基于BP-MOPSO的散货船舱口圆形角隅疲劳强度优化设计  

BP-MOPSO-Based Fatigue Strength Optimization Design of Round Corners for Hatches of Bulk Carriers

作　　者：李鹏[1] 韩晓剑 秦洪德[1] 邓忠超[1] LI Peng;HAN Xiaojian;QIN Hongde;DENG Zhongchao(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001

出　　处：《船舶》2022年第2期36-45,共10页Ship & Boat

基　　金：国家自然科学基金资助项目(51909040);黑龙江省自然科学基金联合引导项目(LH2020E073);山东省重点研发计划项目(2020CXGC010702)。

摘　　要：散货船舱口角隅的疲劳强度问题历来为人们所关注。文章以1艘174000载重吨散货船作为实船算例,在Patran中建立有限元模型,依据CCS《船体结构疲劳强度指南》(2018)对船舯6号舱室舱口角隅的疲劳强度进行评估。基于BP神经网络和MOPSO算法设计了2种优化圆形舱口角隅的方法,子模型法和全局模型法。最后,对比分析2种方法的结果数据,提出了寿命重量比概念来评估各种角隅,分析了圆形角隅的重量对疲劳寿命的影响趋势,得到1组较优的角隅结构形式,供其他设计者参考。The fatigue strength of the hatch corners of bulk carriers has always been a concern.In this paper,a finite element model of a 174000 dwt bulk carrier is established in Patran.The fatigue strength of the hatch corner of the No.6 cabin at midship is evaluated according to the CCS Guidelines for Fatigue Strength of Hull Structures(2018).Two methods for optimizing the round hatch corners,i.e.,the sub-model method and the global-model method,are designed based on the BP neural network and the MOPSO algorithm.Finally,the concept of life-toweight ratio is proposed to evaluate various corners by comparing and analyzing the results of the two methods.A set of better corner structural forms are then obtained by analyzing the influence of the weight of the round corner on the fatigue life.It can provide references for other designers.

关 键 词：船舶结构 舱口角隅 疲劳评估 优化设计 BP-MOPSO 

分 类 号：U661.43[交通运输工程—船舶及航道工程]