小水线面双体船波浪载荷水弹性分析

三维水弹性力学将结构分析的有限元方法与围绕柔性体的势流理论结合起来,为在波浪中航行或驻立的复杂结构的运动和内力分析提供了一个流固耦合的统一分析方法,也为小水线面双体船的分析提供了有效的分析工具.文中将水弹性力学方法和谱分析方法相结合,对1 100吨SWATH船进行波浪载荷预报,并将计算结果与水池模型试验数据及国外相关资料进行了对比,说明了水弹性分析方法对于SWATH设计的合理性.

Hydroelastic Analysis of SWATH Ship Wave Loads

The existing 3D hydroelasticity theory provides a unified approach of fluid-structure in-teraction analysis for predicting both the rigid body motions and the structural distortions of a ship travelling in waves.This kind of method is especially useful and effective in the estimation of wave loads of multihull ships, for example a SWATH ship. In this paper, the 3D hydroelastic analysis method is employed together with the spectrum analysis procedure to predict the wave load spectra and the design loads of an 1 100t SWATH ship. The predicted design loads are compared with the model test results, the existing data in literature, and the results calculated with the three classifi-cation society rules.The comparisons illustrate the feasibility of the hydroelastic analysis method in design load assessment of SWATH ships.