顶浪、斜浪中复合材料双体艇艇体结构耦合响应数值分析

发布时间：2018-05-17 11:38

本文选题：耦合响应 + 复合材料双体艇　；参考：《舰船科学技术》2016年19期

【摘要】：采用流固耦合(Fluid-Structure Interaction,FSI)的艇体波浪载荷和结构响应的数值分析方法,对顶浪、斜浪中复合材料双体艇结构的动态响应进行研究。分别建立了完整的复合材料艇体有限元模型以及流场模型,基于数值水池造波技术,通过计算获得了顶浪、斜浪中复合材料艇体结构的时域动态响应结果,选取高应力梯度区域,通过网格加密重构同时获得了复合材料的层间应力。选取具有代表性的前10大等效应力与内外面板最值主应力,在将FSI与传统基于经验公式的有限元法(Finite Element Method,FEM)的结果对比中发现,FSI中拱、中垂的计算结果更接近于FEM弯扭组合工况,而采用《钢制双体船直接计算指南》计算复合材料双体艇时,所用经验公式的顶浪航行波浪载荷计算值偏小。
[Abstract]:The dynamic responses of composite catamaran structures in top waves and oblique waves are studied by using the numerical analysis method of the wave loads and structural responses of the ship body of Fluid-Structure interaction FSI (Fluid-Structure interaction FSI). The complete finite element model and flow field model of composite ship body are established respectively. Based on the numerical wave making technique, the dynamic response of composite hull structure in top wave and oblique wave in time domain is obtained by calculation. The interlaminar stress of the composite was obtained by mesh encryption and reconstruction in the high stress gradient region. The top 10 equivalent stresses and the most valuable principal stresses of the inner and outer panels are selected. By comparing the results of FSI with those of the traditional finite element Element method based on empirical formula, it is found that the mid-arch of FSI is more similar to that of FEM bending and torsion combination. However, in the calculation of composite catamaran by means of the Guide to Direct calculation of Steel Catamaran, the calculation value of the wave load of the top wave navigation by the empirical formula is smaller than that used in the calculation of the composite catamaran.
【作者单位】：广东海洋大学工程学院;集美大学轮机工程学院;
【基金】：交通运输部应用基础研究资助项目(2014329815100) 福建省高校产学研重大资助项目(2014H6020) 广东省创新训练资助项目(CXXL2014077)
【分类号】：U661.4

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