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基于拓扑优化方法的船体支柱布局优化设计
引用本文:朱俊侠,吴嘉蒙,蔡诗剑,于大鹏.基于拓扑优化方法的船体支柱布局优化设计[J].海洋工程,2019,37(4):70-79.
作者姓名:朱俊侠  吴嘉蒙  蔡诗剑  于大鹏
作者单位:中国船舶及海洋工程设计研究院;大连理工大学船舶工程学院
摘    要:船体支柱的布局影响到船舶功能性舱室的布置及相应的结构设计,而目前支柱布局多依赖母型船或者工程师设计经验,缺少基于数学优化的技术支撑。变密度的拓扑优化方法可将属于离散变量优化的支柱布局问题转化为连续变量优化问题。通过悬臂梁—支柱结构的算例,验证了该方法用于解决支柱布局优化问题的可行性。针对某型VLCC的支柱—大跨度甲板结构的支柱布局优化问题,根据布置限制条件设定了支柱优化设计域,选择了两种不同的优化目标函数进行支柱的布局优化设计,最后对优化结果进行了对比分析。结果表明,本方法具有较好的可行性,无需过多设计经验即可优化得到结构性能较好的支柱布局方案,可为此类的支柱布局优化设计提供技术支撑。

关 键 词:拓扑优化  布局优化  支柱  变密度法  船体设计  支撑结构  悬臂梁

Optimal arrangement of ship pillars based on topology optimization method
ZHU Junxi,WU Jiameng,CAI Shijian and YU Dapeng.Optimal arrangement of ship pillars based on topology optimization method[J].Ocean Engineering,2019,37(4):70-79.
Authors:ZHU Junxi  WU Jiameng  CAI Shijian and YU Dapeng
Institution:Marine Design & Research Institute of China, Shanghai 200011, China; School of Naval Architecture & Ocean Engineering, Dalian University of Technology, Dalian 116024, China,Marine Design & Research Institute of China, Shanghai 200011, China,Marine Design & Research Institute of China, Shanghai 200011, China and School of Naval Architecture & Ocean Engineering, Dalian University of Technology, Dalian 116024, China
Abstract:The layout of ship pillars has a direct influence on the general arrangement of the functional cabins and the related structural design. Nowadays the layout is mostly dependent on the design of the parent ship or the design experience of engineers, with lack of mathematical optimization method. The topology optimization based on variable density method can transform the layout problem of pillar which belongs to discrete variable optimization into a continuous variable optimization problem, and the feasibility of this method for solving the optimization problem of pillar layout is verified by an example of cantilever beam-pillar structure. For the problem about optimal arrangement of pillar-long-span deck structure, design domain is set up depending on the design limitations, and two different optimization objective functions are selected. Finally the optimization results are compared and analyzed to show the feasibility of the method. With the implementation of the method, the layout of ship pillars with better structural performance can be designed without much design experience, showing that the method can provide technical support for such issues.
Keywords:topology optimization  optimal arrangement  pillar  variable density method  ship-hull design  supporting structure  cantilever beam
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