三体船新型分布式连接桥结构强度分析

Structural strength analysis of dispersed cross-deck of trimaran

    摘要
  • 摘要:
      目的  减轻连接桥重量是降低三体船重量和重心的重要手段，而结构强度分析是判断减重方案是否可行的前提。
      方法  首先，基于三体船的受力特点，提出一种新的分布式连接桥结构，以去除大部分不必要的面板。然后，采用有限元直接计算法分析新形式连接桥的结构强度，并与传统的整体式连接桥进行对比。
      结果  计算结果表明，相比整体式连接桥结构，分布式连接桥在满足结构强度要求的前提下，使全船结构重量和重心分别降低了6.75%和5.54%。
      结论  采用分布式连接桥可大幅减轻连接桥结构重量，降低三体船的重心和建造成本，为三体船结构设计提供了一种新的思路。

     

    Abstract:
      Objectives   Reducing the weight of the cross-deck is an important method for reducing the weight and center of gravity of a trimaran. Structural strength analysis is used as the premise for judging whether a weight reduction method is feasible.
      Methods  Based on the loading characteristics of a trimaran, a new dispersed cross-deck structure is proposed in which most of the unnecessary panels are removed. The finite element (FE) direct calculation method is adopted to analyze the structural strength of the dispersed cross-deck, and its strength is then compared with that of the traditional integral cross-deck.
      Results  The results show that using the dispersed cross-deck can reduce the structural weight and center of gravity of a trimaran by 6.75% and 5.54% respectively on the premise of meeting the structural strength requirements.
      Conclusions  Using the dispersed cross-deck can greatly reduce the structural weight and vertical location of the center of gravity, which provides new approaches for the structural design of trimarans.

     

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