Optimal Design of Deep-Sea Pressure Hulls using CAE tools
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Geometric configurations such as hull shape, wall thickness, stiffener layout, and type of construction materials are the key factors influencing the structural performance of pressure hulls. Traditional theoretical approach provides quick and acceptable solutions for the design of pressure hulls within specific geometric configuration and material. In this paper, alternative approaches that can be used to obtain optimal geometric shape, wall thickness, construction material configuration and stiffener layout of a pressure hull are presented. CAE(Computer Aided Engineering) based design optimization tools are utilized in order to obtain the required structural responses and optimal design parameters. Optimal elliptical meridional profile is determined for a cylindrical pressure hull design using metamodel-based optimization technique implemented in a fully-integrated parametric modeler-CAE platform in ANSYS. While the optimal composite laminate layup and the design of ring stiffener for a thin-walled pressure hull are obtained using gradient-based optimization method in OptiStruct. It is noted that the proposed alternative approaches are potentially effective for pressure hull design.
Abstract
Geometric configurations such as hull shape, wall thickness, stiffener layout, and type of construction materials are the key factors influencing the structural performance of pressure hulls. Traditional theoretical approach provides quick and acceptable solutions for the design of pressure hulls within specific geometric configuration and material. In this paper, alternative approaches that can be used to obtain optimal geometric shape, wall thickness, construction material configuration and stiffener layout of a pressure hull are presented. CAE(Computer Aided Engineering) based design optimization tools are utilized in order to obtain the required structural responses and optimal design parameters. Optimal elliptical meridional profile is determined for a cylindrical pressure hull design using metamodel-based optimization technique implemented in a fully-integrated parametric modeler-CAE platform in ANSYS. While the optimal composite laminate layup and the design of ring stiffener for a thin-walled pressure hull are obtained using gradient-based optimization method in OptiStruct. It is noted that the proposed alternative approaches are potentially effective for pressure hull design.
참고문헌 (19)
- ANSYS Academic Research, "Release 12.1.", ~
- Barski, M., "Optimal Design of Shells Against Buckling under Overall Bending and External Pressure", Thin-Walled Structures, 43, pp.1677~1698 (2005)
- Błachut, J., "Optimal Barreling of Steel Shells Via Simulated Annealing Algorithm", Computers and Structures, 81, pp.1941~1956 (2003)
- Cagdas, I., "Buckling of Cross-Ply Cylinders under Hydrostatic Pressure Considering Pressure Stiffness", Ocean Engineering, 38, pp.559~569 (2011)
- Cai, B., "Reliability-Based Load and Resistance FactorDesign of Composite Pressure Vessel under ExternalHydrostatic Pressure", Composite Structures, 93, pp.2844~2852 (2011)
- Cartie, D., "The Influence of Hydrostatic Pressure onthe Interlaminar Fracture Toughness of Carbon", Epoxy Composites, 2006, 292~300
- 장강원, "Lightweight flatbed trailer design by using topology and thickness optimization", STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, 41, pp.295~307, Springer
- Jasion, P, "Elastic Buckling of Barrelled Shell under External Pressure", Thin- Walled Structures, 45, pp.393~399 (2007)
- 정한구, "Comparative Study of Metallic and Non-metallic Stiffened Plates in Marine Structures", 한국전산구조공학회논문집, 23(6), pp.715~726 (2010), 한국전산구조공학회
- Joung, T.-H., "A Study on the Pressure Vessel Design, Structural Analysis and Pressure Test of a 6000m Depth- Rated Unmanned Underwater Vehicle", Ships and Offshore Structures, 3, pp.205~214 (2008)
- 김민근, "Topology Design Optimization of Heat Conduction Problems using Adjoint Sensitivity Analysis Method", 한국전산구조공학회논문집, 23(6), pp.683~692 (2010), 한국전산구조공학회
- Gabseong Lee, "Shape optimization of mobile phone folder module for structural strength", Journal of Mechanical Science and Technology, 26(2), pp.509~515 (2012), 대한기계학회
- Loeppky, J.L., "Choosing the Sample Size of a Computer Experiment: A Practical Guide", Technometrics, 51, pp.366~376 (2009)
- Moon, C, "Buckling of filament-wound composite cylinders subjected to hydrostatic pressure for underwater vehicle applications", COMPOSITE STRUCTURES, 92(0), pp.2241~2251, ELSEVIER SCI LTD
- Nexcoms Co., Ltd., "Material Property Testing of a Group of CFRP Laminates", ~ (2012)
- OptiStruct, "Altair HyperWorks, Version 11.0", ~
- Simpson, T.W., "Kriging Models for Global Approximation in Simulation-Based Multidisciplinary Design Optimization", AIAA Journal, 39, pp.2233~2241 (2001)
- Young, W.C, "Roark's Formulas for Stress and Strain, Seventh ed" (2002), McGraw-Hill
- Zhou, M., "Topology Optimization for Shell Structures with Linear Buckling Responses, Computational Mechanics", WCCM VI (2004), Tsinghua University Press & Springer Verlag