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Implemention of the System-Level Multidisciplinary Design Optimization Using the Process Integration and Design Optimization Framework

PIDO 프레임워크를 이용한 시스템 레벨의 선박 최적설계 구현

  • Park, Jin-Won (Special Purpose Performance Research Center, Daewoo Shipbuilding & Marine Engineering Co., Ltd.)
  • 박진원 (대우조선해양 특수성능연구소)
  • Received : 2020.02.04
  • Accepted : 2020.05.08
  • Published : 2020.05.31

Abstract

The design of large complex mechanical systems, such as automobile, aircraft, and ship, is a kind of Multidisciplinary Design Optimization (MDO) because it requires both experience and expertise in many areas. With the rapid development of technology and the demand to improve human convenience, the complexity of these systems is increasing further. The design of such a complex system requires an integrated system design, i.e., MDO, which can fuse not only domain-specific knowledge but also knowledge, experience, and perspectives in various fields. In the past, the MDO relied heavily on the designer's intuition and experience, making it less efficient in terms of accuracy and time efficiency. Process integration and the design optimization framework mainly support MDO owing to the evolution of IT technology. This paper examined the procedure and methods to implement an efficient MDO with reasonable effort and time using RCE, an open-source PIDO framework. As a benchmarking example, the authors applied the proposed MDO methodology to a bulk carrier's conceptual design synthesis model. The validity of this proposed MDO methodology was determined by visual analysis of the Pareto optimal solutions.

자동차, 항공기, 선박과 같은 대형 복합 기계시스템 설계는 다분야 설계최적화의 영역이다. 다양한 영역의 전문지식과 경험을 동시에 요구하기 때문이다. 최근 급격한 기술발전과 더불어 인간의 편의 증진을 위한 요구로 이들 시스템의 복합도와 복잡도가 점증되고 있다. 이런 복합 시스템의 설계를 위해서는 도메인별 지식뿐만 아니라 다양한 분야의 지식, 경험 그리고 관점을 융합할 수 있는 통합 시스템 설계, 즉 다분야 설계최적화가 필요하다. 과거 다분야 설계최적화는 주로 설계자의 직관과 경험에 의존함으로써 해의 정확도나 시간 효율면에서 효용성이 크게 높지 않았다. 최근 다분야 설계최적화는 정보통신기술(IT)의 발전에 힘입어 프로세스통합 및 설계최적화(PIDO) 프레임워크에 의해 주로 구현된다. 본 논문은 오픈소스 PIDO 프레임워크인 RCE를 이용하여 합리적 수준의 노력과 시간 투입으로 효율적인 다분야 설계최적화를 구현하는 프로세스와 방법론을 찾고자 한다. 벤치마킹 예제로 벌크선 개념설계 모델에 본 논문이 제안한 다분야설계최적화 프로세스와 방법론을 적용해 보았다. 최적설계 결과에 대한 시각적 분석을 통해 제안된 방법론의 타당성을 확인하였다.

Keywords

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