Fully coupled BEM-FEM analysis for ship hydroelasticity in waves |
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| Institution: | 1. Department of Naval Architecture & Ocean Engineering, Seoul National Univ., 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Republic of Korea;2. Systems Engineering Research Division, Korea Institute of Machinery and Materials, 156 Gajeongbuk-Ro, Yuseong-Gu, Daejeon 305-343, Republic of Korea;3. School of Mechanical and Aerospace Engineering, Seoul National Univ., 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Republic of Korea;4. Department of Naval Architecture & Ocean Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Republic of Korea;5. Korea Institute of Ocean Science & Technology, 1312-32, Yuseong-daero, Yuseong-gu, Daejeon 305-343, Republic of Korea;1. School of Naval Architecture and Marine Engineering, National Technical University of Athens, Iroon Polytechniou St. 9, Zografou Campus, 15773 Athens, Greece;2. Department of Mechanics, School of Applied Mathematical and Physical Science, National Technical University of Athens, Iroon Polytechniou St. 9, Zografou Campus, 15773 Athens, Greece;1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, China;2. Collaborative Innovation Centre for Advanced Ship and Deep-Sea Exploration, Shanghai, 200240, China;3. Norwegian University of Science and Technology, Trondheim, Norway;1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, China;2. Collaborative Innovation Centre for Advanced Ship and Deep-Sea Exploration, Shanghai, 200240, China;3. Norwegian University of Science and Technology, Trondheim, Norway;1. University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia;2. Bureau Veritas, Research Department, Paris, France |
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| Abstract: | This paper considers the problem of ship hydroelasticity, which is an important technical issue in the design of ultra-large vessels. For the analysis of fluid-structure interaction problems, a partitioned method is applied. The fluid domain surrounding a flexible body is solved using a B-spline Rankine panel method, and the structural domain is handled with a three-dimensional finite element method. The two distinct methods are fully coupled in the time domain by using an implicit iterative scheme. The numerical results of natural frequency and the motion responses of simple and segmented barges are computed to validate the present method through comparisons with experimental and numerical results. This study extends to the application to two real ships, 6500 TEU and 10,000 TEU containerships, for more validation and also observation on the practicality of the present method. Based on this study, it is found that the present method provides reliable solutions to linear ship hydroelasticity problems. |
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| Keywords: | Ship hydroelasticity Fully coupled analysis Rankine panel method Finite element method Direct time integration |
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