REDUCING HYDROELASTIC RESPONSE OF VERY LARGE FLOATING STRUCTURE USING FLEXIBLE LINE CONNECTOR AND GILL CELLS
This paper investigates the effects of flexible line connector and gill cells on reducing the hydroelastic response of pontoon-type, very large floating structure (VLFS) under wave action. Gill cells are compartments in VLFS with holes or slits at their bottom surfaces to allow water to enter or leave freely. They are modelled by eliminating the associated hydrostatic buoyancy forces. In the hydroelastic analysis, the water is assumed to be an ideal fluid and its motion is irrotational so that a velocity potential exists. The VLFS is modelled as an isotropic plate according to the Mindlin plate theory. In order to decouple the fluid-structure interaction problem, the modal expansion method is adopted for the hydroelastic analysis which is carried out in the frequency domain. The boundary element method is used to solve the Laplace equation for the velocity potential, whereas the finite element method is employed for solving the equations of motion of the floating plate. It is found that by appropriately positioning the flexible line connector and gill cells, the hydroelastic response and stress resultants of the VLFS can be significantly reduced.
Hydroelasticity very large floating structures flexible line connector gill cells optimization.
CM.Wang R.P.Gaoand C.G.Koh
Department of Civil and Environmental Engineering, National University of Singapore,Kent Ridge, Singapore, 119260
国际会议
The IJSSD Symposium 2012 on Progress in Structural Stability and Dynamics(2012国际结构稳定与动力学进展会议)
南京
英文
101-108
2012-04-14（万方平台首次上网日期，不代表论文的发表时间）