参数化船型重构和智能优化及其应用  

Parametric hull type reconstruction and intelligent optimization and their applications

作　　者：梁家健 陈天宇[1,2] 陈京普 LIANG Jiajian;CHEN Tianyu;CHEN Jingpu(China Ship Science Research Center,Wuxi 214082,Jiangsu China;Taihu Lake Laboratory of Deep Sea Technology and Science,Wuxi 214082,Jiangsu China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]深海技术科学太湖实验室,江苏无锡214082

出　　处：《华中科技大学学报（自然科学版）》2024年第10期109-115,129,共8页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点研发计划资助项目(2022YFB4301402)。

摘　　要：利用参数建立某型化学品船几何模型,针对参数、优化方法及计算工况的选取对优化结果的影响进行分析,确定优化方案,开展多航速变吃水的参数化优化.结合各个不同吃水及不同航速下的优化结果,基于RBF(径向基函数)代理模型生成各个吃水、航速下的响应面,进而完成多个航速下、不同吃水目标函数构建,最终采取NSGAII算法开展多目标优化研究.结果表明:基于不同吃水及航速的工况生成的优化数据结果,利用RBF代理模型对开展响应面模型的构建,对各工况下生成的响应面进行误差分析,均方根误差均小于0.2,且决定系数均大于0.9,满足精度要求;提取优化结果,利用代理模型建立响应面,可以对多个航速下,以不同吃水为因变量进行多目标优化.A geometric model of a certain type of chemical tanker was built by parameters,and the impact of the selection of parameters,optimization methods,and calculation conditions on the optimization results was analysed.The optimization plan was determined and parameterized optimization of multi speed and variable draft was carried out.Based on the optimization results of different drafts and speeds,the radial basis function(RBF) proxy model was used to generate response surfaces for each draft and speed,and thereby the construction of objective functions was completed for multiple speeds and different drafts.Finally,the nondominated sorting genetic algorithms-II was adopted for multi-objective optimization research.Results show that based on the optimization data results generated under different drafts and speed conditions,the RBF proxy model is used to construct a response surface model,and error analysis is performed on the response surfaces generated under various conditions.The root mean square error is less than 0.2,and the determination coefficient is greater than 0.9,which could meet the accuracy requirements.Extracting optimization results and using a proxy model to establish a response surface can enable multi-objective optimization with different draft as the dependent variable for multiple speeds.

关 键 词：参数化船型 参数选取 优化方法 响应面 多目标优化 

分 类 号：U663.5[交通运输工程—船舶及航道工程]