With the development of ships towards large scale, high speed and light weight, ship hydroelastic
responses and slamming strength issues are becoming increasingly important. In this paper, a time-domain
nonlinear hydroelasticity theory is developed to predict ship motion and load responses in harsh regular waves.
Hydrostatic restoring force, wave excitation force and radiation force are calculated on the instantaneously wetted
body surface to consider the nonlinear effects caused by large amplitude motions of ship in steep waves. A twodimensional
(2D) generalized Wagner model and a one-dimensional (1D) dam-breaking model are used to estimate
the impact loads caused by bow flare slamming and green water on deck, respectively; the impact loads are coupled
with the hydroelastic equation in time-domain. Moreover, segmented model tests are carried out in a towing tank
to investigate the wave and slamming loads acting on the hull sailing in harsh regular head waves and also validate
the numerical results.
JIAO Jialong (焦甲龙), ZHAO Yulin (赵玉麟), CHEN Chaohe (陈超核), LI Xiaochen (李晓晨)
. Slamming and Green Water Loads on Bow-Flare Ship in Regular Head Waves Investigated by Hydroelasticity Theory and Experiment[J]. Journal of Shanghai Jiaotong University(Science), 2019
, 24(5)
: 559
-570
.
DOI: 10.1007/s12204-019-2114-2
[1] BISHOP R E D, PRICEWG. Hydroelasticity of ships [M]. Cambridge, UK: Cambridge University Press,1979.
[2] XIA J Z, WANG Z H, JENSEN J J. Non-linear wave loads and ship responses by a time-domain strip theory [J]. Marine Structures, 1998, 11(3): 101-123.
[3] WU Y S. Hydroelasticity of floating bodies [D]. London,UK: Brunel University, 1984.
[4] LI H. 3-D hydroelasticity analysis method for wave loads of ships [D]. Harbin, China: Harbin Engineering University, 2009 (in Chinese).
[5] CUIW C, YANG J M, WU Y S, et al. Theory of hydroelasticity and its application to very large floating structures [M]. Shanghai, China: Shanghai Jiao Tong University Press, 2007.
[6] SENJANOVI′C I, MALENICA ˇS, TOMAˇSEVI′C S.Hydroelasticity of large container ships [J]. Marine Structures, 2009, 22: 287-314.
[7] DRUMMEN I, HOLTMANN M. Benchmark study of slamming and whipping [J]. Ocean Engineering, 2014,86: 3-10.
[8] KIM J H, KIM Y. Numerical analysis on springing and whipping using fully-coupled FSI models [J]. Ocean Engineering, 2014, 91: 28-50.
[9] OBERHAGEMANN J, EL MOCTAR O. Numerical and experimental investigations of whipping and springing of ship structures [J]. International Journal of Offshore and Polar Engineering, 2012, 22(2): 108-114.
[10] KIM J H, KIM Y, KOROBKIN A. Comparison of fully coupled hydroelastic computation and segmented model test results for slamming and whipping loads [J].International Journal of Naval Architecture and Ocean Engineering, 2014, 6: 1064-1081.
[11] KAPSENBERG G K. Slamming of ships: Where are we now? [J]. Philosophical Transactions of the Royal Society A, 2011, 369: 2892-2919.
[12] KIM J H, KIM Y, YUCK R H, et al. Comparison of slamming and whipping loads by fully coupled hydroelastic analysis and experimental measurement [J].Journal of Fluids and Structures, 2015, 52: 145-165.
[13] REN H L, ZHANG K H, LI H. Research of springing and whipping influence on ultra-large containerships' fatigue analysis [J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(3): 429-437.
[14] International Ship and Offshore Structures Congress (ISSC). Committee I.2 loads [C]//16th International Ship and Offshore Structures Congress. Southampton,UK: ISSC, 2006: 87-173.
[15] YILMAZ O, INCECIK A, HAN J C. Simulation of green water flow on deck using non-linear dam breaking theory [J]. Ocean Engineering, 2003, 30: 601-610.
[16] International Towing Tank Conference (ITTC). The seakeeping committee: Final report and recommendations to the 28th ITTC [C]//Proceedings of the 28th ITTC. Wuxi, China: ITTC, 2017: 233-235.
[17] International Ship and Offshore Structures Congress (ISSC). Committee I.2 loads [C]//20th International Ship and Offshore Structures Congress. Liege, Belgium and Amsterdam, the Netherlands: ISSC, 2018: 111-113.
[18] JIAO J L, CHEN C H, REN H L. A comprehensive study on ship motion and load responses in short-crested irregular waves [J]. International Journal of Naval Architecture and Ocean Engineering, 2019,11(1): 1-16.
[19] SUN H, SUN W. Review on 3D time-domain method for hydrodynamic analysis [J]. China Offshore Platform,2017, 32(6): 1-6 (in Chinese).
[20] SINGH S P, SEN D. A comparative study on 3D wave load and pressure computations for different level of modelling of nonlinearities [J]. Marine Structures,2007, 20: 1-24.
[21] KHABAKHPASHEVA T I, KIM Y, KOROBKIN A A.Generalised Wagner model of water impact by numerical conformal mapping [J]. Applied Ocean Research,2014, 44: 29-38.
[22] HU Z, XUE H X, TANG W Y, et al. A combined wave-dam-breaking model for rogue wave overtopping[J]. Ocean Engineering, 2015, 104: 77-88.
