강도를 고려한 고스큐 프로펠러 날개의 형상 설계
Design of Highly Skewed Propeller considering the Blade Strength
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참고문헌
키워드
초록
A strength problem of propeller blades for large container ships at astern condition has been occasionally reported due to the application of a highly skewed propeller which can reduce the hull surface fluctuation forces. A finite element analysis code for propeller blade was developed and utilized since 1985. Recently, however, further fine mesh modeling for finite element analysis is required to yield higher accuracy in the analysis. The present study shows an application of FE analysis code to the highly skewed propeller for large container ships. Results of FE analysis show that the number of FE mesh affects largely on strength, and also the calculated strength with fine mesh gives good agreements to those of other FEM codes. A method to enlarge strength near the trailing edge was introduced considering the strength criterion on the blade.
Abstract
A strength problem of propeller blades for large container ships at astern condition has been occasionally reported due to the application of a highly skewed propeller which can reduce the hull surface fluctuation forces. A finite element analysis code for propeller blade was developed and utilized since 1985. Recently, however, further fine mesh modeling for finite element analysis is required to yield higher accuracy in the analysis. The present study shows an application of FE analysis code to the highly skewed propeller for large container ships. Results of FE analysis show that the number of FE mesh affects largely on strength, and also the calculated strength with fine mesh gives good agreements to those of other FEM codes. A method to enlarge strength near the trailing edge was introduced considering the strength criterion on the blade.
참고문헌 (7)
- Development of Propeller Strength Analysis Code, Research Report of Korea Institute of Machinery & Metals, "Nho, I.S", Korea Institute of Machinery & Metals, ~, pp.UDC829-113 (1985)
- Nho, I.S, "A Fimite Element Dynamic Analysis of Marine Propeller Blades", Proceeding of PRADS'89 (1989)
- 노인식, "프로펠러 날개의 동적 구조해석 시스템 개발", 대한조선학회 논문집, 41(2), pp.114~120 (2004), 대한조선학회
- Lee, C.S, "Analysis of the Structural Failure of Marine Propeller Blades", SOTECH, 6(3), pp.37~45 (2002)
- Yamasaki, S, "Design of Highly Skewed Propeller", PRADS '83 (1983)
- MMG Report, "MMG", MMG, ~, pp.FE Stress Calculation for Propeller Blade-drawing 94-1095-8800-2 (2005)
- Lloyd Register, "Rules and Regulations fo the Classification of Ships" (2004)