 조건에서 수행하였다. 이를 바탕으로 실선에 잭-업법을 이용하여 계측을 실시하고 계측결과를 해석결과와 비교하여 축계베어링의 안정성을 검토하였다.
Abstract
Hull deflections are one of the primary causes of shafting bearing damage. Consequently, stakeholders require a comprehensive shafting alignment analysis that takes hull deflections into consideration. Furthermore, prevalent related criteria and rules are being strengthened. In this study, to meet the requirements of stakeholders, global structural analysis was conducted for a 300,000 DWT crude oil tanker by incorporating the finite element method according to the variations in the ship’s draft. Shafting alignment analysis was conducted based on the shafting displacement obtained from the global structural analysis performed for five conditions related to the variations in the ship’s draft. Measurements were then accordingly conducted on the vessel by employing the jack-up method, and the measured results were subsequently compared with the analysis results for reviewing the stability of propulsion shafting bearing.
참고문헌 (16)
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