한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제22권6호
  • /
  • Pages.75-82
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  • 2008
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  • 1225-0767(pISSN)
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  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

다점 프레스를 이용한 곡면 성형의 가공 정보 산출을 위한 IDA방법

Application of IDA Method for Hull Plate Forming by Multi-Point Press Forming

  • 윤종성 (인하대학교 대학원 선박공학과) ;
  • 이장현 (인하대학교 기계공학부 선박해양공학) ;
  • 유철호 (인하대학교 대학원 선박공학과) ;
  • 황세윤 (인하대학교 대학원 선박공학과) ;
  • 이황범 (인하대학교 대학원 선박공학과)
  • 발행 : 2008.12.31
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초록

Flame bending has been extensively used in the shipbuilding industry for hull plate forming In flame bending it is difficult to obtain the desired shape because the residual deformation dependson the complex temperature distribution and the thermal plastic strain. Mechanical bending such as reconfigurable press forming multi-point press forming or die-less forming has been found to improve the automation of hull plateforming because it can more accurately control the desired shape than line heating. Multi-point forming is a process in which external forces are used to form metal work-pieces. Therefore it can be a flexible and efficient forming technique. This paper presents an optimal approach to determining the press-stroke for multi-point press forming of curved shapes. An integrated configuration of Finite element analysis (FEA) and spring-back compensation algorithm is developed to calculate the strokes of the multi-point press. Not only spring-back is modeled by elastic plastic shell elements but also an iterative algorithm to compensate the spring-back is applied to adjust the amount of pressing stroke. An iterative displacement adjustment (IDA) method is applied by integration of the FEA procedure and the spring-back compensation work. Shape deviation between the desired surface and deform￡d plate is minimized by the IDA algorithm.

키워드

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