ABSTRACT

The attenuation of the incident wave interacting with a very large floating structure (VLFS) in the presence of vertical barriers is analysed considering small amplitude wave theory. The VLFS is considered to be articulated and is modelled based on Timoshenko-Mindlin plate theory. The eigenfunction expansion method along with the orthogonal mode-coupling relation is employed for the case of finite water depth. The numerical study is performed to analyse the wave reflection, transmission and dissipation characteristics due to the articulated floating plate for the case of bottom standing and surface piercing vertical porous barriers. The hydroelastic behaviour in terms of deflection and strain for an articulated floating thick elastic plate in the presence of porous barriers is analysed. The study reveals that the magnitude of wave attenuation is enhanced due to the presence of vertical porous barriers and also provides an understanding in mitigating the structural response.

摘要

考虑小振幅波理论，分析了存在垂直屏障时入射波与超大型浮动结构（VLFS）相互作用的衰减。VLFS 被认为是铰接的，并基于 Timoshenko-Mindlin 板理论建模。在有限水深的情况下，采用本征函数展开法和正交模式耦合关系。数值研究分析了铰接式浮板在底立式和穿地式垂直多孔屏障情况下的波反射、透射和耗散特性。分析了存在多孔屏障时铰接式浮动厚弹性板在挠度和应变方面的水弹性行为。