Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Manufacture of Architectural Skin-structure with a Double Curved Surface Using Flexible Stretch Forming

가변 스트레치 성형공정을 활용한 건축외피 구조물의 비정형 곡면 제작

  • Park, J.W. (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Y.B. (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, J. (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, K.H. ;
  • Kang, B.S. (Department of Aerospace Engineering, Pusan National University)
  • 박지우 (항공우주공학과, 부산대학교) ;
  • 김유범 (항공우주공학과, 부산대학교) ;
  • 김정 (항공우주공학과, 부산대학교) ;
  • 김광호 (연구소, (주)스틸플라워) ;
  • 강범수 (항공우주공학과, 부산대학교)
  • Received : 2013.03.11
  • Accepted : 2013.05.03
  • Published : 2013.07.01
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Abstract

Flexible stretch forming is an appropriate process for manufacturing of components for aerospace, shipbuilding and architecture structures. Flexible stretch forming has several advantages including that it could be applied to form various shapes such as ones with double curved surfaces. In this study, a systematic numerical simulation was conducted for forming double curved surfaces using flexible stretch forming. The desired surface had a saddle type configuration. It had two radii one of 2500mm and the other of 2000mm along its length and width. In the simulation, the decrease of elastic recovery due to the stretching was confirmed. Experiments were also conducted to confirm the viability of the process. By comparing the simulation to the experiment results, the suitability of flexible stretch forming for double curved surfaces was verified. From the results, the maximum error from desired surface was confirmed at about 1.3mm at the edge of the surface. Hence, it is confirmed that flexible stretch forming has the capability and feasibility to manufacture curved surfaces for architectural skin-structures of buildings.

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References

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