Hydroelastic Responses of Floating Structure by Modeling Dimensions

부유구조물의 모델링 차원에 따른 유탄성 응답

Hong, Sanghyun;Hwang, Woongik;Lee, Jong Seh

  • Received : 2016.05.23
  • Accepted : 2016.06.09
  • Published : 2016.06.30


In this study, FE-BE direct coupling methods of 1D and 2D problems are considered for the pontoon-type floating structure and the difference of the modeling dimensions is investigated for the hydroelastic response. The modeling dimensions are defined as the 1D problem consisting 1D beam-2D fluid coupling and the 2D problem consisting 2D plate-3D fluid coupling with zero-draft assumption. For case studies, hydroelastic responses of the 1D Problem are compared to those of the 2D Problem for a wide range of aspect ratio and regular waves. It is shown that the effects of the elastic behavior are increased by decreasing the incident wavelength, whereas the effects of the rigid behavior are increased by increasing the incident wavelength. In 2D problem, the incident wave angle can be considered, and slightly more accurate results can be obtained, but the computational efficiency is lower. On the other hand, in 1D problem with plate-strip condition, the incident wave angle cannot be considered, but when the aspect ratio is large, the overall responses can be analyzed through a simplified model, and the computational efficiency can be improved.


floating structure;hydroelastic analysis;modeling dimension;euler-bernoulli beam;kirchhoff plate


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Supported by : 국토교통부