基于改进BESO方法的多工况船体开孔孔形优化  

Shape Optimization of Hull Structure Hole Opening Under Multiple Conditions Based on Improved BESO Method

作　　者：刘昆[1] 郭德松 王仁华[2] 张延昌[1] LIU Kun;GUO Desong;WANG Renhua;ZHANG Yanchang(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China;School of Civil Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003 [2]江苏科技大学土木工程与建筑学院,江苏镇江212003

出　　处：《中国海洋平台》2021年第4期1-8,共8页China offshore Platform

基　　金：国家自然科学基金(编号:51779110,51809122)。

摘　　要：以船体梁腹板开孔为研究对象,考虑船体复杂受力工况,基于含满意度权重因子的折中规划法,对传统双向渐进结构优化(Bidirectional Evolutionary Structural Optimization,BESO)算法进行改进,将体积减轻比作为优化目标,孔边应力作为约束,提出一种适用于船体结构孔型的优化方法。在此基础上,基于ANSYS软件,通过二次开发编写改进BESO算法优化程序,对船体梁腹板的腰圆开孔进行优化设计,得到应力分布均匀且减重明显的开孔型式。优化结果表明,在满足结构强度的条件下,船体梁腹板减重30.01%,达到轻量化的目的。研究成果可为船舶结构设计优化提供参考。Taken the opening of the hull girder web as the research object,considering the complex loading conditions of the hull,based on the compromise planning method with the satisfaction weight factor,the traditional Bidirectional Evolutionary Structural Optimization(BESO)method is improved.Taken volume reduction ratio as the optimization target,with the side stress as a constraint,a method for optimizing the hole shape of the hull structures is proposed.On this basis,based on ANSYS software,through secondary development,an improved BESO optimization program is written to optimize the design of the waist circle opening of the hull girder web,and an opening pattern with uniform stress distribution and obvious weight loss is obtained.The optimization results show that under the condition of satisfying the structural strength,the weight of the hull girder web is reduced by 30.01%,achieving the purpose of light weight.The research results can provide reference for the optimization of ship structure design.

关 键 词：船体梁开孔 改进BESO方法 折中规划法 满意度理论 拓扑优化 

分 类 号：U661.43[交通运输工程—船舶及航道工程]