基于相对差商法的大型油船中剖面结构优化  

Optimization of large crude oil carrier midship section structure based on the relative difference quotient algorithm

作　　者：郭小东[1] 俞铭华[1] 管义锋[1] 胡嘉骏[2] 朱酥骥[2] 

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]中国船舶科学研究中心,江苏无锡214082

出　　处：《船舶力学》2007年第4期615-621,共7页Journal of Ship Mechanics

摘　　要：基于DNV规范对大型油船中剖面结构进行了优化设计。针对采用DNV规范进行油船结构设计的特点,确定了作为设计变量的构件尺寸与相邻同类构件尺寸之间的关系,进而建立了较为精细的优化模型,以增强优化效果和实用性。优化方法采用相对差商法,并作了若干改进。算例显示优化后纵向构件总重量减轻了5.54%,表明所建的优化模型和改进的相对差商法在大型油船结构优化方面具有良好的有效性。　The weight of midship section structure for large crude oil carrier is minimized based on DNV rules.Aiming at the characters of oil tanker design based on DNV rules,the relations between design variables and other components＇ dimension on the same structures are built,then elaborate optimization model is built,which will increase effect and practicability of the optimization.The relative difference quotient algorithm（RDQA） is introduced and advanced for the optimum design.Results of example show that the value of objective function decreases by 5.54%,indicating good validity of the model and the advanced RDQA for large crude oil carrier structure optimization.

关 键 词：大型油船 中剖面结构 优化模型 相对差商法 

分 类 号：U661.42[交通运输工程—船舶及航道工程]