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RISS 인기검색어
- 검색키워드
- 저자 : Seungkyun Yeo (검색결과 2 건)
- 무료
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- 유료
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Concept Design Optimization for Hybrid Wind Turbine Tower Systems
Kyungnam Kim,Seungkyun Yeo,Hyun Chung (사)한국CDE학회 2014 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2014 No.8
Recently, Wind turbine is trying to keep a competitive edge through improved efficiency and magnifying. In order to increase the efficiency of the wind turbine towerm high quality of wind is necessary. So, for taking advantage of such wind, there is a tendency that the height of the tower is increased more and more. However, huge cost will be needed to design the nacelle that suitable to higher tower. Therefore, in this paper, we considered about a method of increasing the height of the wind turbine tower as well as satisfying the original constraints such as vibration and displacement. However, it is impossible to take original design of existing tower because it is already in the optimum design about its height. So It is necessary to design the new tower structure. In this paper, we propose a hybrid tower system that used the concrete basement and perform optimal design using Genetic Algorithm and the experimental design method. Also we compared it with the existing common tower. As a result, we try to present a new design of the tower.
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Ballasting plan optimization for operation of a 2D floating dry dock
Kyungho Yoon,김효진,Seungkyun Yeo,Younghwa Hong,Jihye Cha,정현 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.74 No.4
A floating dry dock is an advanced structure that can provide a solution for dry dock space shortages. The critical point in floating dock operation is compensating the deflection caused by a heavy payload by adjusting the water level in the ballast system. An appropriate ballasting plan warrants safe and precise construction on a floating dock. Particularly, in the case of a 2D floating dock, ballasting plan evaluation is crucial due to complex deformation modes. In this paper, we developed a method to calculate the optimal ballasting plan for accurate and precise construction on a 2D floating dock. The finite element method was used for considering the flexibility of the floating dock as well as the construction blocks. Through a gradient-based optimization algorithm, the optimal ballasting plan for the given load condition was calculated in semi-real time (5 min). The present method was successfully used for the actual construction of an offshore structure on the 2D floating dock.
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