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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.6
- 수록면
- 191 - 202 (12page)
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초록· 키워드
오류제보하기
Studies on very large offshore structures are increasing owing to the development of deep sea, large-scale energy generation using ocean resources, and so on. The enlargement of offshore structures makes the hydroelastic effect and low natural frequency related responses important. Numerical analyses and model tests for hydroelastic and higher-order springing responses of fixed cylindrical structures are conducted in this study. The panel methods with and without the hydroelastic effect with shell elements, and the Morison analysis method with beam elements are applied. To observe the hydroelastic effect for structural strength, two structures are considered: bottom-fixed cylindrical structures with high and low bending stiffnesses, respectively. The surge motions at the top of the structure and bending stresses on the structure are observed under regular and irregular wave conditions. The regular wave conditions are generated considering the ratios of the cylindrical outer diameter to the wave lengths, and keeping the wave steepness constant. The model tests are performed in the three-dimensional ocean engineering basin in the KRISO (Korea Research Institute of Ships and Ocean Engineering). From the numerical and experimental results, in which the hydroelastic responses are only observed in the case of the structure with a low bending stiffness, it is confirmed that the hydroelastic responses are highly dependent on the structural stiffness. Additionally, the higher-order phenomenon on the specified wave condition is analyzed by observing the higher-order springing responses when the incident wave frequency or its multiples with the high wave height coincides with the natural frequency of the structure.
목차
ABSTRACT
1. Introduction
2. Model Tests
3. Numerical Analysis
4. Conclusion
References
참고문헌 (17)
참고문헌 신청
Andrianov, A.I. (2005). Hydroelasitc Analysis of Very Large Floating Structures (Doctorial Thesis). Delft University of Technology, Delft, Netherlands. Bathe, K.J. (1996). Finite Element Procedure. Prentice Hall. Betts, C.V., Bishop, R.E.D., & Price, W.G. (1977). The Symmetric Generalized Fluid Forces Applied to a Ship in a Seaway. Transactions of the Royal Institution of Naval Architecture, 119, 265–278.
Bishop, R.E.D., & Price, W.G. (1977). The Generalized Antisymmetric Fluid Forces Applied to a Ship in a Seaway. International Shipbuilding Progress, 24(269), 3–14. https://www.doi.org/10.3233/ISP-1977-2426901
Bishop, R.E.D., Price, W.G., & Wu, Y. (1986). A General Linear Hydroelasticity Theory of Floating Structures Moving in a Seaway. Philosophical Transactions of Royal Society, London, A316. https://doi.org/10.1098/rsta.1986.0016
Choi, Y.R., Hong, S.Y., & Choi, H.S. (2000). An Analysis of Secondorder Wave Forces on Floating Bodies by Using a Higher-Order Boundary Element Method. Ocean Engineering, 28(1), 117–138. https://doi.org/10.1016/S0029-8018(99)00064-5
Heller, S.R., & Abramson, H.N. (1959). Hydroelasticity: A New Naval Science. Journal of America Society of Naval Engineers, 71(2), 205–209. https://doi.org/10.1111/j.1559-3584.1959.tb02326.x
Bishop, R.E.D., & Price, W.G. (1977). The Generalized Antisymmetric Fluid Forces Applied to a Ship in a Seaway. International Shipbuilding Progress, 24(269), 3–14. https://www.doi.org/10.3233/ISP-1977-2426901
Bishop, R.E.D., Price, W.G., & Wu, Y. (1986). A General Linear Hydroelasticity Theory of Floating Structures Moving in a Seaway. Philosophical Transactions of Royal Society, London, A316. https://doi.org/10.1098/rsta.1986.0016
Choi, Y.R., Hong, S.Y., & Choi, H.S. (2000). An Analysis of Secondorder Wave Forces on Floating Bodies by Using a Higher-Order Boundary Element Method. Ocean Engineering, 28(1), 117–138. https://doi.org/10.1016/S0029-8018(99)00064-5
Heller, S.R., & Abramson, H.N. (1959). Hydroelasticity: A New Naval Science. Journal of America Society of Naval Engineers, 71(2), 205–209. https://doi.org/10.1111/j.1559-3584.1959.tb02326.x
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