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Topology Optimization of Offshore Wind-Power Turbine Substructure Using 3D Solid-Element Model

3 차원 고체요소모델을 활용한 해상풍력터빈 하부구조의 위상최적화

  • Kim, Won Cheol (School of Mechanical and Automotive Engineering, Kunsan Nat'l Univ.) ;
  • Chung, Tae Jin (School of Mechanical and Automotive Engineering, Kunsan Nat'l Univ.)
  • 김원철 (군산대학교 기계자동차공학부) ;
  • 정태진 (군산대학교 기계자동차공학부)
  • Received : 2013.05.14
  • Accepted : 2014.01.10
  • Published : 2014.03.01

Abstract

The structural layout of mechanical and civil structures is commonly obtained using conventional methods. For example, the shape of structures such as electric transmission towers and offshore substructures can be generated systematically. However, with rapid advancements in computer graphic technology, advanced structural analyses and optimum design technologies have been implemented. In this study, the structural shape of a jacket substructure for an offshore wind turbine is investigated using a topology optimization technique. The structure is subjected to multiple loads that are intended to simulate the loading conditions during actual operation. The optimization objective function is defined as one that ensures compliance of the structure under the given boundary conditions. Optimization is carried out with constraints on the natural frequency in addition to the volume constraint. The result of a first step model provides quick insights into the optimum layout for the second step structure. Subsequently, a 3D model in the form of the frustum of a quadrilateral pyramid is developed through topology optimization.

Keywords

Concept Design;Multi-loaded Substructure;Structural Shape;Topology Optimization

Acknowledgement

Supported by : 한국에지기술평가원(KETEP), 한국연구재단

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