CGX巡洋舰多学科设计优化模型的再分析

传统的设计螺旋方法由于割裂了学科间耦合,得到的设计往往是满足设计要求的设计而不是最优的设计.多学科设计优化(MDO)方法正是一种能得到最优设计的新设计方法,MDO目前被广泛应用于复杂工程系统的设计中.文中对多学科设计优化的理论进行了简要综述,在此基础上为了演示MDO方法应用于舰船设计,采用iSIGHT对国外的CGX巡洋舰概念设计的13个模块进行了集成,建立了MDO模型并优化,得到了较好的优化解.在此基础上采用神经网络重新建立了该MDO模型,将优化结果和原MDO模型优化结果进行了比较.

Re-analysis of MDO for CGX example

Multidisciplinary Design Optimization (MDO) can provide the optimal design and is widely applied in the design of complex engineering systems. In this paper, after a brief overview of MDO, as a demonstration of the application of MDO in ship naval design,the modules of the conceptual design of CGX is integrated into iSIGHT and a re-analysis is implemented,after that the approxima-tion model of this MDO problem is established by Neural Network (NN), then an optimization based on this approximation model is executed and compared with the optimization of the original MDO model.