CAJ | 학술논문

多学科设计优化（MDO）是解决复杂系统工程问题的有效手段。通过对大型舰艇多学科设计优化船体结构子系统设计方法进行研究，将船体结构设计分为船体横剖面结构布置方案自动生成、船体横剖面结构方案优选、船体结构重量估算3个步骤；根据总体方案提供的主尺度、横剖面外形轮廓和分层分舱等信息，依据骨材（桁材）均匀布置和余量控制的原则，生成船体横剖面结构布置方案，并提出一套参考母型船设计，确定设计船构件尺寸初值的方法；在船体横剖面结构方案优选过程中，采用调用代理模型代替板架有限元仿真模型的方法来减少结构分析的计算时间，并采用组合法获得重量最轻的设计方案。
다학과설계우화（MDO）시해결복잡계통공정문제적유효수단。통과대대형함정다학과설계우화선체결구자계통설계방법진행연구，장선체결구설계분위선체횡부면결구포치방안자동생성、선체횡부면결구방안우선、선체결구중량고산3개보취；근거총체방안제공적주척도、횡부면외형륜곽화분층분창등신식，의거골재（항재）균균포치화여량공제적원칙，생성선체횡부면결구포치방안，병제출일투삼고모형선설계，학정설계선구건척촌초치적방법；재선체횡부면결구방안우선과정중，채용조용대리모형대체판가유한원방진모형적방법래감소결구분석적계산시간，병채용조합법획득중량최경적설계방안。
Multi-disciplinary Design Optimization(MDO)is a valid means to resolve complicated system-atic engineering problems. This paper analyzes the design approach of ship hull structure sub-systems via multi-disciplinary design optimization for large warships. Particularly,the design process is divided into 3 phases:the auto-creation of the midship section layout scheme,the optimization of the obtained scheme, and the total weight estimation of the ship hull structure. Based on the given principal dimension and the section profile,an initial design scheme of the ship hull structure sub-system is generated,with the ar-rangement of frames and girders also being considered. Then,the initial scheme is gradually adjusted in reference to the mother ship. During this process,a surrogate model is employed to improve the optimiza-tion efficiency,and a composite algorithm is applied to reduce the total weight in the scheme.