Hydroelasticity of ships and studies in coupled antisymmetric vibrations have become increasingly important with container ships becoming faster and more slender. In this investigation, a ship-like structure is modelled and an equivalent backbone with a U-shaped cross section is designed. Their responses are compared, and limitations of various modelling approaches are discussed. It is demonstrated that scaling of the natural frequencies is insufficient to ensure scaling of the antisymmetric mode shapes and the relevant differences are quantified. Consequently, the backbone model should be viewed as a separate structure for validation purposes rather than a scaled model of a ship.

随着集装箱船变得越来越快和越来越细长，船的水弹性和反对称振动耦合研究变得越来越重要。在本研究中，对船状结构进行了建模，并设计了具有U形横截面的等效主干。比较了它们的响应，并讨论了各种建模方法的局限性。已经证明，固有频率的缩放不足以确保反对称模式形状的缩放，并且对相关的差异进行了量化。因此，出于验证目的，应将主干模型视为独立的结构，而不应将其视为船舶的缩放模型。