Hydroelasto-Plastic Response of a Ship Model in Freak Waves: An Experimental and Numerical Investigation

Liu, Weiqin1,2; Mo, Yining2; Xiong, Luonan2; Xu, Haodong2; Song, Xuemin1,2; Li, Ye3

2024-09-01

10.3390/jmse12091555

JOURNAL OF MARINE SCIENCE AND ENGINEERING   影响因子和分区

2077-1312

Freak waves have caused numerous accidents resulting in the collapse of ship structures due to structural plasticity, buckling, and instability, leading to the loss of life and property. Consequently, there is a growing academic interest in understanding ship structural collapsed responses induced by freak waves. This paper presents both numerical and experimental investigations on the structural collapse response of a ship model caused by freak waves. The study uses the Peregrine breather solution theory based on the Nonlinear Schr & ouml;dinger (NLS) equation to generate a theoretical freak wave, and the nonlinear time-domain wave elevation and velocity field are obtained. The theoretical history of wave elevation is transferred into the wave maker of the wave tank to create experimental freak waves, and the velocity field of the freak wave is defined in a Computational Fluid Dynamics (CFD) solver to generate 3D numerical freak waves. A similar hydroelasto-plastic model is designed, and a hydroelasto-plastic experiment is conducted to observe experimental freak waves and large rotational deformations. The theoretical velocity field from the Peregrine breather solution theory, based on the NLS equation, is defined in a CFD platform to generate 3D numerical freak waves. A two-way Fluid-Structure Interaction (FSI) numerical hydroelasto-plastic approach coupling of CFD with a nonlinear Finite Element Method (FEM) solver is applied. Co-simulation of wave pressures and the structural collapsed response of the ship model caused by freak waves is performed. The wave elevation of experimental and numerical freak waves and the large rotational deformation of the buckling hinge are analyzed and compared, revealing a good agreement between the experiment and calculation. The maximum simulation rotational angle is 38.9 degrees, while the maximum experimental rotational angle is equal to 42.3 degrees for a typical wave case H2, which means numerical model accuracy and performance are acceptable for the simulating hydroelasto-plastic problem. The findings demonstrate that the numerical approach proposed in this study can effectively solve the hydroelasto-plastic response of ship structures in freak waves, offering a valuable tool for evaluating ship strength in these conditions and guiding future ship structural design.

hydroelasto-plastic freak wave experiment computational fluid dynamics nonlinear finite element method rotation

SCI

英语

通讯

National Key Research and Development Project[2022YFC3006001] ; Wuhan Science and Technology Plan Project[2023010402010602] ; National Natural Science Foundation of China["52071243","52101371"]

Engineering ; Oceanography

Engineering, Marine ; Engineering, Ocean ; Oceanography

WOS:001323473900001

MDPI

Web of Science

1.Wuhan Univ Technol, Key Lab High Performance Ship Technol, Minist Educ, Wuhan 430063, Peoples R China
2.Wuhan Univ Technol, Sch Naval Architecture Ocean & Energy Power Engn, Dept Ocean Engn, Wuhan 430063, Peoples R China
3.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China

Liu, Weiqin,Mo, Yining,Xiong, Luonan,et al. Hydroelasto-Plastic Response of a Ship Model in Freak Waves: An Experimental and Numerical Investigation[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2024,12(9).

Liu, Weiqin,Mo, Yining,Xiong, Luonan,Xu, Haodong,Song, Xuemin,&Li, Ye.(2024).Hydroelasto-Plastic Response of a Ship Model in Freak Waves: An Experimental and Numerical Investigation.JOURNAL OF MARINE SCIENCE AND ENGINEERING,12(9).

Liu, Weiqin,et al."Hydroelasto-Plastic Response of a Ship Model in Freak Waves: An Experimental and Numerical Investigation".JOURNAL OF MARINE SCIENCE AND ENGINEERING 12.9(2024).