G/T 500톤급 차도선 추진축계시스템의 비틀림진동 특성과 안전성 평가

다국어 초록 (Multilingual Abstract)

In South Korea, which is surrounded by the sea on three sides, many passenger and car ferries operate around the coasts where there are many islands. Until recently, passenger and car ferries of the 200 gross tonnage (G/T) class were mainly built by small shipbuilding companies. In recent years, with the improvement of the berth facilities of islands, passenger and car ferries of the 500 G/T class have been built and operated to improve economic and operational efficiency. The propulsion shafting system applied to these ships requires a high speed of more than 1500 r/min and more than 1 MW of power for the main engine system, which consists of two engines and two shafts. In South Korea, D company manufactures and supplies high-speed engines of up to 800 kW depending on market demand, but domestic brand engines of greater power are still difficult to obtain. Therefore, main engines are mostly imported and propulsion shafting systems are designed and manufactured according to the sales policies and guides of various domestic dealers. Furthermore, due to the high prices of main engines, ship owners purchase them directly and supply them to shipyards. Consequently, the overall design of propulsion shafting systems considering torsional vibration is not being performed. As a result, accidents related to the main engine and shafting system occur frequently because the torsional vibration characteristics of the engine are not fully examined. This study evaluates the torsional vibration characteristics and safety of three engine models applied to the propulsion shafting system focusing on the recently increasing number of passenger and car ferries of the 500 G/T class.

참고문헌 (Reference)

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