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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。
Due to the fragmentation of interdisciplinary coupling, the traditional design spiral method often leads to designs that meet the design requirements rather than the optimal design. Multidisciplinary design optimization (MDO) method is a new design method to get the optimal design. MDO is widely used in the design of complex engineering systems. In this paper, a brief review of the theory of multidisciplinary design optimization is presented. Based on this, in order to demonstrate that the MDO method is applied to ship design, iSIGHT integrates 13 modules of the concept design of foreign CGX cruisers, sets up and optimizes the MDO model , Got a better optimization solution. On this basis, the MDO model is re-established by using neural network, and the optimization results are compared with those of the original MDO model.