Research on Hydroelastic Response of an FMRC Hexagon Enclosed Platform

Symmetry

Meng Yang¹  Wei-Qin Liu²  Xue-Min Song²  Guo-Wei Zhang²  Wei-Guo Wu²  Luo-Nan Xiong² 

[1] China Ship Development and Design Center, Wuhan 430064, China;Departments of Naval Architecture, Ocean and Structural Engineering, School of Transportation, Wuhan University of Technology, Wuhan 430063, China;

关键词: hexagon enclosed platform;    FMRC;    hydroelastic;    load;    stress;    frequency-domain;   

DOI  :  10.3390/sym13071110

来源: DOAJ

【 摘 要 】

The numerical hydroelastic method is used to study the structural response of a hexagon enclosed platform (HEP) of flexible module rigid connector (FMRC) structure that can provide life accommodation, ship berthing and marine supply for ships sailing in the deep ocean. Six trapezoidal floating structures constitute the HEP structure so that it is a symmetrical very large floating structure (VLFS). The HEP has the characteristics of large area and small depth, so its hydroelastic response is significant. Therefore, this paper studies the structural responses of a hexagon enclosed platform of FMRC structure in waves by means of a 3D potential-flow hydroelastic method based on modal superposition. Numerical models, including the hydrodynamic model, wet surface model and finite element method (FEM) model, are established, a rigid connection is simulated by many-point-contraction (MPC) and the number of wave cases is determined. The load and structural response of HEP are obtained and analyzed in all wave cases, and frequency-domain hydroelastic calculation and time-domain hydroelastic calculation are carried out. After obtaining a number of response amplitude operators (RAOs) for stress and time-domain stress histories, the mechanism of the HEP structure is compared and analyzed. This study is used to guide engineering design for enclosed-type ocean platforms.

【 授权许可】

Unknown