선박용 파이프 루프 곡선부의 구조해석에 관한 연구
A Study on the Structural Analysis of Curved Portions of Pipe Loops Used in Ships
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참고문헌
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초록
Many pipes that are arranged longitudinally in ships have loops at intervals to prevent the failure of the pipes as they absorb large portions of the axial load caused by the bending of the hull girder and/or thermal loads when the pipes are carrying very hot fluids. Since the loops are curved at corners, an efficient method for conducting the structural analyses of these curved portions is required. In this paper, a pipe loop was analyzed by an analytical method and by the finite-element method in four different ways, i.e., based on straight-beam elements, curved-beam elements, 2-D shell elements, and 3-D solid elements. The results of the five analyses were compared to check the validity of the current curved-beam theory. The paper includes some suggestions on how to analyze the pipe loops efficiently.
Abstract
Many pipes that are arranged longitudinally in ships have loops at intervals to prevent the failure of the pipes as they absorb large portions of the axial load caused by the bending of the hull girder and/or thermal loads when the pipes are carrying very hot fluids. Since the loops are curved at corners, an efficient method for conducting the structural analyses of these curved portions is required. In this paper, a pipe loop was analyzed by an analytical method and by the finite-element method in four different ways, i.e., based on straight-beam elements, curved-beam elements, 2-D shell elements, and 3-D solid elements. The results of the five analyses were compared to check the validity of the current curved-beam theory. The paper includes some suggestions on how to analyze the pipe loops efficiently.
참고문헌 (8)
- 박치모, "대형 선박의 파이프 루프 설계식 개발(Ⅱ)", 한국해양공학회지, 23(1), pp.158~163 (2009), 한국해양공학회
- 박치모, "코너부 곡률을 고려한 선박용 파이프 루프 설계식 개발", 한국해양공학회지, 23(4), pp.91~99 (2009), 한국해양공학회
- 박치모, "선박용 파이프 루프의 구조해석을 위한 곡선보 이론의 검토", 2010년도 한국해양과학기술협의회 공동학술대회, pp.2347~2351 (2010), 한국해양과학기술협의회
- 현대중공업, "Arr't of Outfittings on Upper Deck", ~ (2007)
- ABS(American Bureau of Shipping), "Rules for Building and Classing Steel Vessels, Part 4, Chapter 6, Section 2", 389~ (2008)
- JIS (Japanese Industrial Standard), "JIS G 3454-1988; Carbon Steel Pipes for Pressure Service", ~ (1988)
- Lloyd's Register, "Ship Piping Systems, Part 5, Chapter 13, Section 2", 3~4 (2006)
- Pytel, A, "Mechanics of Materials", pp.410~ (2003), Thomson Learning Academic Resource Center